Energy Audit Report Khar Gymkhana - cBalancecbalance.in/.../10/...Report_22Sept2014_v0.5_FINAL.pdf · Energy Audit Report Khar Gymkhana ... Refrigerator and Chiller Systems ... Table

Energy Audit Report

Khar Gymkhana

September 05, 2014 Prepared by: Vivek Gilani, Ashoka Fellow Environmental Engineer (E.I.T) BEE Certified Energy Auditor (EA-17177) Co-Founder: The no2co2 Project (www.no2co2.in) Co-Founder / Member Secretary: The GreenSignal Ecolabelling Body Founder / Director: cBalance Solutions Hub

In consultation with: Mr. Pradeep Thakur, Partner, M/s. Vision Power Factx B.E Electrical BEE Certified Energy Auditor (EA-5872)

Khar Gymkhana Energy Audit Report – August 2014 Page 2

Table of Contents 1 Introduction ................................................................................................................ 6

2 Project Scope .............................................................................................................. 7

3 Methodology ............................................................................................................... 7

4 Energy Audit Data Analysis ....................................................................................... 10

4.1 Baseline Performance Measurement ................................................................ 10

4.1.1 Electricity Consumption .............................................................................. 10

4.1.2 Energy Bill Analysis & Trends ...................................................................... 12

4.1.3 Area-Wise Energy Consumption Patterns .................................................. 13

4.1.4 Energy Demand Type-Wise Consumption Patterns ................................... 15

4.1.5 Fuel Consumption Patterns ........................................................................ 16

4.2 System-Wise Energy Performance Assessment & Energy Conservation Opportunities ................................................................................................................ 18

4.2.1 Load Curve Management ............................................................................ 18

4.2.2 HVAC System ............................................................................................... 19

4.2.2.1 HVAC Performance Assessment .......................................................... 19

4.2.2.2 HVAC Recommendations and Energy Conservation Opportunities .... 26

4.2.3 Lighting System ........................................................................................... 31

4.2.3.1 Lighting System Performance Assessment .......................................... 31

4.2.3.2 Lighting Recommendations and Energy Conservation Opportunities 36

4.2.4 Ventilation System ...................................................................................... 40

4.2.5 Pumping System .......................................................................................... 42

4.2.5.1 Pumping System Performance Assessment ........................................ 43

4.2.5.2 Pumping System Recommendations and Energy Conservation Opportunities ........................................................................................................ 48

4.2.6 Water Heating System ................................................................................ 52

4.2.6.1 Energy Saving Opportunities from Water Heating System ................. 52

4.2.7 Renewable Energy - Solar Thermal Water Heating System ........................ 59

4.2.8 Renewable Energy - Solar Photovoltaic System ......................................... 64

4.2.9 Deep Freezers, Refrigerator and Chiller Systems ....................................... 66

5 Water Audit Analysis ................................................................................................. 68

5.1 Rain Water Harvesting ....................................................................................... 68

5.2 Water Conservation Technologies ..................................................................... 69

6 Conclusion ................................................................................................................. 71 List of Tables

Table 1 Energy Bill Summary............................................................................................. 11

Table 2 Current TOD Tariff Structure ................................................................................ 12

Table 3 Base Tariff Structure ............................................................................................. 12

Table 4 Feeder Assessment (Trending) Time Periods ....................................................... 13

Table 5 Daily Active and Reactive Power Consumption Trend ......................................... 13

Table 6 Daily Active and Apparent Power Consumption Trend ....................................... 13


Table 7 Daily Area-Wise Energy Consumption Trends (7:00 am to 3:00 pm) .................. 14

Table 8 Energy Demand Type-wise Consumption Pattern ............................................... 15

Table 9 PNG Bill Summary ................................................................................................ 16

Table 10PNG Consumption Details ................................................................................... 17

Table 11 TOD Tariff Loss/Gain Summary .......................................................................... 18

Table 12 Feeder Assessment (Trending) Time Periods ..................................................... 18

Table 13 Installed AC Load Summary ................................................................................ 20

Table 14 HVAC System Performance Summary ................................................................ 21

Table 15 HVAC System Key-Performance Indicator Summary ......................................... 24

Table 16 Overall HVAC Energy and Cost Conservation Summary .................................... 29

Table 17 HVAC Environmental and Cost Savings Estimate from HVAC Equipment Replacement, Retrofit & Maintenance ............................................................................. 30

Table 18 ILER Based Assessment of Area wise Lighting.................................................... 31

Table 19 Lamp Efficiency Metrics ..................................................................................... 32

Table 20 Fixture-Wise Lighting Load and Energy Consumption Summary ....................... 32

Table 21 Area-Wise Lighting Load and Energy Consumption Summary .......................... 35

Table 22 Light Fittings to be removed .............................................................................. 36

Table 23 List of Light Fittings to be replaced with High Efficiency Lights ......................... 37

Table 24 List of Light Fittings to be reduced in Wattage .................................................. 37

Table 25 Lighting Cost Savings Estimate from Equipment Replacement (Indoor) ........... 37

Table 26 Lighting Environmental and Cost Savings Estimate from Equipment Replacement (Outdoor) .................................................................................................... 38

Table 27 Lighting Environmental and Cost Savings Estimate from Wattage Reduction .. 39

Table 28 Lighting Environmental and Cost Savings Estimate from Equipment Removal . 39

Table 29 Overall Lighting Energy and Cost Conservation Summary ................................. 40

Table 30 Blower System Details & Measurement ............................................................ 40

Table 31 Air Blower (Ventilation System) Environmental and Cost Savings Estimate from Operational Run-time Reduction ...................................................................................... 42

Table 32 Water Bill Details ................................................................................................ 43

Table 33 Water Consumption Summary ........................................................................... 44

Table 34 Swimming Pool Pump Technical Specifications ................................................. 45

Table 35 Swimming Pool Pump Working Schedule .......................................................... 46

Table 36 Swimming Pool Pumps Flow Measurements & Pipe Details ............................. 46

Table 37 Pressure Drop Calculation - 12.0 HP Pump ........................................................ 46

Table 38 Pressure Drop Calculation – 7.5 HP Pump ......................................................... 47

Table 39 Pumping System Efficiency Calculations ............................................................ 47

Table 40 Piping System Energy and Cost Saving Opportunities from Removal of Pipe Bends ................................................................................................................................. 48

Table 41 Pumping System Environmental and Cost Savings Estimate from Equipment Repair and Retrofit ............................................................................................................ 51

Table 42 Pumping System Environmental and Cost Savings Estimate from Equipment Replacement ..................................................................................................................... 51

Table 43 Overall Lighting Energy and Cost Conservation Summary ................................. 51

Table 44 Hot Water Shower System Electrical Details ..................................................... 52


Table 45 Hot Water Shower Environmental and Cost Savings Estimate from MCB Retrofit ........................................................................................................................................... 53

Table 46 Jacuzzi Pond Dimensions .................................................................................... 54

Table 47 Hot Water Shower Heating System Environmental and Cost Savings Estimate from Equipment Replacement .......................................................................................... 55

Table 48 Jacuzzi Heating System Environmental and Cost Savings Estimate from Equipment Replacement .................................................................................................. 55

Table 49 Steam and Sauna Room Power Measurements ................................................ 56

Table 50 Steam and Sauna Room Operating Parameters ................................................ 56

Table 51 Steam Room Heating System Environmental and Cost Savings Estimate from Equipment Replacement .................................................................................................. 58

Table 52 LPG Replacement for Water Heating System - Energy and Cost Conservation Summary ........................................................................................................................... 58

Table 53 Roof Surface Area Survey ................................................................................... 59

Table 54 Solar Thermal Heating System Design ............................................................... 60

Table 55 Solar Thermal Panel Specifications .................................................................... 62

Table 56 Solar Thermal Water Heating System Environmental and Cost Savings Estimate ........................................................................................................................................... 63

Table 57 Solar PV System Design ...................................................................................... 64

Table 58 Solar PV System Environmental and Cost Savings Estimate .............................. 65

Table 59 Energy Assessment from Deep Freezers, Refrigerators, and Beverage Chillers 67

Table 60 Khar Gymkhana Water Bill Summary ................................................................. 68

Table 61 Rainwater Harvesting Analysis ........................................................................... 69

Table 62 Water Conservation Fixtures Analysis ............................................................... 70

Table 63 Water Conservation related Environmental, Water, and Cost Conservation Summary ........................................................................................................................... 70

Table 64 Overall Conservation Summary from Energy Efficiency & Renewable Energy .. 73

Table 65 Listing of Energy Conservation MACC Projects .................................................. 77

List of Figures

Figure 1 Fluke Power Analyzer ............................................................................................ 7

Figure 2 MECO Harmonater - Clamp-On Meter ................................................................. 8

Figure 3 Anemometer for Measuring Flowrate of Air ........................................................ 8

Figure 4 Psychrometer for Measuring Dry Bulb and Wet Bulb Temperature .................... 9

Figure 5 Energy Consumption by Load Type..................................................................... 16

Figure 6 HVAC Load AC Type-wise Distribution ................................................................ 20

Figure 7 HVAC Area-Wise Energy Consumption & Installed Capacity .............................. 22

Figure 8 Efficient vs. Inefficient AC Capacity Comparison for Small and Large ACs ......... 23

Figure 9 Area vs. EER Summary ........................................................................................ 23

Figure 10 Outdoor Units Installed Under the Beam ......................................................... 26

Figure 11 Ducts for Hot Air ............................................................................................... 27

Figure 12 Detoriated Insulation Copper Pipes .................................................................. 28

Figure 13 Overlapping Wires ............................................................................................ 28

Figure 14 Metal Halide Lamps Used at the Tennis Court ................................................. 33


Figure 15 Lighting Load Fixture Type-wise Distribution ................................................... 34

Figure 16 Lighting Load Area-wise Distribution ................................................................ 36

Figure 17 Air-Blower Based Ventilation System ............................................................... 41

Figure 18 Swimming Pool Pumping System Schematic .................................................... 49

Figure 19 Khar Gymkhana Jacuzzi Pond Dimensions ........................................................ 54

Figure 20 General Specifications for Solar Thermal Storage Tank ................................... 61

Figure 21 Area-Wise Overall Annual Energy Consumption Comparison .......................... 71

Figure 22 System-Wise Overall Annual Energy Consumption Comparison ...................... 72

Figure 23 Marginal Abatement Cost Curve....................................................................... 75


1 Introduction The cBalance Solutions Hub (Mumbai, India) was contracted by Khar Gymkhana to conduct a complete thermal and electrical Energy Audit, as well as a partial Water Audit, as the primary step of an objective to transform the institution into a ‘green club’ through conservation of natural resources and reducing environmental impact of their operations. The overarching objectives of the exercise were to: Determine the energy and related cost conservation potential for the Gymkhana’s building facilities based on technological interventions Determine the energy and related cost conservation potential based on architectural interventions (especially related to building envelope/Air Conditioned space insulation) Determine the electrical energy cost reduction potential based on operational process changes (related to reorganizing the scheduling of energy consuming activities) Establish the comparative financial feasibility of proposed alternatives on a life-cycle cost basis. Additionally, the cBalance Solutions Hub determined the GHG mitigation potential for the proposed alternatives to reduce the overall Carbon Footprint of Khar Gymkhana (Scope 1 and Scope 2 Emissions). This assessment culminates in a marco-level Marginal Abatement Cost Curve Analysis.

MACC Curves: An enterprise-specific Marginal GHG Abatement Cost Curve (MACC)

analysis is a key component of an institutionalized Sustainability Strategy. It is designed to

discover the most cost-effective means of mitigating climate change impact through

technological interventions or modifications in management practices. It is a vital decision-

support input for planning capital expenditure on Energy Efficiency, Water Conservation,

Waste Reduction & Management etc. projects in a manner that safeguards the financial

sustainability of the Organization while achieving tangible environmental and socio-

economic sustainability benefits for the planetary ecosystem. The idea is to harvest the

low-hanging fruits first, accumulate the economic benefits from these no-regret options

and then steps through more challenging interventions. In this way, it reduces financial risk

and ensures longevity of the environmental program at large.

MACC Methodology: Costs and benefits are calculated based on real values of

financial parameters such as inflation, interest rates, cost of electricity, energy etc. and

resource conservation benefits of options reflect the enhancement in technological

alternatives available over time.


Figure 1 Fluke Power Analyzer

2 Project Scope The geographical scope of the project comprised execution of a detailed 7-day energy and Water Audit of Khar Gymkhana’s Campus (Mumbai, India). The systems studied and assessed as part of the Energy + Water Audit and Conservation Strategy devising process included the following: HVAC Systems: Split ACs, Cassette ACs, Ductable ACs Lighting Systems: TFL Lights and CFL Bulbs Water Heating Systems: Electrical Geysers Ventillation Systems Pumping Systems Deep-Freezers, Refrigerators and F&B Chillers Water Shower and Toilet Flushing Systems

3 Methodology The field measurement methodology adopted included the following processes and equipments:

Fluke 434 and 435 Power Analyzer: for verifying total connected electrical load of

commercial building (kVA), the overall system Power Factor (PF), and other parameters

including total current drawn (A) and Voltage (V), and measuring electrical parameters

of HVAC equipment clusters - to establish baseline system performance


Figure 2 MECO Harmonater - Clamp-On Meter

Figure 3 Anemometer for Measuring Flowrate of Air

MECO Harmonater – Clamp-On Meter: for measuring electrical parameters of individual

HVAC equiment - to establish baseline system performance

Lutron Luxmeter: for measuring lux levels on the working planes of the workspaces and

human occupancy areas

Lutron Anemometer: for measuring flowrate (velocity) of condenser cooling air exiting

the outdoor-units to determine the heat rejected by the individual HVAC equipment

(equivalent to delivered cooling – tonnes of refrigeration or TR)


Figure 4 Psychrometer for Measuring Dry Bulb and Wet Bulb Temperature

Psychrometer: for measuring the dry bulb temperature (DBT) and wet bulb temperature

(WBT) of the ambient and condenser-cooling air to establish the enthalpy change across

the condensers of the outdoor units.

Measuring Tape: to measure the diameter of outdoor unit fans to convert air velocity

into mass flow rate.

Ultrasonic Flow meter

Kyoritsu Open fork Clamp On meter


4 Energy Audit Data Analysis

4.1 Baseline Performance Measurement

4.1.1 Electricity Consumption

Electricity to the campus is provided through a single commercial metered connection from Reliance Energy. The following are the details of the facility’s electrical connection

Meter No. : RI – H952042 Tariff : HT – II Commercial Consumer No : 2044335. Sanctioned / Contract Demand : 400 KVA / KW. Baseline electrical energy consumption was determine through a review of the electric bills paid by the facility over a 12 month period. The electricity bills spanned 2 different Time-of-Day (TOD) Tariff regimes implemented by the utility provider. These have been classified as ‘OLD’ and ‘NEW’ as presented in Table 1 below to distinguish the potential electricity cost savings opportunities available during the currently applicable (Jan 2014 onwards) TOD tariff structure as described later.

Table 1 Energy Bill Summary

Month

TOD Tariff Structure Metered

KWH

Rec. Demand [KVA]

Recorded PF

Bill Amount [Rs.]

Energy Charges [Rs.]

Excess Demand Charges [Rs.]

Excess. Demand [KVA]

PF Incentive [Rs.]

Apr. 14 #NEW 1,76,028.00 668.40 0.999 21,17,966.88 12,95,566.08 80,520.00 268.40 1,32,203.08

Mar. 14 #NEW 52,212.00 577.20 0.997 21,21,567.94 13,88,592.72 53,160.00 177.20 1,34,071.99

Feb. 14 #NEW 1,34,856.00 519.60 0.999 17,55,528.48 11,35,487.52 35,880.00 119.60 1,09,741.51

Jan. 14 #NEW 1,62,732.00 602.40 1.000 21,57,612.08 13,70,203.44 70,840.00 202.40 1,35,389.47

Nov. 13 #OLD 1,78,020.00 613.00 0.999 26,92,396.00 11,78,207.00 1,86,500.00 213.00 1,68,677.20

Oct. 13 #OLD 1,90,368.00 641.00 0.999 28,81,860.00 12,59,929.00 2,00,500.00 241.00 1,80,549.66

Sep. 13 #OLD 1,73,736.00 586.00 1.000 26,15,204.00 11,49,852.00 1,73,000.00 186.00 1,63,828.88

Aug. 13 #OLD 1,73,496.00 558.00 0.999 16,67,846.00 11,48,262.00 1,59,000.00 158.00 1,03,546.06

July 13 #OLD 1,70,208.00 551.00 0.999 16,32,892.00 11,26,501.00 1,55,500.00 151.00 1,01,377.77

June 13 #OLD 1,60,080.00 558.00 1.000 14,27,501.00 8,48,884.40 1,19,250.00 158.00 88,451.61

May 13 #OLD 1,72,884.00 589.00 0.999 15,46,751.00 9,16,780.80 1,30,875.00 189.00 95,849.14

Apr. 13 #OLD 1,52,784.00 580.00 0.997

Energy bill details were not provided by the client for this period

Mar. 13 #OLD 1,41,912.00 499.00 0.998

Feb. 13 #OLD 1,20,420.00 514.00 0.999

Jan. 13 #OLD 1,28,520.00 470.00 0.996

Dec. 12 #OLD 1,41,732.00 570.00 0.956

Nov. 12 #OLD 1,40,580.00 583.00 0.953

Note: The billed Units are 1.978 % more than Metered Units. The currently applicable TOD tariff incentive / disincentive structure is presented in Table 2 below. As indicated by the structure, there exist noteworthy opportunities to re-structure the activity schedule of the campus to minimize consumption during periods of energy consumption penalty charges (peak hours) and shift as much of the electrical energy consuming activities to non-peak hours where there is either no penalty or in fact a reduced energy charge applicable.

Table 2 Current TOD Tariff Structure

Month TOD A (KWH) 9 - 12 Hrs

TOD B (KWH) 18 – 22 Hrs

TOD C (KWH) 22 – 6 Hrs

Incentive / Disincentive

Base Charge + 0.50 Rs./kWh


Base Charge – 0.75 Rs./kWh

April 14 24240 56340 25044

Mar. 14 22128 52212 24660

Feb. 14 17424 43728 21624

Jan. 14 21038 52704 26508

Base charges effective from 1 July, 2013 to March 2014 (FY 2013-14) are provided in Table 3 below. Total TOD-based tariffs would thus be calculated by summing these base charges with the incentive/disincentive charges presented in the Table 2 above.

Table 3 Base Tariff Structure

Item Rate

Fixed Demand Charge Rs. 200 per kVA per month

Wheeling Charge Rs. 0.89 / kWh

Energy Charge Rs. 6.49 / kWh

4.1.2 Energy Bill Analysis & Trends

The energy bills were available for two periods, a) Nov 2012 to Nov 2013, and b) Jan 2014 to April 2014. The average energy cost being paid by the facility is INR 20.85 Lakh per month and INR 2.503 Crore per year. The assessment of monthly energy bills indicates an average monthly energy consumption (excluding March 2014, which recorded a exceptionally low value and is considered a outlier) of 1,57,397 kWh/month. The highest energy consumption was during August to November (13.5% higher than the average) and low energy consumption was during December to January (21% lower than the average). High energy consumption can be attributed mainly to higher Air Conditioning power during high humidity, temperature period - August to November. The average monthly consumption value of 1,57,397 kWh/month can be taken as present energy benchmark and the goal of the energy conservation process, the ultimate desired outcome of the Energy Audit process, is to identify possibilities for reducing this benchmark energy consumption to the greatest extent feasible. In addition to understanding the average energy consumption profile per month, the power analysis equipment was deployed for the purpose of gauging diurnal patterns of energy consumption i.e. the magnitude and periods of occurrence of maximum and minimum power demand. The time period of assessment for the main feeder (i.e. entire gymkhnana) and for the 2 main sub-feeders supplying energy to the Old and New Gymkhana Buildings was as follows in Table 4.


Table 4 Feeder Assessment (Trending) Time Periods

Item Trending Period

Entire Gymkhana [Main Incomer] 24 hours

Old Building [Main Gate Feeder] 07 Hours [11:00 A.M. to 6:00 P.M.]

New Building [New Bldg. – Basement] 02 Hours [12:16 P.M. to 2:16 P.M.]

The results of this assessment is provided in Table 5 and Table 6 below.

Table 5 Daily Active and Reactive Power Consumption Trend

Area Active Power [KW] Reactive Power [kW]

Max. Min Avg. Max. Min Avg.

Entire Gymkhana 164.71 153.39 155.88 183.87 173.10 175.55

Old Building 66.74 50.60 53.45 79.12 59.52 63.22

New Building 118.91 110.89 113.94 121.77 112.10 115.63

Table 6 Daily Active and Apparent Power Consumption Trend

Area Max. Demand (KVA) Time

Min Demand (KVA) Time

Entire Gymkhana 425.00 7:20 PM 84.50 02:20 AM

Old Building 117.70 5:50 PM 18.70 11:20 AM

New Building 251.40 8:32 PM 12.00 01:10 AM

Based on the above tables it is clear that peak loading hours start from 6: 00 P.M. to 11:00 P.M. This is the time when TOD charges are highest. Gymkhana pays substantial amount on account of operations during peak hours.

4.1.3 Area-Wise Energy Consumption Patterns

While understanding the cumulative energy consumption of the physical facilities was vital, it was of even greater significance to dissect this total energy consumption across physical areas as well as energy consuming systems to identify the key energy consuming hotspots in order to be able to integrate them into an energy conservation plan for the campus. To understand the area-wise dissection of total energy consumption, the Client provided energy consumption from 12/07/14 to 18/07/14 for various areas. These details were only partially useful as the readings cover a fractional time span from 7:00 AM to 3:00 PM every day and energy consumption on 13/07/14 was not furnished. In the context of these limitations, the data tabulated below allows the subsequent conclusions to be drawn with respect to the areas of the campus which draw a majority of the power consumed.


Table 7 Daily Area-Wise Energy Consumption Trends (7:00 am to 3:00 pm)

Department

DATE Total Units [KWh] 12/07/14 14/07/14 15/07/14 16/07/14 17/07/14 18/07/14

Gymnasium 266 140 163 350 179 345 1,443

Gents Health Club 95 28 244 166 10 144 687

S/Pool Side 60 44 130 94 48 59 435

Plant Room 32 39 42 75 71 49 308

Ladies Changing Room 32 34 35 61 39 57 258

Inn swinger Bar room 36 39 28 49 38 38 228

Ladies Health Club 25 24 34 40 26 29 178

Billiards 27 8 61 38 0 36 170

Badminton 23 21 19 46 23 35 167

Squash 16 12 4 41 11 45 129

Basement Car Parking 15 16 11 29 13 38 122

Canteen 12 12 0 42 25 28 119

Card Room Light 17 12 13 20 9 14 85

Library 11 5 10 13 16 11 66

Table Tennis 6th floor 0 0 1 0 43 22 66

Canteen Outside 0 7 19 14 10 14 64

Pavilion Restaurant 10 9 8 14 10 9 60

Card Room A/C 1 20 5 14 9 4 53

Gents changing Room 8 0 11 18 0 12 49

Cake Counter 8 5 7 10 12 5 47

Tennis Light 4 2 10 9 10 6 41

Cyber Café 2 0 3 10 0 9 24

Cricket 4 2 6 5 3 4 24

Ice Cream Parlour 3 4 0 8 4 1 20

Melting Pot 3 2 2 4 3 4 18

ATM 2 2 2 3 1 2 12

Old Table Tennis Light 0 0 1 1 0 2 4

Old Table Tennis A/C 0 2 0 0 0 0 2

Old Squash Light 0 0 0 1 1 0 2

Black Dog 0 0 1 0 0 1 2

Old Squash A/C 0 0 0 0 1 0 1

Razzberry Juice 0 0 0 0 0 0 0

Cricket Pump 0 0 0 0 0 0 0

The area-wise dissection of energy consumption clearly indicates that the key energy consuming hotspots are expected to be Gymnasium, Gents Health Club, Swimming Pool Side Plant Room, Ladies Changing Room, Inn swinger Bar room which are themselves responsible for approximately 70% of the energy consumption of the entire campus. It


must be noted here that this breakdown is based on manually recorded readings as maintained by the Client’s staff and are not based on recordings by the power analysis equipment utilized for detailed audit of individual systems. It serves as a general validation of the suspected high-energy consuming areas. Since energy conservation plan would have to be designed around improving performance of specific energy consuming equipment, a demand-type wise dissection and micro analysis is more important for the purposes of this Energy Audit and is presented below.

4.1.4 Energy Demand Type-Wise Consumption Patterns

The major sources of energy demand studied during the Energy Audit were the following: Total Lighting Load

Total A/C Load

Hot Water Consumption

Pumping & Swimming Pool Load

Ventilation System Load

Deep-Freezers, Refrigerators and F&B Chillers

Power consumption was measured using field audit equipment and represents primary field data. The results of the load study are tabulated below in descending order of magnitude of power consumption in Table 8 and Figure 5 below. The total load recorded was 568 kW. The overarching conclusion of this is that the AC Load is by the far the most critical component of energy consumption followed narrowly by the Lighting Load. The two sources cumulatively contribute approximately 85% of the total energy demand of the Khar Gymkhana campus. Water heating equipment, pumps and ventillation Fans (for non-HVAC cooled areas), and refrigeration equipment contribute approximately 15% to the energy demand.

Table 8 Energy Demand Type-wise Consumption Pattern

Load Details Power Consumption [KW]

AC Load 269.33

Lighting Load 210.39

Boilers & Steam Generators 42.03

Pumps 24.02

Ventilation Fan 22.39

TOTAL LOAD 568.16


Figure 5 Energy Consumption by Load Type

4.1.5 Fuel Consumption Patterns

The only fossil fuel type used by the campus is Piped Natural Gas provided by the local gas utility. Details of the monthly gas consumption are presented in Table 9 and Table 10 below. The gas is used primarily for cooking purposes for the food & beverage services provided by the Gymkhana.

Table 9 PNG Bill Summary

Period Consumption (SCM) Total Bill Amount (Rs)

Feb – 14 6903 5, 40, 786.00

Jan – 14 4245 2, 75, 633.00

Dec – 13 7842 4, 79, 645.00

Nov – 13 6938 4, 44, 500.00

Oct – 13 6881 4, 14, 309.00

Sep – 13 7210 4, 08, 897.00

Aug – 13 3410 1, 85, 796.00

July – 13 5931 3, 12, 305.00

June – 13 4682 2, 58, 830.00

May -13 4292 2, 50, 355.00

Apr -13 4463 2, 36, 818.00

AC Load 48%

Lighting Load 37%

Boilers & Steam Generators

7%

Pumps 4%

Ventilation Fan 4%

Energy Consumption by Load Type - Khar Gymkhana 2014

AC Load

Lighting Load

Boilers & Steam Generators

Pumps

Ventilation Fan

Total Load = 568.16 kW


Table 10PNG Consumption Details

Date Meter No. Gas Cons. [SCM]

Charge [Rs.] Basic Price [Rs. / SCM]

Rate Variations

28/02/2014 2735550 1227.00

257,114.00 70.45 Stable Rate 5239767 2014.00

13/02/2014 2735550 1358.00

283,672.00 57.63 30/01/2014 to 31/01/2014

5239767 2304.00 70.45 01/02/2014 to 13/02/2014

29/01/2014 2735550 1685.00

275,633.00 57.63 Stable Rate 5239767 2560.00

29/01/2014 2735550 1685.00

275,633.00 57.63 Stable Rate 5239767 2560.00

29/12/2013 2735550 1791.00

259,819.00 54.21 Stable Rate 5239767 2460.00

13/12/2013 2735550 1428.00

219,826.00 57.07 30/11/2013 to 31/11/2013

5239767 2163.00 54.21 01/12/2013 to 13/12/2013

29/11/2013 2735550 1286.00

223,144.00 57.07 Stable Rate 5239767 2188.00

13/11/2013 2735550 1272.00

221,356.00 53.57 30/10/2013 to 31/10/2013

5239767 2192.00 57.07 01/11/2013 to 13/11/2013

29/10/2013 2735550 1343.00

224,854.00 53.57 Stable Rate 5239767 2388.00

13/10/2013 2735550 1051.00

189,455.00 50.32 30/09/2013 to 31/09/2013

5239767 2099.00 53.57 01/10/2013 to 13/10/2013

29/09/2013 2735550 1204.00

204,022.00 50.32 Stable Rate 5239767 2400.00

13/09/2013 2735550 1213.00

204,875.00 47.86 30/08/2013 to 31/08/2013

5239767 2393.00 50.32 01/09/2013 to 13/09/2013

13/08/2013 2735550 1338.00

185,796.00 46.28 30/07/2013 to 31/07/2013

5239767 2072.00 47.28 01/08/2013 to 13/08/2013

29/07/2013 2735550 1128.00

150,468.00 46.28 Stable Rate 5239767 1762.00

13/07/2013 2735550 1260.00

161,837.00 48.36 30/06/2013 to 31/06/2013

5239767 1781.00 46.28 01/07/2013 to 13/07/2013

29/06/2013 2735550 1062.00

132,422.00 48.36 Stable Rate 5239767 1372.00

13/06/2013 2735550 1373.00

126,408.00 51.27 30/05/2013 to 31/05/2013

5239767 875.00 48.36 01/06/2013 to 13/06/2013

29/05/2013 2735550 1495.00

142,689.00 51.27 Stable Rate 5239767 978.00

13/05/2013 2735550 1072.00

107,666.00 45.92 30/04/2013 to 31/04/2013

5239767 747.00 51.27 01/05/2013 to 13/05/2013

29/04/2013 2735550 1538.00

137,234.00 45.92 Stable Rate 5239767 1116.00

13/04/2013 2735550 1062.00

99,584.00 48.03 30/03/2013 to 31/03/2013

5239767 747 45.92 01/04/2013 to 13/04/2013

The above assessment indicates that the average monthly Natural Gas consumption is 5,708.82 SCM with a maximum and minimum range of 6,903.00 SCM and 3,410.00 SCM per month, respectively.


4.2 System-Wise Energy Performance Assessment & Energy Conservation Opportunities

4.2.1 Load Curve Management

The most overarching analysis conducted during the Energy Audit related to the potential for reducing energy cost for the Client without any additional expenditure on equipment or modifying operation processes. This is in recognition of the fact that rescheduling energy consuming activities which afford flexibility (such as municipal water pumping, hot water generation etc.) to occur during off-peak hours can lead to direct savings through alignment with the TOD tariff incentive time-table. As presented earlier, the TOD tariff structure incentivizes energy consumption during the off-peak hours of 10 pm to 6 am. The analysis of possible energy cost conservation opportunities is presented in Table 11 below:

Table 11 TOD Tariff Loss/Gain Summary

Month TOD A (KWH) 9 - 12 Hrs

TOD B (KWH) 18 – 22 Hrs

TOD C (KWH) 22 – 6 Hrs

Incentive / Disincentive



Base Charge – 0.75 Rs./kWh

April 14 24240 56340 25044

Mar. 14 22128 52212 24660

Feb. 14 17424 43728 21624

Jan. 14 21038 52704 26508

Amount (INR) INR 42,415 (Loss) INR 2,04,984 (Loss) INR 73,377 (Credit)

The above analysis indicates that the Client currently suffers an increased energy cost of INR 7.50 lakh1 approximately annually due to energy consumption during peak periods of 9 am to 12 noon and 6 pm to 10 pm. While it might not be possible to shift many of the operations (especially HVAC and lighting operations) to off-peak hours, it would be beneficial to identify all non-essential activities that can be re-scheduled to take advantage of TOD tariff incentives. Our analysis of peak loads indicate that the peak loads for the 3 feeders, Main, Old Building and New Building are presented in Table 12 as follows:

Table 12 Feeder Assessment (Trending) Time Periods

Item Peak Load Period

Entire Gymkhana [Main Incomer] 6:30 PM to 10: 00 PM

Old Building [Main Gate Feeder] 1:20 PM to 9:40 PM

New Building [New Bldg. – Basement] 4:30 PM to 10:30 PM & 6:15 AM to 12:30 PM

Significant opportunities for cost reduction exist if operational rescheduling of activities is undertaken as per the following recommendations:

1 extrapolating the 4 month analysis to 12 months


4.2.2 HVAC System

4.2.2.1 HVAC Performance Assessment

Air Conditioning systems transfer the heat energy from the building environment to the atmosphere. Energy in the form of electricity is used to power mechanical equipment designed to transfer heat from a colder, low energy level to a warmer, high energy level. Technical literature related to HVAC system design indicates that a temperature band of 22 ⁰C – 25 ⁰C with a relative humidity of 55% is the most appropriate combination for human comfort. Furthermore, research by the Indian Green Building Council (IGBC) specifies that an indoor temperature of 240C is ideal for thermal comfort for Indians. The goal of this pivotal component of the Energy Audit was to optimize the Air Conditioning system to deliver the comfort in the most economical manner by examining and enhancing technical performance parameters of the existing equipment, recommending economically feasible overhauls, and operation and maintenance protocols being followed. The Air Conditioning Systems at Khar Gymkhana account for nearly 48% of the total load on the electrical system. The total installed load is 430.2 TR and it represents the most critical component of the energy management and conservation plan that emerges as the outcome of this Energy Audit. The installed loads across the spectrum of AC system types is presented below.

Khar Gymkhana may plan electricity usage such that maximum power consumption

is during 06:00 to 09:00 hrs and 12:00 to 18: 00 hrs followed by consumption during

09:00 to 12:00 hrs.

Avoid usage during 18:00 to 22: 00 hrs as far as possible

Increase usage during 22:00 to 06:00 hrs

Review reason for a relatively high night time load in the range of 84 kVA which

indicates potential for switching off unused equipment, appliance, fixtures etc.

Planning of activities in the above manner would curtail revenue loss on account of

TOD. The total annual penalty for peak-hour consumption is approximately INR 7.50

lakh. Impacting this by 30% would lead to annual savings of INR 4.18 lakh per year.


Table 13 Installed AC Load Summary

Type of Air Conditioners

Rated TR

1 1.5 2 3.7 5 10 20 30 Total TR

Window 3 2 5 16

Split 2 32 67

Ductable 2 3 5 8 229

Tower 6 22.2

Cassette 8 16

Packaged AHU 2 2 80

Total TR 3 6 94 22.2 15 70 160 60 430.2

The tabulation of installed AC loads indicates that the majority installed ACs are 2 TR ACs (spanning window, split and cassette ACs primarily), 10 TR and 20 TR ductable ACs which function like large split-unit ACs. The distribution amongst AC types in terms of cooling capacity is presented in Figure 6 below.

Figure 6 HVAC Load AC Type-wise Distribution

As is evident from the chart, in terms of installed capacity large size Ductable ACs and Packaged AHUs comprise a bulk (~ 72%) of the cooling load with Split ACs representing the third largest component at 16%.

Window3.7%

Split15.6%

Ductable53.2%

Tower5.2%

Cassette3.7%

Packaged AHU18.6%

Khar Gymkhana Energy Audit - AC Type-Wise HVAC Load Distribution

Window

Split

Ductable

Tower

Cassette

Packaged AHU

Total Cooling Capacity= 430.2 TR


Detailed measurements, calculations and results of individual equipment analysis is presented in Annexure 1 of the report. The overall performance assessment of the HVAC system (classified as Small ACs which are of less than 5 TR capacity and Large ACs greater than 5 TR) in its current state is presented in Table 14 below. While the total installed capacity is 430 TR, only 356 TR was possible to assess during the Energy Audit since the other equipment was not ON during the period of assessment (either due to insufficient cooling load or malfunctioning equipment).

Table 14 HVAC System Performance Summary

Scenario Total Cap. (TR)

Avg. kW/TR

Avg. EER

Avg. Star Rating

Oper. hrs./day

Energy Consump. (kWh/yr.)2

Demand kVA)

Energy Cost (INR/yr.)

GHG Emiss. (MT CO2e/yr.)

Large AC (> 5 TR)

221.9 1.00 3.51 5 Star 10 5,34,970 296.1 70,88,348.4 668.7

Small ACs (< 5 TR)

134.20 1.48 2.37 No Star 8 3,81,618 264.0 50,56,434.1 477.0

Total 356.1 9,16,587.4 560.1 1,21,44,782.5 1,145.7

The assessment indicates that Khar Gymkhana incurs an annual energy consumption of approximately 9.17 lakh units of electricity and an energy cost of INR 1.21 crore per year as a consequence of HVAC system operation. The cumulative demand (if all equipment were functioning simultaneously) from ACs is 560 kVA and the resulting GHG emissions are 1,146 tonnes of CO2e/year. Small ACs represent nearly 38% of the installed capacity and lead to nearly 42% of the energy consumption from HVAC while Large ACs comprise 62% of the capacity and cause 58% of the energy consumption. The area-wise energy consumption and installed AC capacity is presented in the figure below. The results make it clear that there is a direct correlation between the installed cooling capacity and the estimated annual energy consumption. The 5 most significant contributors to HVAC energy consumption are Presidential Hall, Badminton Court, 4th, Floor Gym, Pavillion Restaurant, and the Card Room which cumulatively represent more than 50% of the annual energy consumption on Air Conditioning.

2 Energy consumption is calculated based on 365 days/year operation and a ‘diversity’ factor of 66% which in this case is taken to be the compressor ON time percentage based on part load operation due to occupancy and seasonal outdoor temperature and humidity variation.


Figure 7 HVAC Area-Wise Energy Consumption & Installed Capacity

The Bureau of Energy Efficiency (BEE) provides guidelines through parameters like TR / m², KW/TR to check the effectiveness and health of the installation. The Table 15 below gives the section wise details of all AC systems on the campus across these key-performance indicators (KPIs) mentioned above. The analysis indicated that the average energy efficiency of the smaller ACs is relatively low at 2.37 while the energy efficiency of the larger ACs is generally higher at 4.06. This indicates a clear opportunity for energy savings from the small ACs through replacement, retrofit etc. Interestingly, as indicated in the analysis presented below, while the overall energy efficiency of the larger ACs is high there are many of the specific ACs who’s notably low energy efficiency ratios are offset by the high EER’s of some of the other ACs. Thus, there are also opportunities for savings from some of these ACs. To clarify this potential, the % ‘inefficient’ and ‘efficient’ AC capacity across small and large ACs was calculated. ‘Efficient’ ACs were defined as those with a field-measured EER that would qualify for at least a BEE 3-Star Rating (EER of 2.9 to 3.1). Those with lower field-measured EERs were classified as ‘Inefficient’. The conclusion of this assessment is provided in Figure 8 below. The chart clearly indicates that the percentage of efficient equipment is higher for small ACs (approximately 62%) while efficient capacity amongst the larger ACs is only 45%. This illustrates the potential for energy conservation amongst the larger ductable and packaged AHU HVAC systems.

0

5

10

15

20

25

30

35

40

45

0

10,000

20,000

30,000

40,000

50,000

60,000

70,000

80,000

90,000

1,00,000

Inst

alle

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(TR

)

An

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)Khar Gymkhana Energy Audit - HVAC Area-Wise Energy Consumption Summary

Energy Consumption (kWh/yr.) Total Installed Tested Capacity (TR)


Figure 8 Efficient vs. Inefficient AC Capacity Comparison for Small and Large ACs

The area-wise EER calculated based on field measurements is presented in the chart below and in the subsequent table along with other parameters. As is evident, there is a notable proportion of the facility’s areas which are being served by relatively inefficient ACs (i.e. those with a equivalent BEE Star Rating of less than 3). Contrastingly, some of the better performing ACs in the system are the ones serving the Presidential Hall, 4th Floor Gym, and Pavilion Restaurant, Card Room and the Black Dog Restaurant & Bar.

Figure 9 Area vs. EER Summary

83.4100.0

50.8

121.9

0.0

25.0

50.0

75.0

100.0

125.0

150.0

175.0

200.0

225.0

250.0

Small AC Large AC

Co

olin

g C

apac

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(TR

)

Khar Gymkhana Energy Audit - HVAC Efficient Capacity Summary

Efficient Capacity (TR) Infficient Capacity (TR)

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

5.50

6.00

EER

Khar Gymkhana Energy Audit - HVAC Area vs. Energy Efficiency Ratio Summary

3 Star Rating Min EER Threashold

Table 15 HVAC System Key-Performance Indicator Summary

Area Floor Area (m2)

Installed TR

Delivered TR

Delivered TR/m²

Rating (Cooling Delivered/m2)

Rec. Temp [0C]

Rating (Temperature)

EER Equivalent BEE Star Rating

Presidential Hall 170.6 36.0 41.0 0.240 Excessive 23.0 OK 3.58 5 Star

Badminton Court 460.3 30.0 9.8 0.021 Insufficient 26.0 High Temp. 1.26 No Star

4th Floor Gym 230.8 39.8 29.7 0.129 OK 20.0 Low Temp. 3.57 5 Star

Pavillion Rest. 198.5 24.0 40.9 0.206 Excessive 23.5 OK 5.48 5 Star

Card Room 235.9 24.0 39.9 0.169 Excessive 23.0 OK 5.85 5 Star

Black Dog Bar & Rest. 166.2 22.4 23.0 0.138 Excessive 24.0 OK 3.60 5 Star

Melting Pot Rest. 188.5 20.0 10.1 0.053 Insufficient 26.0 High Temp. 1.70 No Star

Billiards Room 237.0 21.9 11.9 0.050 Insufficient 22.5 OK 2.08 No Star

TT Department 308.0 20.0 13.7 0.045 Insufficient 24.5 OK 2.45 No Star

5th Floor Squash Court 260.2 20.0 3.2 0.012 Insufficient 25.0 High Temp. 0.63 No Star

Ballantines Bar 63.4 10.0 6.1 0.096 OK 27.0 High Temp. 2.65 1 Star

Yoga Room 64.2 4.0 5.9 0.091 OK 25.0 High Temp. 2.44 No Star

Conference Room 49.4 5.5 3.5 0.070 Insufficient Temp. not measured

High Temp. 3.25 4 Star

Note: 1. Std. TR/m2 estimated based on 1 TR of cooling load required per 100 sq. ft in warm and humid climatic zones 2. A deviation of more than 20% from the Std. TR/m2 was considered for assessment of insufficient or excessive cooling 3. An ambient indoor temperature range of 220C to 250C was accepted as OK. Temperatures above or below that were considered as low or high.

The KPI analysis presented above leads to the following conclusions:

The Presidential Hall, Pavillion, Black Dog Bar & Restaurant, Ballantine Bar and Card

Room areas have more than adequate TR/m2 being delivered need no further

attention.

There seems to be inadequate cooling delivered to Squash Court, Melting Pot

Restaurant, Table Tennis Room, Conference Room, Badminton Court, and Billiards

Room.

Of the spaces where inadequate cooling is occurring, the Badminton Court and

Billiards Room have inadequate installed capacity (i.e. insufficient TR installed).

The Squash Court, Melting Pot Restaurant, Table Tennis Room, and Conference

Room are experiencing inadequate cooling because of poor system design and

operational inefficiency.

The kW/TR assessment (a measure of the energy efficiency of the ACs) indicates that

the Energy Efficiency Ratio (EER) of the ACs in the Yoga Room (Split Unit ACs),

Melting Pot Restaurant (Ductable ACs), Ballantine Bar (Ductable ACs), Table Tennis

Department (Ductable ACs), Badminton Court (Packaged AHUs) Billiards Rooms

(Packaged AHUs), and the 2 Split ACs in the 1st Floor Card Room is very poor and the

equipment is highly inefficient. All but one set of these ACs demonstrate a measured

energy efficiency that do not equate to even a 1 Star rating as per the BEE’s Star

Rating System for energy efficiency while the Ballantine Bar AC demonstrates a poor

1-Star efficiency.

The recorded temperature in the Gymnasium area is amongst the lowest of the

entire campus. This is contrary to the perceived temperature and comfort issues as

reported by users of this facility. The audit process leads to the conclusion that the

perceived sub-optimal performance is an outcome of elevated body temperature,

inadequate air-movement within the space which undermines the perceived

‘evaporative’ cooling effect (even while ambient temperatures are sufficiently cool),

and excessive solar heat gain through the windows.

The overarching recommendations from this key component of the Energy Audit are presented below.


Figure 10 Outdoor Units Installed Under the Beam

4.2.2.2 HVAC Recommendations and Energy Conservation Opportunities

Gymnasium The temperature set point to be increased from the present level of 20⁰C.

There is heavy heat ingress from the glass on from both the sides of the gym. Proper

insulation using Spectrally Selective Window Films will reduce heat load and thereby lead to

substantial savings. After the implementation of the recommendation, tower ACs might not

be required.

Inspite of the low temperature of 20⁰C in the gym, there were complaints of low cooling.

We recommend a mild draft of air in the room which will tend to give a “feel good effect” to

the members. This can be achieved through installation of floor fans at strategically placed

locations based on consultation with regular occupants.

There is heat ingress every time the gym entrance door is opened by the members for entry.

However considering the fact that there is no provision for fresh air inlet inside the gym, this

loss needs to be overlooked.

Presidential Hall All the outdoor field units have been installed under the beam which is hampering the flow

of hot air. A duct needs to be provided to guide the air flow such as the beam does not

obstruct the free blow of the hot air.


Figure 11 Ducts for Hot Air

For Squash Court, Melting Pot Restaurant, Ballantine Bar, Table Tennis Department, Badminton Court and Billiards Room Inefficiency of the equipment and and/or poor cooling in these spaces might be due to

significant obstructions to air flow in the air handling ducts. Upon field investigation it was

learnt that these ducts have likely never been cleaned or undergone rigorous maintenance

since initial installation. It is recommended that this be undertaken immediately through

professional duct-cleaning services to harness low-hanging fruit opportunities for energy

savings without any capital investment.

All inefficient Packaged AHU and Ductable ACs of Melting Pot Restaurant, Squash Court and

Billiards Room must be replaced with Hybrid Direct-Indirect Evaporative Cooling Packaged

AHU system. Details about the recommended replacement solution (TORO Cooling Solutions

Hybrid AC Technology) are presented in Annexure 1. The comprehensive technical,

environmental and payback period assessment of this proposed intervention is presented in

Table 17 below.

For Yoga Room and Card Room All the inefficient split ACs of the Yoga and Card Room should be replaced with 5-Star Rated

ACs . The comprehensive technical, environmental and payback period assessment of this

proposed intervention is presented in Table 17 below.

For all Packaged Air Conditioners The insulation of the copper pipes from the outdoor units to the indoor units has been

deteriorated. There is heavy condensation and water retention in the insulation leading to


Figure 12 Detoriated Insulation Copper Pipes

Figure 13 Overlapping Wires

losses. With the replacement of the old insulation, rooms will get cooler faster and the set

point cutoff temperature will be reached earlier, thereby saving electrical energy.

For all Units Rated 5 TR and above In addition to the above mentioned points, it is necessary that meticulous and timely

routine maintenance helps effective capacity utilization and hence power consumption

close to optimal. This involves regular monitoring of gas pressures and refills if necessary,


cleaning of filters and washing of radiator fins of the outdoor units. All the above measures

would lead to estimated energy savings of about 2% based on the experience. The energy

and cost savings analysis for this is presented in Table 17 below.

For all Units Rated less than 5 TR All 2 TR Cassette and Split ACs that are functioning at a EER (Energy Efficiency Ratio) of less

than 3 Star and/or are more than 5 years old are recommended for immediate replacement

by 5 Star-rated ACs

Electronic energy savers are available in the market, which work on the principle of acting as

an override over the built in thermostat to use up energy storage in the cooling coils to turn

down frequent cycling of compressor thereby saving energy consumption. The

manufacturers claim 25% to 30% energy savings. Here, to be on the conservative side,

energy saving of 10 % is considered.

The total benefits that will accrue to Khar Gymkhana from the proposed improvement are summarized in Table 16 below. The subsequent Table 17 provides details of the analysis conducted for each Air Conditioned space warranting an Energy Audit review to arrive at the potential for annual energy savings from HVAC system efficiency improvements.

Table 16 Overall HVAC Energy and Cost Conservation Summary

Parameter Value Units

Capital Cost 1,03,42,277 INR

Energy Conservation 4,15,807 kWh/year

Demand Reduction 33.5 kVA

GHG Mitigation 519.8 MT CO2e

Cost Savings 63,46,307 INR/year

Payback Period 1.9 year

Assumptions: Energy Cost = 13.25 Rs./kWh Excess Demand Penalty Charges = 300 Rs./kVa/month GHG Emission Factor for Electricity in India (including T&D Losses) = 1.25 kg CO2e/kWh Power Factor of all AC equipment = 0.75

Table 17 HVAC Environmental and Cost Savings Estimate from HVAC Equipment Replacement, Retrofit & Maintenance

BAU BAU BAU BAU Interv. Interv. Savings

Scenario Rated Cap. (TR)

Nos. of Units

hrs./yr Eff. (EER)

Eff. (EER)

Capital Cost (Rs.)

Cost Savings - Energy & Penalty (Rs./yr.)

Payback Period (yrs.)

Energy Conserv. (kWh/yr.)

GHG Mitig. (MT CO2e/yr.)

Yoga Room 2 2 1927 2.44 3.40 1,31,960 49,199 2.68 3,126 3.91

Melting Pot Rest. 20 1 2409 1.70 4.62 12,85,714 9,59,782 1.34 62,967 78.71

Billiards Room 20 1 2409 2.08 4.62 12,85,714 6,82,215 1.88 44,757 55.95

Card Room 2 1 1927 1.56 3.40 65,980 73,931 0.89 4,697 5.87

Card Room 2 1 1927 1.69 3.40 65,980 63,409 1.04 4,028 5.04

Squash Court 20 1 2409 1.70 4.62 12,85,714 9,59,782 1.34 62,967 78.71

Ballantine Bar 20 1 2409 2.65 4.62 12,85,714 4,15,122 3.10 27,234 34.04

Table Tennis Dept. 20 2 2409 2.45 4.62 25,71,429 9,89,371 2.60 64,909 81.14

Badminton Court 20 1.5 2409 1.70 4.62 19,28,571 14,39,672 1.34 94,451 118.06

Maint. Improv. (Large ACs)

20 10 2409 4.06 4.06 0 1,10,601 0.00 8,347 10.43

Energy Saver Retrofit (Small ACs)

2 67 1927 2.37 2.63 4,35,500 6,03,224 0.72 38,323 47.90

Total / Avg. 1,03,42,277 63,46,307 1.93 4,15,807 519.8

4.2.3 Lighting System

4.2.3.1 Lighting System Performance Assessment

The 2nd most critical load imposed on the energy system at the facility is the Lighting Load. The lighting load across the facility is 210.4 kW. Lighting is an essential service required by occupants of indoor and outdoor spaces and is designed to perform and functional and aesthetic role as per specific requirements that are addressed during the lighting system design phase. The intensity levels [lux] required by occupants vary with application and area of usage. There are recommendations provided by the BEE to evaluate the efficacy of the lighting installed in spaces as a function of use cases. Based on these recommendations Installed Load Efficacy Ratios [ILER] have been calculated and listed in Table 18 below for major indoor areas of the facility. The table also indicates a priority list of areas that need immediate attention to achieve immediate energy and cost reduction.

Table 18 ILER Based Assessment of Area wise Lighting

Area Actual ILER Assessment

Gym 0.14

Gents Health Club Locker 0.12

Yoga Room 0.56

Pavilion Restaurant 0.07

Squash Court 0.22

TT Department 0.45

Black Dog 0.11

Badminton Court 0.28

Badminton Court Gents Changing Room 0.11

Badminton Court Ladies Changing Room 0.1

Basement Passage 0.03

1st Floor Card Room 0.34

Billiard Room downside 1.27

1st Floor Bar 0.028

ILER Assessment Color

0.75 or more Satisfactory / Good

0.51 - 0.74 Review Suggested

0.5 or less Urgent Action Required

Commonly encountered Reasons for Low ILER are the following:

Use of low efficacy lamps

Less efficient luminaries


Improper layout of fittings

Usage of high lux levels as compared to the recommended guidelines

Usage of low efficacy lamps and improper selection of lux levels / improper layout seems to be the most common reason for low ILER in the Gymkhana. Lighting technology advancement since the advent of CFL, LED bulbs provide opportunities for significant energy savings through equipment replacement. A listing of high energy efficiency lighting devices and their respective efficiency attributes (lumens/watt) is provided in Table 19 below.

Table 19 Lamp Efficiency Metrics

Type Lumen / Watts

PL 60

FTL 25

Bulb 15

CFL 60

Halogen spot light 25

LED 75

T5 25

Metal Halide 75

Halogen FL 80

Extensive field measurements with Lux Meters were carried out through out the indoor and outdoor spaces of the facility and these measurements and primary analysis is tabulated in Annexure 2. A summary of the lighting fixture types that comprise the lighting load, the respective load, and their consequent energy consumption is presented in the Table 20 below:

Table 20 Fixture-Wise Lighting Load and Energy Consumption Summary

Fixture Type Qty. Load (kW) Energy Cons. (kWh/yr.)

Energy Cost (Rs./yr)

PL Lamp 1,263 22 61,854 8,19,570

CFL 133 3 4,738 62,784

LED 236 4 12,255 1,62,372

Metal Halide Lamps 380 122 1,69,506 22,45,955

Halogen 198 19 37,714 4,99,706

FTL 795 32 1,24,555 16,50,351

T5 Tube 187 4 11,305 1,49,788

GLS Lamp 57 3 13,410 1,77,684

Total 3,249 210.43 4,35,337 57,68,210

The assessment indicates that Khar Gymkhana has 3,249 lighting fixtures leading to an annual energy consumption of approximately 4.35 lakh units of electricity and leading to an energy cost of INR 57.7 lakh per year. The majority of the load comprises of energy


Figure 14 Metal Halide Lamps Used at the Tennis Court

intensive Metal Halide Lamps used at the Tennis Courts and Cricket Ground, followed by the Fluorescent Tube Lights and PL Lamps used across the facility.

It is noteworthy that approximately 10% of the lighting load of the facility is comprised of highly inefficient GLS Lamps and Halogen Spotlights which also have a very short lifespan and require frequent replacement. This distribution of lighting load by fixture type is provided in Figure 15 below.


Figure 15 Lighting Load Fixture Type-wise Distribution

The assessment also allowed for lighting load to be determined per physical area of the facility. This distribution by area is presented in the Table 21 and Figure 16 below. The analysis indicates that a majority of the lighting load (80% of total load) is generated by the following areas of which the Tennis Court and Cricket Ground comprise a majority of the load (57% of the total facility’s load):

Tennis Court

Cricket Ground

4th Floor Gym

4th Floor Terrace

Squash Court

Badminton Court

Lobbies and Staircases

Melting Pot Restaurant

CFL1.3%

FTL15.2%

GLS Lamp1.6%

Halogen9.3%

LED2.0%

Metal Halide Lamps57.9%

PL Lamp10.7%

T5 Tube0.8%

T8 Tube1.2%

Khar Gymkhana Energy Audit - Fixture Type-Wise Lighting Load Distribution

CFL

FTL

GLS Lamp

Halogen

LED

Metal Halide Lamps

PL Lamp

T5 Tube

T8 Tube

Total Lighting Load = 210.43 kW


Table 21 Area-Wise Lighting Load and Energy Consumption Summary

Area Name Qty. Load (kW) Load % Energy Cons. (kWh/yr.)

Energy Cost (Rs./yr)

Tennis Court 272 87.04 41.4% 1,32,373 17,53,947

Cricket Ground 104 33.28 15.8% 35,429 4,69,439

4th Floor Gym 306 9.96 4.7% 18,170 2,40,749

4th Floor Terrace 49 8.81 4.2% 3,215 42,598

Squash Court 278 8.17 3.9% 38,776 5,13,784

Badminton Court 180 7.35 3.5% 42,936 5,68,898

Lobbies and Staircases 256 5.95 2.8% 11,845 1,56,946

Melting Pot Restaurant 108 5.88 2.8% 22,539 2,98,641

T/T Dept. 158 5.54 2.6% 18,186 2,40,961

Ladies Spa & Saloon 120 4.19 2.0% 14,857 1,96,855

Pavilion Restaurant 90 4.01 1.9% 12,432 1,64,723

Basement 117 3.95 1.9% 24,758 3,28,043

Swimming Pool 225 3.71 1.8% 6,608 87,555

Presidential Hall 153 3.18 1.5% 6,960 92,218

Card Room 200 2.47 1.2% 6,306 83,551

Black Dog Bar & Restaurant 85 2.28 1.1% 4,159 55,109

Gents Health Club 86 2.02 1.0% 7,827 1,03,709

Billiards Room 55 1.97 0.9% 4,681 62,022

Old Table Tennis Dept. 41 1.65 0.8% 4,509 59,740

Terrace Outdoor Gym 4 1.60 0.8% 1,703 22,569

Conference Room 28 1.20 0.6% 1,971 26,116

Reception Lobby 62 1.03 0.5% 2,619 34,705

Library Dept. 44 0.98 0.5% 1,255 16,622

Main Gate 28 0.68 0.3% 1,245 16,492

Yoga Room 36 0.65 0.3% 710 9,402

Accounts Dept. 16 0.58 0.3% 2,733 36,214

1st Floor Bar 27 0.50 0.2% 1,099 14,567

Tennis Club 18 0.44 0.2% 639 8,473

Main Office Dept. 32 0.35 0.2% 1,413 18,726

1st Floor Passage 8 0.31 0.1% 1,452 19,239

Fitness Zone & Passage 16 0.29 0.1% 420 5,571

Trustee Office 24 0.26 0.1% 1,060 14,044

Cyber Cafe 10 0.08 0.0% 321 4,256

Ballantines Bar 13 0.07 0.0% 130 1,729

Total 3,249 210.43 100% 4,35,337 57,68,210


Tennis Court41.4%

Cricket Ground15.8%

4th Floor Gym4.7%

4th Floor Terrace4.2%

Squash Court3.9%

Badminton Court3.5%


2.8%


2.8%

Others20.9%

Khar Gymkhana Energy Audit - Area-Wise Lighting Load Distribution

Tennis Court

Cricket Ground

4th Floor Gym

4th Floor Terrace

Squash Court

Badminton Court



Others

Total Lighting Load = 210.43 kW

Figure 16 Lighting Load Area-wise Distribution

4.2.3.2 Lighting Recommendations and Energy Conservation Opportunities

Table 22 to Table 28 below provide area wise annual energy cost saving possibilities by usage of High Efficacy Lamps and reduction in Lux (swimming pool pathway & staircase landings in new building), for indoor and outdoor spaces, respectively. There are also immediate energy savings possible through direct removal of excess lighting in various spaces of the facility; these are also analyzed and presented in the tables below. Savings in outdoor locations is based on usage of High Efficacy LED Lamps to replace the existing Metal Halide Lamps. Recommendation of new lighting scheme for Tennis Courts and Cricket ground and Details of the recommended high efficiency lighting system for the Tennis Courts and Cricket Ground are presented in Annexure 2. The specific lighting load recommendations for immediate implementation are as follows:

Table 22 Light Fittings to be removed

Area Reference Qty, Type & Wattage Removal Qty. (Nos.)

New Bldg. - 8th Floor Terrace lobby 11 Nos., 11 W , PL Lamps 6

New Bldg. - 7th Floor Ballantine Bar Lounge Entrance Mumbai

21 Nos., 12V, 50 W, Halogen Spotlights

17

New Bldg. – 5th Floor Squash Court & Hall Lobby 12 Nos., 1 x 36 W FTL 12


Cove Fittings

Old Bldg. – Reception Lobby Area 24 Nos., 2 x 18 W, PL Lamps 6

Table 23 List of Light Fittings to be replaced with High Efficiency Lights

Area Reference

Existing Fittings Recom. Fittings

Qty, Type & Wattage Qty, Type & Wattage

Outdoor Cricket Stadium 52 Nos., 2 x 320 W, Metal Halide Lamps

40 Nos., 180 W LED, Floodlights

Outdoor Tennis Court - A 64 Nos., 2 x 320 W, Metal Halide Lamps

64 Nos., 180W LED Floodlights

Outdoor Tennis Court - B 72 Nos., 2 x 320 W, Metal Halide Lamps

64 Nos., 180 W LED Floodlights

New Bldg. – 4th Floor Terrace (Opposite Squash Hall)

8 Nos., 1000 W, Halogen

5 Nos., 180 W LED Flood lights

New Bldg. – 8th Floor Terrace Outdoor Gym

4 Nos., 400 W, Metal Halide Lamps

4 Nos.,120 W LED Flood lights

New Bldg. – Ground Floor Pavillion Restaurant side lobby and lift lobby

8 Nos.,12V, 50 W, Halogen Spotlights 8 Nos., 21 W

Table 24 List of Light Fittings to be reduced in Wattage

Area Reference

Existing Fittings Recom. Fittings

Qty, Type & Wattage Qty, Type & Wattage

Swimming Pool Pathway Lights

10 Nos., 20 W, CFL Bay Lights

10 Nos., 10 W CFL Bay Lights

New Bldg. – 4th Floor Terrace (Opposite to Squash Hall)

35 Nos., 20 W, CFL Bay Lights

35 Nos., 10 W CFL Bay Lights

Table 25 Lighting Cost Savings Estimate from Equipment Replacement (Indoor)

Location ANNUAL

Wastage based on ILER [Rs.]

Gym 3, 31, 121.00

Squash Court 2, 31, 326.00

TT 58, 758.00

Misc. 1, 89, 081.00

TOTAL 8,10, 286.00

Table 26 Lighting Environmental and Cost Savings Estimate from Equipment Replacement (Outdoor) BAU BAU BAU Interv. Interv. Savings

Scenario Details Rated Capacity (lumens)

hrs./yr Eff. (lum/kW)

Eff. (lum/kW)

Capital Cost (Rs.)

Cost Savings – Energy & Penalty (Rs./yr.)


Energy Conservation (kWh/yr.)


Pavillion Rest. Lobby and Lift Lobby

Halogen to LED 1,050 1,825 21,000 78,000 21,951 8,238 2.66 533 0.7

Cricket Ground Metal Halide to LED

14,769 1,065 46,154 85,567 23,92,728 4,33,094 5.52 25,465 31.8

Tennis Court A Metal Halide to LED

14,769 1,521 46,154 85,567 38,28,365 6,27,529 6.10 39,516 49.4

Tennis Court B Metal Halide to LED

14,769 1,521 46,154 85,567 38,28,365 7,51,180 5.10 47,303 59.1

4th Floor Terrace Halogen to LED 21,000 365 21,000 85,567 5,01,906 53,341 9.41 2,203 2.8

8th Floor Terrace Outdoor Gym

Metal Halide to LED

18,462 1,065 46,154 85,567 2,86,596 13,344 21.48 785 1.0

Overall Replacement T12 to T5 Tubelights

1,944 3,203 54,000 72,000 12,13,740 2,56,226 4.74 17,672 22.1

Overall Replacement T12 to T5 Tubelights

2,916 5,442 54,000 81,000 9,72,643 2,43,852 3.99 17,437 21.8

Overall Replacement GLS Lamp to CFL Bulbs

840 3,935 14,000 60,000 71,867 1,42,021 0.51 9,955 12.4

Pavillion Rest. Lobby and Lift Lobby

Halogen to LED 1,050 1,825 21,000 78,000 21,951 8,238 2.66 533 0.7

Total / Avg. 1,31,18,159.9 25,28,824.3 5.8 1,60,869.8 201.1


Table 27 Lighting Environmental and Cost Savings Estimate from Wattage Reduction BAU BAU BAU Interv. Interv.

Scenario Details Rated Capacity (lumens)


Eff. (lum/kW)

Capital Cost (Rs.)





4th Floor Terrace 20 W to 10 W CFL 1,200 365 60,000 60,000 0 3,093 0.00 128 0.2

Swimming Pool Path. Lights 20 W to 10 W CFL 1,200 2,008 60,000 60,000 0 3,060 0.00 201 0.3

Total / Avg. 0.0 6,152.6 0.0 328.5 0.4

Table 28 Lighting Environmental and Cost Savings Estimate from Equipment Removal

BAU BAU BAU Interv. Interv.

Scenario Rated Capacity (lumens)


Eff. (lum/kW)

Capital Cost (Rs.)





5th Floor Squash Court & Hall Lobby

Removal of 12 T12 Lights

1,944 2,008 54,000 54,000 0 13,219 0.00 867 1.1

7th Floor Ballantine Bar Lounge Entrance

Removal of 17 Halogen Lights

1,050 2,008 21,000 21,000 0 26,009 0.00 1,706 2.1

8th Floor Terrace lobby Removal of 6 PL Lamps

660 1,825 60,000 60,000 0 1,860 0.00 120 0.2

Reception Lobby Area Removal of 6 PL Lamps

1,080 2,677 60,000 60,000 0 4,262 0.00 289 0.4

Total / Avg. 0.0 45,350.7 0.0 2,983.1 3.7

The overall conservation summary from lighting equipment replacements, reduced wattage, and equipment removal is presented in the table below.

Table 29 Overall Lighting Energy and Cost Conservation Summary


Capital Cost 1,31,18,159.92 INR

Energy Conservation 1,64,181.44 kWh/year


GHG Mitigation 205.23 MT CO2e/year

Cost Savings 25,80,327.64 INR/year


4.2.4 Ventilation System

The facility employs an Air Blower based ventilation system in the Melting Pot and Ground Floor Pavilion Restaurant Kitchen areas. Details of this system are presented in Table 30 below. This system contributes a load of approximately 22.4 kW to the facility’s total electric load. The Energy Audit process identified modest possibilities for reducing energy consumption from this system through changes in operational processes.

Table 30 Blower System Details & Measurement

Area Fan Motor Details Recorded System Parameters

Restaurant Kitchen [7th Floor: Melting Pot Rest.]

Air Blowers (Exhaust) ---> 2 Nos. [Both run simultaneously] Make: Crompton Greaves KW / HP : 7.5 / 10 RPM : 970 Insulation Class : F Full Load Amps : 15 Efficiency [FL] : 87.5% Duty :S1

Motor Power: KW: 5.84 + 6.98 = 12.82 Amp. R / Y / B: 23.8 / 24.7 / 26.0 Volts R / Y / B: 396 / 398 / 397

Air Blowers (Supply) ---> 1 Make: Crompton Greaves KW / HP : 3.7 / 5 RPM : 1440 Efficiency [FL] : 85% Frame : ND112M Duty : S1 Insulation Class : F

Motor Power: KW: 2.06 Amp. R / Y / B: 4.0 /4.0 / 3.9 Volts R / Y / B: 396 / 398 / 397 Fresh Air Intake Fan Avg. Wind Speed: 8.3 m / s Area: 0.0729 m2 Running Hours: 10 hrs / Day

Restaurant Kitchen Gr. Floor Pavilion Restaurant

Air Blowers (Exhaust) ---> 1 No. Make: Crompton Greaves KW / HP : 7.5 / 10 RPM : 970 Efficiency [FL] : 87.5% Amperes : 15 Frame : ND160M Duty : S1 Insulation Class : F

Motor Power: KW: 5.45 Amps. R / Y / B: 10.7 / 10.4 / 10.9 Volts R / Y / B: 394 /390 / 393

NOTE: Supply fan details assumed to be same as supply fan motor of “Melting Pot” Kitchen. Also the power recorded is assumed to be same as that of Melting Pot Restaurant Kitchen since supply could not be traced


Figure 17 Air-Blower Based Ventilation System


Opportunities for energy savings from altering system operation were identified as part of the Energy Audit. The supply and exhaust fans are used in tandem to provide for ventilation in the Kitchen areas mentioned above. It was observed that the fan run most of the time including during period of low level of activity in the kitchens. It is recommended that the facility management identify means through which these Air Blowers can be switched off when the kitchen areas are either completely devoid of occupancy or have minimal occupancy during off-service hours. Even if the fans remain out of operation for two hours per day, notable energy conservation could be achieved as outlined in Table 31 below.

Table 31 Air Blower (Ventilation System) Environmental and Cost Savings Estimate from Operational Run-time Reduction

Scenario Rated Capacity (kW)

Operation Hours/Day

% Savings. Energy Savings. (kWh/yr.)

Total Cost Savings (Rs./yr.)


Melting Pot Restaurant – Exhaust Motor

12.82 10 -> 8 20% 9,359 1,24,001 11.70

Melting Pot Restaurant – Supply Motor

2.06 10 -> 8 20% 1,504 19,925 1.88

Pavillion Restaurant – Exhaust Motor

5.45 10 -> 8 20% 3,979 52,715 4.97

Pavillion Restaurant - Supply Motor

2.06 10 -> 8 20% 1,504 19,925 1.88

Total 16,345 2,16,567.3 20.4

The assessment indicates that reducing the operational run-time of the exhaust and fresh air supply side motors by 2 hours/day could yield annual energy savings of 16,435 kWh, reduce demand by 6 kVA, and lead to a reduced annual energy bill by 2.17 lakh.

4.2.5 Pumping System

The pumping system at the facility is an essential component of the operations at Khar Gymkhana due to its vital role in enabling the provision of swimming pool, cricket ground (gardening), sauna, sanitation, drinking water and restaurant services at the premises. This section of the Energy Audit report examines the existing performance of the water supply and pumping system and presents the analysis and conclusions of the process of identifying energy and cost savings opportunities through technical enhancement and operational process modifications.


4.2.5.1 Pumping System Performance Assessment

There are 4 separate water connections with individual water supply meters. The water bill details are presented in Table 32 below:

Table 32 Water Bill Details

Month Rate [Rs.] /

Consumption [KL]

Total Charges

[Rs.] Sewerage Charges

[Rs.]

Additional Charges

[Rs.]

Meter No.: HWL 6810000

July-Aug 2013 43.20 / 1302 56, 246.00 33, 748.00 18, 732.00

Aug-Sept 2013 43.20 / 1392 60, 134.00 36,080.00 5, 680.00

May-June 2013 40.00 / 1347 53, 880.00 32, 328.00 Nil

March-April 2012 40.00 / 808 32, 320.00 15, 456.00 Nil

Feb-March 2013 40.00 / 1265 50, 600.00 30, 360.00 Nil

Meter No.: HWI 41200004

July-Aug 2013 43.20 / 757 32, 702.00 19, 621.00 12, 191.00

Sept-Oct 2013 43.20 / 1017 43, 934.00 26, 360.00 Nil

Aug-Sept 2013 40.00 / 1005 43, 416.00 26, 050.00 2, 400.00

May-June 2013 40.00 / 750 30, 000.00 18, 000.00 Nil

March-April 2012 40.00 / 644 25, 760.00 15, 456.00 Nil

Feb-March 2013 40.00 / 858 34, 320.00 11, 976.00 Nil

April-May 2013 40.00 / 499 19, 960.00 11, 976.00 Nil


July-Aug 2013 4.32 / 104 428.00 257.00 Nil

Oct-Nov 2013 4.32 / 757 480.00 288.00 27.00

April-May 2013 4.323 / 103 412.00 247.00 Nil


Feb-March 2013 40.00 / 165 6, 600.00 3, 960.00 Nil

May-June 2013 40.00 / 163 6, 520.00 3, 912.00 Nil

June-July 2013 43.20 / 164 6, 717.00 4, 030.00 Nil

July-Aug 2013 43.20 / 126 5, 443.00 3, 226.00 2, 041.00

The water consumption summary is presented in Table 33 below. The analysis indicates an average monthly water consumption of 2308.5 KL (i.e 23 lakh litres of water per month).


Table 33 Water Consumption Summary





Month Consumption [KL] Consumption [KL] Consumption [KL] Consumption [KL] Total (KL)

Mar-Apr 2012 808 644 Incomplete data

Feb-Mar 2013 1265 858 165 2288

Apr-May 2013 499 103 Incomplete data

May-Jun 2013 1347 750 163 2260

June-July 2013 164 Incomplete data

July-Aug 2013 1302 757 104 126 2289

Aug-Sept 2013 1392 1005 2397

Sept-Oct 2013 1017 Incomplete data

Oct-Nov 2013 757 Incomplete data

Average = 2308.5 KL

The Energy Audit process led to the following observations related to the pumping systems and operational processes associated with pumps:

Pumping Systems for Building Main Tank There are two underground (UG) tanks, each with approx. 20 KL capacity and eight overhead (OH) tanks with capacities varying from 8 KL to 10 KL. The overhead tanks do not overflow. Approximate water pumped up to the O/H water tanks is 50 KL + 20 KL + 2.85 (2 tankers per week) = 72.85 KL per day i.e. 2185.50 KL, which is comparable with the metered water consumption. The municipal water supply is from 17:30 to 21:00 PM. Water pumping takes place from U/G tanks to O/H tanks during the following periods:

17:30 to 21:00 PM at the TOD B tariff rate: Rs 1.00 extra per kWh

9:00 to 11:00 at the TOD A tariff rate: Rs 0.50 extra per kWh

A basic assessment of the increased energy cost of operating the water pumping system during peak hours is presented below: Power measured at one of the 5.5 KW pump is governed by the following equation:

Power Consumption = √3𝑥 𝑉 𝑥 cos 𝛷 𝑥 𝐼 for Phase Voltage = 400 Volts, power factor cos 𝛷 = 0.75, and current (I) reading of 6.7 Amps, the resulting power consumption is 3.48 KW Pumping hours (evening 3.5 hrs): Units 3.48 x 3.5x 30 days = 365.40 per month Pumping hours (morning 2 hrs): Units 3.48 x 2.0 x 30 days = 210.0 per month


Extra paid on account of TOD B = 365.40 x 1.00 = Rs. 365.40 Extra paid on account of TOD A = 210.00 x 0.50 = Rs. 105.00 Rs 470.00 paid extra on pumping per month. Yearly extra charges are estimated at Rs. 5,640.00 If water pumping could be avoided during peak hours electricity charges could be saved as shown in the illustration above. There could be many such loads which exhibit the possibility of avoiding operating them during high TOD charges to avoid extra electricity charges. The facility management team is urged to identify all such key opportunities to achieve immediate energy and cost conservation. Swimming Pool The swimming pool pumping system was exhaustively studied and the resulting details are provided in Table 34 to Table 36 below.

Table 34 Swimming Pool Pump Technical Specifications

Swimming Pool Filtration Plant

Pump Motor 1

Make : Kirloskar Brothers

Ltd.

Head [m] : 19.5

Head Range [m] : 14 0 – 22

Capacity Range [LPS] : 25 0 – 16

KW / HP : 5.5 / 7.5

RPM : 2900

Efficiency3 : 61.0 %

Discharge [LPS] : 20

Amperes : 11.4

I/P KW : 6.5

Pump Motor 2

Make : Kirloskar Brothers

Ltd.

Head [m] : 25

Head Range [m] : 18 0 – 33.6

Capacity Range [LPS] : 32 0 – 18.0

KW / HP : 9.0 / 12.0

RPM : 2900

Efficiency : 63.0 %

Discharge [LPS] : 36

Amperes : 18.0

I/P KW : 11

Chlorine Mixture

Motors Qty : 2 Nos.

HP / KW : 2 / 1.5

RPM : 1430

Ampere : 3.4

Ozone Mixture

Motor Qty. : 1 No.

Nameplate Data : Not Available

3 It was not clear from the nameplate whether these efficiencies (~ 63%) are the overall efficiency of the monoblock pump system (i.e. inclusive of motor efficiency) or the hydraulic efficiency of the pump itself. Since usual overall efficiencies for monoblock pumps are expected to be in the range of 50%, it was deemed that these higher efficiency values are the hydraulic efficiency of the pump (i.e. shaft power to hydraulic power efficiency).


Table 35 Swimming Pool Pump Working Schedule

Working Hours

Morning : 06.00 A.M. to 09.00 A.M. : 7.5 HP Pump Morning : 09.00 A.M. to 03.00 P.M. : 12.0 HP Pump Afternoon 03.00 P.M. to 04.00 P.M. : 7.5 HP Pump Afternoon 04.00 P.M. to 10.00 P.M. :12.0 HP Pump

Table 36 Swimming Pool Pumps Flow Measurements & Pipe Details

Flow Measurements

7.5 HP Pump

Flow : 54.41 m3 / Hr

Velocity : 0.86 m / s

Signal Strength : 545, 586

Signal Quality : 35

Discharge Pressure : 0.80 Kg/cm²

12 HP Pump

Flow : 94.32 m3 / Hr

Velocity : 1.49 m /s

Signal Strength : : 574, 608

Signal Quality : 39

Discharge Pressure : 0.95 Kg/cm²

Pipe Details

Pipe Material : PVC Circumference of Pipe : 532 mm

Pipe Outer Diameter :160 mm Pipe Inner Diameter : 140 mm

Pipe Thickness : 20 mm

The two major pump for the swimming pools demonstrate potential for energy saving. Observations revealed that there are excessive bends on the discharge pipeline adding headloss to the system which eventually increases energy consumption by the pump to overcome this additional energy loss. It was noted that approximately 3 bends could be eliminated. Furthermore, there are about 8 to 9 (90 degree bends) on the discharge pipe line. The pressure drops at the bends for both pumps were calculated and presented below.

Table 37 Pressure Drop Calculation - 12.0 HP Pump

Flow Medium : Water 20 °C / liquid

Volume Flow : 94.32 m3 / h

Weight Density : 998.206 kg / m³

Dynamic Viscosity : 1001.61 10 – 6 kg / ms

Element of Pipe : Bend of segments

Dimensions of Element : Diameter of Pipe D: 140 mm

Angle (Degree) : 90

Velocity of Flow : 1.7 m / s

Reynolds Number : 237468

Flow : Turbulent

Resistance coefficient : 0.25

Pressure Drop : 3.61 mbar


Table 38 Pressure Drop Calculation – 7.5 HP Pump

Flow Medium : Water 20 °C / liquid

Volume Flow : 54.41 m³/h

Weight Density : 998.206 kg/m³

Dynamic Viscosity : 1001.61 10-6 kg/ms

Element of Pipe : Bend of segments

Dimensions of Element : Diameter of Pipe D: 140 mm

Angle w in Degree: 90

Velocity of Flow : 0.98 m/s

Reynolds Number : 136987

Flow : turbulent

Resistance Coefficient : 0.25

Pressure Drop : 1.2 mbar

The cumulative pressure drop due to bends on each of the pump discharge lines is calculated to be as follows: 12 HP Pump : 8 x 3.61 m Bar = 28.88 m Bar (0.029 Bar) 7.5 HP Pump : 8 x 1.2 m Bar = 09.60 m Bar (0.009 Bar) The key purpose of the baseline performance assessment of the pumping system was to determine its baseline energy consumption and the actual operational efficiency relative to the rated efficiency and input power of the system. This analysis was conducted through measurement of electrical parameters at the motor input and measurement of discharge pressure and flowrate using ultrasonic flowmeters. The outcome of this pumping system baseline performance assessment is presented in Table 39 below.

Table 39 Pumping System Efficiency Calculations

Sr.No Pump ID Flowrate (m3/h)

Rated Pump BHP (hp)

Measured Input Power (kW)

Nameplate Hydraulic Eff. (%)

Total Head (m)

Hydraulic Power (kW)

Hydraulic Eff. (%)

Motor Eff.(%)

Overall Eff. (%)

Measured System Parameters Calculated Parameters

1 12 HP 94.3 12.0 10.20 63.0% 13.110 3.364 42.55% 77.47% 32.97%

2 7.5 HP 54.4 7.5 6.82 61.0% 13.110 1.940 34.39% 82.67% 28.43%

Total 148.7 19.5 17.02 5.304

The above assessment indicates that the hydraulic efficiency of the system is significantly lower than the nameplate efficiency of the system which was noted as being 63 % and 61% for the 12 HP and 7.5 HP pump, respectively. As a result, the overall efficiency of the pumps has greatly diminished from the anticipated range of 48 % to 50% to the measured efficiency of 28.4 % to 33.0% for the two pumps.


4.2.5.2 Pumping System Recommendations and Energy Conservation Opportunities

The avoidable energy consumption from the 12 and 7.5 HP Pump Operation by removal of additional bends (which leads to higher pressure drops requiring more pumping energy.) is presented below. The additional hydraulic power required is assessed below through the following governing equation:

PH = 𝑞 𝑥 𝛿 𝑥 ∆ℎ 𝑥 𝑔

3.6 𝑥 106

Where; PH = pump power (kW) q = flowrate (m3/h) 𝛿 = density of fluid (kg/m3) ∆ℎ = differential head (m) g = gravity (9.81 m/s2)

The flow parameters, respective hydraulic power and annual energy savings assessment is presented in Table 40 below:

Table 40 Piping System Energy and Cost Saving Opportunities from Removal of Pipe Bends

Pump ID

Flowrate (m3/h)

Differential Head (bar)

Hydraulic Power (kW)

Shaft Power (kW)

Demand Reduction (kVA)



Energy Cost Savings (Rs./yr.)

Penalty Cost Savings (Rs./yr.)

Total Cost Savings (Rs./yr.)

12 HP 94.3 0.029 0.076 0.231 0.308 1,012 1.3 13,415 1,110 14,525

7.5 HP 54.4 0.009 0.014 0.048 0.064 209 0.3 2,767 229 2,996

Total 148.7 0.090 0.279 0.372 1,221 1.53 16,182 1,338 17,520

The above analysis was based on the following assumptions: - Overall system efficiency (to convert hydraulic to input) is ~ 33% and 29% for the 12

HP and 7.5 HP pumps systems respectively.

- The power factor of the pump motors is 0.75

- Energy cost is 13.25 Rs./kWh

- Excess demand penalty charges are Rs. 300/kVA/month

- Operation hours are 12 hrs./day

- GHG Emission Factor for electricity is 1.25 kg CO2e/kWh

In addition to addressing the issue of excessive pipe bends, more significant opportunities for energy and cost conservation was analyzed by means of studying the existing overall pumping system efficiency and determining its deviation from design efficiency. A preliminary review of the system also alluded to the possibility of achieving energy savings by altering the existing system of operating the 7.5 HP and 12 HP pumps sequentially (as indicated in the pumping schedule table earlier) to a system of two (2) parallel pumps rated at 7.5 HP each which provide the flexibility of operating at 7.5 HP


or 12 HP as required. The existing pumping schematic depicting the current configuration is presented in Figure 18 below:

Figure 18 Swimming Pool Pumping System Schematic

To Pool Pump (12HP)

Pump (7.5 HP) As is evident from the compromised overall efficiency calculated during the baseline performance assessment presented earlier, there are significant opportunities for enhancing energy efficiency and derive significant energy and cost savings through either, a) refurbishing the pump through deep retrofits and repairs, or b) replacing the pumps with hydraulically efficient pumps of a smaller pump BHP rating which can achieve the same hydraulic power while consuming lower input power. The potential pumping related environmental impact and cost savings analysis for a) equipment repair / retrofit (to raise the hydraulic efficiency from the current 42.5 % and 32.4% to the nameplate values of 63% and 61%, or b) pump replacement with highly efficient pumps with hydraulic efficiency of approximately 80%, is presented in Table 41 and Table 42 below. The analysis indicates that the pump retrofit options can conserve 29,712 kWh energy per year leading to a cost savings of approximately INR 4.20 lakhs per year. The one-time repair and retrofit cost for this option is not possible to estimate at this point. Suggestion: Parallel Pumping Currently, the two pumps of different capacities operate in staggered manner according to water pumping needs of the swimming pool as mentioned in the table earlier. The energy conservation analysis presented in the tables below indicates replacement of the existing 12 HP and 7.5 HP pump with high efficiency 7.5 HP and 5 HP pumps as direct

Balancing Tank

Filter

The pump replacement option demonstrates high savings potential. It can

Conserve 40,768 kWh energy per year

Yield a cost savings of INR 5.77 lakhs per year

A payback period of 4 month.

Due to its notable higher annual energy and cost savings compared to merely repairing pumps to restore oroginal efficiency, it is recommended that the management consider replacing the 12 HP and 7.5 HP pumps with high hydraulic efficiency 7.5 and 5 HP pumps pumps with a rated overall system efficiency of 60% or higher.


corresponding replacements. It also possible that that further energy savings are possible through replacing the existing pumps with two (2) 5 HP pumps which can be operated singly when low flowrates are required for 4 hours in the day (i.e. equivalent to the existing 7.5 HP pump operation) and operated in parallel when higher flowrates are required for 12 hours in a day (i.e. equivalent to the existing 12 HP pump operation). This option can be explored further by involving pumping solution providers to provide design feasibility and cost estimates of this 2x5 HP parallel pump syste

Table 41 Pumping System Environmental and Cost Savings Estimate from Equipment Repair and Retrofit


Scenario

Rated Cap. (hyd. power, kW)

hrs./yr Eff. (% overall eff.)

Eff. (% overall eff.)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Swim. Pool 12 HP 3.69 4380 33.0% 50.4% NA 2,40,061 NA 16,949.6 21.2 NA Swim. Pool 7.5 HP 1.99 4380 28.4% 48.8% NA 1,80,860 NA 12,769.7 16.0 NA

Total / Avg. NA 4,20,920.7 NA 29,719.2 37.1 NA

Table 42 Pumping System Environmental and Cost Savings Estimate from Equipment Replacement


Scenario

Rated Cap. (hyd. power, kW)

hrs./yr Eff. (% overall eff.)

Eff. (% overall eff.)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Swim. Pool 12 HP 3.69 4380 33.0% 64.0% 1,22,098.7 3,36,500 0.4 23,758.7 29.7 -8,779.0

Swim. Pool 7.5 HP 1.99 4380 28.4% 64.0% 69,770.7 2,40,905 0.3 17,009.2 21.3 -8,862.0

Total / Avg. 1,91,869.3 5,77,405.4 0.3 40,767.9 51.0 -8,809.2

The overall conservation summary from pump equipment replacements is presented in Table 43 below. Table 43 Overall Lighting Energy and Cost Conservation Summary


Capital Cost 1,91,869 INR

Energy Conservation 40,768 kWh/year



Cost Savings 5,77,405 INR/year


4.2.6 Water Heating System

The majority of the electrically heated water (i.e. for non-cooking purposes) is used are the Gents Health Club for hot water Showers, Jacuzzi, and Sauna steam. Baseline performance assessment and energy conservation opportunities for each of these hot water use activities is presented below.

4.2.6.1 Energy Saving Opportunities from Water Heating System

The facility used 4 Electric Boilers. The recorded power consumption details are provided in Table 44 .

Table 44 Hot Water Shower System Electrical Details

Boiler Details Power Details

Boilers 1 & 2 Capacity: 50 Liters Use Hours: Morning: 4 Hrs. & Evening: 5 Hrs.

Current [A] : 17.5 Voltage [V] : 231 Power [KW] : 4.0 [Single Phase] for both boilers

Boilers 3 & 4 Capacity: 50 Liters Use Hours: Morning: 4 Hrs. & Evening: 5 Hrs.

Current [A] : 17.6 Voltage [V] : 231 Power [KW] : 4.0 [Single Phase] for both boilers

Individual MCB control for Individual Boiler For two boilers, the supply is from one MCB. Even if one boiler is required both the boilers have to be switched ON through the given MCB. Individual boilers may be controlled from individual MCBs so that power is not wasted when both the boilers are not required during lean hours. The lean hours are not known as this information was not available with facility management. However, an expected energy and cost savings was determined based on the following assumptions:

Daily usage: 9 hours per day

Lean hours: 2 hours per day

Approximate heater ON time: 5 minutes for every 20 minutes operation time (20 %

on time)

The energy and cost savings from this alteration is presented in Table 45 below.


Table 45 Hot Water Shower Environmental and Cost Savings Estimate from MCB Retrofit

Baseline Intervention

Scenario Cap. (kW)

hrs./yr Utility hrs./yr

Capital Cost (Rs.)


Payback (yrs.)

Energy Conser. (kWh/yr.)


Hot Water Showers 4.00 821.3 638.8 1,200.0 48,145 0.06 1,460.0 1.8

Use of LPG for Hot Water Shower Heating [in place of Electricity] Approximately, 300 persons take hot water showers each for 4 to 5 minutes. The hot water shower flowrate is assumed to be 4 liters/minute i.e. the total water usage during a single shower is 18 liters4. It is estimated that water is heated from a temperature of 28°C to 50 °C. Replacing the electric heater system with a package LPG boilers offers the possibility of reducing energy cost and GHG emissions for meeting the same thermal heating load. It must be noted here that switching the fuel from electricity to LPG or fuels does not necessarily ‘conserve’ direct energy since the calorific value required from the fuel does not change. However, since electricity generation from thermal fuels (as is the case in India) and transmission and distribution losses involves a high degree of energy loss and low overall fuel efficiency to achieve a given fluid heating purpose, using thermal energy directly to heat fluids does lead to overall life-cycle energy conservation. Furthermore, the thermal fuel-based system used as a replacement can greatly reduce GHG emissions stemming from the increased overall life-cycle energy efficiency. In effect direct heating of fluids on-site with fuels avoids the energy loss and consequent GHG emissions during the process of converting thermal energy to electrical energy in turbines etc. in thermal power plants in India which are usually only 30% energy efficient. The energy and cost savings from this intervention is presented in Table 47 below. Use of LPG for Jacuzzi Room Water Heating [in place of Electricity] The Jacuzzi Room uses hot water pump motors and a boiler defined by the parameters presented below: Pump Motors Qty. : 2 Nos. Rating [HP / KW] : 3 / 2.2 Power measured at the Heating Coil is governed by the following equation:

Power Consumption = √3𝑥 𝑉 𝑥 cos 𝛷 𝑥 𝐼

4 Conventional residential showers have been known to use approximately 8 liters per minute. Applying this flowrate for a 4 to 5 minute shower and 300 total showers split across 4 boilers yielded a daily energy requirement that would require a 4 kW heater to run for more than 24 hours/day. Since this is unreasonable, the liters per minute value was revised to lead to a total heated volume that yields a daily run time of approximately 9 hours as was indicated by facility management staff.


for Phase Voltage = 400 Volts, power factor cos Φ = 0.98, and current (I) reading of 24.96 Amps, the resulting power consumption was calculated to be 16.95 kW. A diagramatic depiction of the Jacuzzi Room Pond and the associated physical dimensions is provided in Figure 19 and Table 46 below.

Figure 19 Khar Gymkhana Jacuzzi Pond Dimensions

Table 46 Jacuzzi Pond Dimensions

Item Area Depth Volume

Inside small tank 1.524 m x 1.189 m 0.4267 m 0.7732 m3

Outside Big tank 1.859 m x 2.103 m 0.4572 m 1.7874 m3

Total

2.5606 m3

Replacing the electric heater system with a package LPG boilers offers the possibility of reducing energy cost and GHG emissions for meeting the same thermal heating load. The following analysis was based on the scenario that water is heated from a temperature of 28°C to 45 °C (i.e. a ΔT = 17°C) and the above quantity of water is heated twice every day and the entire quantity of water is replaced every day. The energy and cost savings from this intervention is presented in Table 48 below.

In addition to equipment replacement for the Jacuzzi Room, it is recommended that the Heater Coil control circuit be repaired or replaced. This equipment is currently dysfunctional and there is no cut-off after set hot water temperature is achieved. This presents an immediate energy savings opportunity as currently excessive energy could be consumed if the attendant does not manually shut off the heating system.

Table 47 Hot Water Shower Heating System Environmental and Cost Savings Estimate from Equipment Replacement BAU BAU BAU BAU Interv. Interv. Interv.

Scenario Rated Cap. (kW)

hrs./yr Electricity GHG EF (kg CO2e/kWh)

Electricity Cost (Rs./kWh)

LPG GHG EF (kg CO2e/kWh)

LPG Cost (Rs./kWh)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Hot Water Showers

3.64 3467.5 1.25 13.25 0.228 6.576 TBD 4,32,152 TBD 0.0 57.3 TBD

Total / Avg. TBD 4,32,152.3 TBD 0 57.3 TBD

Table 48 Jacuzzi Heating System Environmental and Cost Savings Estimate from Equipment Replacement

BAU BAU BAU BAU Interv. Interv. Interv.





LPG Cost (Rs./kWh)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Jacuzzi Water Heat.

15.25 2423.6 1.25 13.25 0.228 6.576 TBD 3,35,078 TBD 0.0 42.0 TBD

Total / Avg. TBD 3,35,078.2 TBD 0 42.0 TBD

Use of LPG for Sauna and Steam Room Heating [in place of Electricity] As in the case of the Jacuzzi Water Heating System, a similar analysis was conducted to determine the potential cost savings from replacing the existing electrical heating system in the Sauna and Steam Room with LPG Boilers. The Steam Power measured at the Heating Coil is governed by the following equation: Power Consumption = 3 𝑥 𝑉 𝑥 cos 𝛷 𝑥 𝐼 (Note: in this equation, V is the Line Voltage and note Phase Voltage as was the case in earlier equations). The Table 49 below provides electrical parameters measured for the 3-Phase electrical system during the Energy Audit and the resulting measured power consumption of the electric boilers.

Table 49 Steam and Sauna Room Power Measurements

Item Current (Amps) Line Voltage (Volts) Power (kW)

R Y B R Y B

Steam Room 23.7 24.8 23.9 231.0 231.0 231.0 9.46

Sauna Room 16.8 24.4 16.5 231.0 231.0 231.0 7.54

Total

17.0

Other operating parameters of Steam and Sauna Room are as follows in Table 50 :

Table 50 Steam and Sauna Room Operating Parameters

Item Parameter

Usage 4 hrs./day

Capacity 5 to 6 persons

Room Volume 11 m3

Rated Heater Capacity 10 kW each

Compared to previous cases of electric heating system replacement, the proposed intervention for the Steam and Sauna room is different. It is proposed that a combination of the existing steam generating heaters be used in conjunction with LPG package boilers. The LPG boilers would be used to heat the water up to 90°C from the ambient and the heated water introduced to the heaters for steam generation. This is due to the fact that the heat required to convert water at 100oC to steam requires a disproportionately higher quantity of energy to provide the Latent Heat of Vaporization of Water and this is best provided by the existing steam generating system. Thus, the LPG system would be primarily used to yield energy cost savings by addressing a partial component of the total heat demand. In order to conduct the energy conservation analysis, the quantity of steam generated daily had to be determined. This was accomplished through the following method:


The Steam Room Heater consumes power continuously unlike Storage Water Heaters.

The electricity consumption of the steam room is therefore 9.46 KW x 4 hours = 37.84

KWH per day => 13,816.0 kWh per year.

37.84 KWH of electricity input = 37.84 x 860 = 32,542 Kcal of heat equivalent.

Heat required for evaporation of 1 Kg of water at atmospheric pressure from 28°C to

steam at 100 °C is (72 + 540) Kcal = 612 Kcal.

Steam generated using 37.84 kWh of electricity = 0.95 x 32,542/ 612 = 50.5 kg steam per

day.

The energy and cost savings from achieving heating of 50.5 liters of water per day from ambient to 90°C using LPG instead of electricity is presented in Table 51 below.

Table 51 Steam Room Heating System Environmental and Cost Savings Estimate from Equipment Replacement






LPG Cost (Rs./kWh)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Steam Room 8.99 149.65 1.25 13.25 0.228 6.576 0.0 20,251 0.0 0.0 1.4 TBD

Total / Avg. TBD 20,251 TBD 0 1.4 TBD

Note: in the above table the annual operating hours are lower than that for 4 hours/day operation. This was because the operating time was normalized to account for only that part of the operation of the steam generator when water is heated from ambient to 90°C. It was determined that this would require operation for only 0.41 hours/day by the 9.46 kW heater.

The overall savings possible from all LPG boiler replacements and other water heating related interventions discussed earlier are presented in Table 52 below.

Table 52 LPG Replacement for Water Heating System - Energy and Cost Conservation Summary


Capital Cost TBD INR

Energy Conservation 1,460.00 kWh/year




Payback Period TBD years

4.2.7 Renewable Energy - Solar Thermal Water Heating System

The facility has access to abundant solar energy through its rooftop surfaces and hence the Energy Audit process explored the possibility of employing Solar Thermal Water Heating to reduce electricity or LPG consumption. Instead of replacing the existing electric water heating system with LPG-based packaged boilers, a significantly more sustainable and cost saving (on a life-cycle project cost basis) alternative would be to replace the system with a Solar Thermal Water Heating System. Thermal Solar systems can supply water at 55°C to 60°C depending on time of year and season. The solar thermal system can replace all water heating application except for the steam generating equipment used for supplying the steam room. The analysis for determining the potential for applying Solar Thermal Heating at the facility required a comprehensive survey of the roof surfaces available to estimate the total unobstructed area that is not influenced by shadows from surrounding structures within or outside the facility (i.e. neighboring buildings etc.). The areas under shadow are not usable for harvesting solar energy. The results of the roof area survey are presented in Table 53 below.

Table 53 Roof Surface Area Survey

Location Area

New Building – 5th Floor 225 + 406 = 631 sq.m.

New Building – 8th Floor 360 + 112 + 41 + 72 = 585 sq.m.

Old Building – 2nd Floor 283 sq.m.

Total 1,499 sq. m = 16,000 sq. ft.

The technical assessment conducted to ascertain the appropriate system size in terms of m2 of collector area (i.e. solar thermal panel area) is presented in below. The analysis of the hot water systems presented earlier indicated a daily hot water load of 10,571 liters per day (lpd) to be heated from approximately 28oC to 50 oC. In order to provide for a higher hot water generating capacity (as might be required during future expansion of the facility), the solar thermal analysis was conducted for a higher system capacity of 12,000 lpd to heat water from 25oC to a weighted average of 60oC (i.e. a temperature rise of 35oC); significantly greater than the current temperature increase of approximately 13oC being achieved by the electric system. The savings analysis presenting however only ascribes the savings calculated from the current energy consumption and not based on the avoided energy consumption of the higher capacity solar thermal system being proposed. This yields a conservative savings and payback period estimate.


Table 54 Solar Thermal Heating System Design


Location Mumbai, India

Mean Monthly Global Solar Radiant Exposure Over India 18.25 MJ/ m2/day

Mean Monthly Global Solar Radiant Exposure Over India 5.069 kWh/m2/day

Avg. Daily Sunshine Hours 4.8 hours/day

Flat Plate Collector Efficiency 55%

T2 (output temperature) 60 0C

T2 (input temperature) 25 0C

Annual Sunshine Days 300 days

Calculations

Equation: Q M x Cp x (T2-T1)

M (mass of water/day) 12000 kg/day

Q (Heat Load) 420000 kCal/day

Solar Collector Area Required 174.5 m2

Avg. Solar Thermal Collector Rated Output 587 W/ m2

Annual SolarThermal Specific Energy Generation 839.5 kWh/ m2/year


The design process led to the conclusion that a 12,000 lpd system would require a 175 m2 collector area (i.e. occupying 1,884 sq. ft.) with a 55% flat-plate collector efficiency and a rated output of approximately 587 W/ m2 that would generated 840 kWh of heat energy/m2/year. This rooftop surface area is much less than the 16,000 sq. ft. area deemed feasible for harvesting solar energy and hence the option is extremely plausible. The type of system suggested is a thermo-siphon type Flat Plate Collector Solar Thermal System. There being many thermal solar manufacturers, lasting performance and sound quality system are essential criterion. Brief specifications for a high quality Thermal Solar System are provided in Figure 20 and Table 55 below and should be adhered to in as far as possible by the Facility Management while procuring the system.


Figure 20 General Specifications for Solar Thermal Storage Tank

Anticorrosive enamel coated insulated

water storage system


Table 55 Solar Thermal Panel Specifications

The energy, positive environmental impact, and cost savings from achieving heating of 12,000 lpd of solar thermal heating to heat water from ambient to 60°C using renewable energy instead of electricity is presented in Table 56 below.

Table 56 Solar Thermal Water Heating System Environmental and Cost Savings Estimate BAU BAU BAU BAU Interv. Interv. Interv.




Solar GHG EF (kg CO2e/kWh)

Solar Thermal Cost (Rs./m2)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Solar Thermal 38.40 3819 1.25 13.25 0 6895 12,06,627.0 15,10,400 0.8 1,02,400.0 128.0 -8,628.2

Total / Avg. 12,06,627.0 15,10,400 0.8 1,02,400.0 128.0 -8,628.2

The cost analysis indicates that a 12,000 lpd system with 175 m2 collector area will require capital expenditure of INR 12.06 lakh and lead to annual cost savings from reduced electricity and avoided peak demand of INR 15.10 lakh per year. Thus, the expected payback period is highly attractive at 0.8 years. This intervention also possess the potential for significant positive environmental impact, it will conserve 1.02 lakh kWh of electricity every year and reduce GHG emissions by 128.0 metric tonnes CO2e every year. The relative environmental and cost impacts of the Solar Thermal Heating System are notably better than those of the LPG replacement option discussed earlier. It is therefore strongly recommended that the facility consider the Solar Thermal Water Heating System

4.2.8 Renewable Energy - Solar Photovoltaic System

As indicated in the assessment for Solar Thermal Water Heating system, the total rooftop surface feasible for harvesting solar energy is far greater than that required for the flat place collector panels and storage tanks. It is estimated that the facility will have a rooftop space of 16,000 – 1,884 sq. ft i.e. 14,000 sq. ft. for additional renewable energy generation through use of Solar Photovoltaic (PV) Panels to generate electricity. This renewable energy alternative presents immense life-cycle cost, environmental, and energy security benefits to the facility. The assessment in Table 57 below presents the design considerations that informed the technical design process that helped ascertain the potential power generation and cost savings that could be achieved through the use of 13,000 sq. ft5 for the solar PV system.

Table 57 Solar PV System Design


Location Mumbai, India

Mean Monthly Global Solar Radiant Exposure Over India 18.25 MJ/ m2/day

Mean Monthly Global Solar Radiant Exposure Over India 5.069 kWh/m2/day

Avg. Daily Sunshine Hours 4.8 hours/day

Solar PV Efficiency 9% %

Annual Sunshine Days 300 days

Available Area 13000 sq. ft.

Estimated Annual Electricity Generation 1,65,309 kWh/year

Avg. Solar PV Rated Output 96 W/ m2

Annual Solar PV Specific Energy Generation 136.9 kWh/ m2/year

Rated System Output 115.5 kW


The energy, positive environmental impact, and cost savings from utilization of 13,000 sq. ft. of rooftop space at the facility for reducing dependency on grid electricity is presented in Table 58 below.

5 Only 13,000 sq. ft. was considered for assessment to yield a conservative assessment as opposed to using the entire 14,000 sq. ft. as is theoretically available after subtracting solar thermal panel space requirements.

Table 58 Solar PV System Environmental and Cost Savings Estimate





Solar GHG EF (kg CO2e/kWh)

Solar Thermal Cost (Rs./m2)

Capital Cost (Rs.)





MAC (INR/MT CO2e)

Solar PV 115.52 1431 1.25 13.25 0 8942 1,08,00,000.0 26,19,994 4.1 1,66,348.8 207.9 -5,025.8

Total / Avg. 1,08,00,000 26,19,994 4.1 1,66,348.8 207.9 -5,025.8

The cost analysis indicates that a 115.5 kW system with 13,000 solar PV panel area will require capital expenditure of INR 1.08 Crore and lead to annual cost savings from reduced electricity and avoided peak demand of INR 26.20 lakh per year. Thus, the expected payback period is 4.1 years. This intervention also possess the potential for significant positive environmental impact, it will conserve 1.66 lakh kWh of electricity every year and reduce GHG emissions by 207.9 metric tonnes CO2e every year.

4.2.9 Deep Freezers, Refrigerator and Chiller Systems

The food and beverage services at the restaurants and bars within the facility require the use of Deep Freezers and Refrigerators as well as Beverage Chillers. These energy consuming appliances were analyzed through a field measurement process which employed plug-in power meters that measured total energy consumption and other electrical parameters while being plugged in for 19 to 28 hours. The results of this assessment are presented in Table 59 below. The Energy Audit of these refrigeration appliances indicates that the total instantaneous load of the equipment (I.e. when the compressors are ON), is 3.87 kW and leads to an annual energy consumption of 10,096 kWh and costs the facility INR 1.34 lakh per year in terms of energy charges. The assessment indicates that the Deep Freezers in the Pavillion Restaurant and Black Dog Bar & Restaurant have their compressors running for a high proportion of the time; 62 % and 91%, respectively. Comparatively, the ON time for the Melting Pot Restaurant Freezers is approximately 2% to 7% only. This alludes to the possibility of modifying the storage configuration in the deep freezers in the Pavillion Restaurant and Black Dog Bar & Restaurants with the aim of reducing the number of door opening events for these freezers. Furthermore, it was noted that some of the seals / gaskets of the equipment doors have deteriorated in condition (photographs demonstrating this condition are presented in Annexure 3). This precipitates air leakage conditions from the equipment and consequent energy loss. Finally, it was noted that the operational power factor the deep freezers was not optimal and there is a possibility of improving this aspect of the equipment to reduce the apparent power consumption (which affects demand imposed on the system). Improvement in power factor of deep freezers from the current values to 0.95 through use of capacitors etc. can reduce demand by 0.7 kVA and potentially save the facility INR 2,439 per year.

It is recommended that the facility management devise a plan to storing frequently used

items together in some of the freezers and segregate them from food items that are

seldom or less frequently accessed. This will yield energy conservation and cost benefits

without any capital expenditure.

It is emphatically recommended that the facility look to immediately replace and repair all

seals and gaskets of deep freezers and other refrigeration equipment.

Table 59 Energy Assessment from Deep Freezers, Refrigerators, and Beverage Chillers

Location ID Equipment ID Amps Volts W PF Meas. Period (hrs.)

Energy (kWh)

Energy Consum. (kWh/year)

Energy Cost (Rs./year)

GHG Emiss. (MT CO2e/yr.)

Estimated ON Time %

PAVILION REST. Deep Freezer 3 (from RHS)

4.18 231 792 0.82 19.12 9.64 4,416 58,513 5.52 63.6%

PAVILION REST. Deep Freezer 1 (from RHS)

3.81 227 598 0.69 18.88 6.89 3,197 42,363 4.00 61.0%

MELTING POT REST. Deep Freezer-5 (from RHS) F6 - Kitchen

5.62 236 1181 0.90 28.17 2.27 707 9,363 0.88 6.8%

MELTING POT REST. Plate Heater Machine - Kitchen

5.11 235 1102 0.92 28.10 0.64 200 2,644 0.25 2.1%

BLACK DOG BAR & REST.

Deep Freezer 1.76 234 197 0.48 4.27 0.77 1,577 20,893 1.97 91.3%

Total

20.47

3870.65

20.2 10,096 1,33,774 12.6

5 Water Audit Analysis The Water Audit process comprised of assessing the Rain Water Harvesting (RWH) potential from the facility’s buildings and campus and ascertaining the potential for substantive reduction in water use and sewage generation through dual-flow cisterns and waterless urinals in toilets.

5.1 Rain Water Harvesting

As indicated in the prior sections related to the water supply system, the following Table 60 provides a summary of the water consumption at the facility.

Table 60 Khar Gymkhana Water Bill Summary


Monthly Consumption 2,309 KL

Annual Consumption 27,702 KL

Monthly Cost 95,295 INR/year

Annual Cost 11,43,539 INR/year

The annual water consumption of the facility is 27.7 million liters of water at a cost of INR 11.44 lakh per year. The rainwater harvesting area for the facility includes all the rooftop surfaces including surfaces where future solar thermal and PV installations will possibly be installed. It must be noted that solar installation do not in any way hamper the rain water harvesting potential of most facilities. Additionally, it includes other paved surfaces such as surface parking lots, compound areas, tennis courts etc. It is estimated that the total harvestable area of the campus is in the range of 2306 m2 and the approximate average annual rainfall is 2.0 m in Mumbai.The water, environmental and cost conservation analysis is presented in below. The results indicate that Khar Gymkhana can conserve approximately 4.61 million liters of water every year through a RWH system (i.e. 17% water conservation) and allow the facility to be independent of municipal water supply for 60 days (2 months). The annual cost savings from this alternative are INR 1.99 lakh per year and will lead to mitigation of 9.22 metric tonnes of CO2e/year.


Table 61 Rainwater Harvesting Analysis

Paramter Value Units

Location: Khar Gymkhana

Harvestable Area 2,306 m2

Annual Rainfall 2.00 m

Annual RWH Potential 4,612 KL/yr.

Daily Water Consumption 77.0 KL/day

Water-Days Supplied by RWH 59.9 days

Water Cost 43.2 Rs./KL

Annual Cost Savings 1,99,251.7 Rs./yr.

Municipal Water GHG EF 0.002 kg CO2e/liter

GHG Mitigation 9.22 MT CO2e/yr.

5.2 Water Conservation Technologies

Two key technologies were assessed as part of the process of identifying methods to reduce water consumption by the facility. Dual-Flow Cisterns Water saving toilets with a dual-flush mechanism can reduce water consumption by 65% (assuming a 1.6 gal/0.8 gal configuration) relative to a convention (5 gal/flush) system. The primary benefits from this intervention are reduced potable water consumption and associated pumping energy conservation as well GHG mitigation. Waterless Urinals Waterless urinals use no water at all and use a trap insert filled with a sealant liquid instead of water. The lighter-than-water sealant floats on top of the urine collected in the U-bend, preventing odors from being released into the air. Although the cartridge and sealant must be periodically replaced, the system saves anywhere between 15,000 and 45,000 gallons (approx. 55,000 and 170,000 liters) depending on the urinal traffic. Some variants are based on an outlet system that traps the odor, preventing the smell often present in toilet blocks. Waterless urinals should replace all possible conventional urinals to ensure high degree of potable or recycled water conservation as well as the associated pumping energy use. The results of the energy, environmental and cost savings analysis are presented in Table 62 below.

Table 62 Water Conservation Fixtures Analysis

Fixture Type BAU Intervention Water Conserv. (lt./yr.)

Cost Savings (Rs./yr.)

Capital Cost (Rs.)

Payback (yrs.)

Nos. of Fix.

Usage (uses/day)

Water Use Rate (lt./event)

Water use (lt./yr.)

Nos. of Fix.

Usage (uses/day)

Water Use Rate (lt./event)

Water use (lt./yr.)

Maint. Cost (Rs./yr.)

Dual-Flow Cistern

32 480 15.14 26,52,528 20 480 4.00 7,00,800 0.00 19,51,728 1,34,903 3,20,000 2.4

Waterless Urinal 37 1,110 1.50 6,07,725 15 1,110 0.00 0.00 45,900 6,07,725 42,006 2,77,500 -71.3

Total 32,60,253 7,00,800 45,900 25,59,453 1,76,909 5,97,500

The overall water, cost and environmental conservation benefits from Rainwater Harvesting and Water Efficient Toilets is summarized in Table 63 below.

Table 63 Water Conservation related Environmental, Water, and Cost Conservation Summary


Capital Cost 5,97,500.00 INR



Payback Period 4.56 years

Water Conservation 71,71,760.69 liters/year

The analysis indicates that a RWH System along with low-flow toilets and waterless urinals can help conserve 71.7 lakh liters of water every year, yield a cost savings of INR 3.30 lakh per year These interventions will require reduction of the number of WC and urinal fixtures to ensure that the efforts are cost effective. The expected capital expenditure required will be INR 5.97 lakh (exclusive of the cost of constructing the rain water harvesting system), who’s costs are not available at this point. The cumulative payback period is 4.56 years (again excluding the cost of the RWH system). This intervention also reduce GHG emissions by 14.3 metric tonnes CO2e every year.

6 Conclusion The total current annual energy consumption of Khar Gymkhana is approximately 18.8 Lakh kWh/year (1.57 Lakh kWh/month). The average energy cost being paid by the facility is INR 20.85 Lakh per month and INR 2.503 Crore per year. The current annual water consumption by the facility is 27.7 million liters per year (23 lakh litres per month) and the cost paid for this precious natural resource is INR 11.4 Lakh per year. The area wise and system-wise energy consumption results are presented in Figure 21 and Figure 22 below. The results encompass energy consumption from HVAC, Lighting, Ventillation, Pumping, Water Heating, and Refrigeration systems.

Figure 21 Area-Wise Overall Annual Energy Consumption Comparison

0

200

400

600

800

1,000

1,200

1,400

0

20,000

40,000

60,000

80,000

1,00,000

1,20,000

1,40,000

1,60,000

EPI (

kWh

/m2

/ye

ar)

An

nu

al E

ne

rgy

Co

nsu

mp

tio

n (k

Wh

/ye

ar)

Khar Gymkhana Energy Audit - Overall Area-Wise Energy Consumption Comparison

Energy Consumption (kWh/yr.) EPI

Total Annual Billed Energy Consumption (2013-2014) = 18.8 Lakh kWh/yearTotal Assessed Energy Consumption (2013-2014) = 13.3 Lakh kWh/year


Figure 22 System-Wise Overall Annual Energy Consumption Comparison

The charts indicate that HVAC energy consumption contributes the majority of the impact (46.5%) followed closely by Lighting energy consumption (32.7%). Water Heating (an area that offers immediate energy conservation potential as proposed later) represents 8.3% of the electrical load. The results indicate that the areas / activities resulting in the highest energy consumption are (in descending order):

1. Tennis Court & Club

2. Melting Pot Restaurant

3. Pavillion Restaurant

4. Badminton Court

5. Presidential Hall

6. 4th Floor Gym

7. 5th Floor Squash Court

8. Swimming Pool

9. Ladies Spa & Saloon

10. TT Department

11. Gents Health Club

12. Card Room

13. Black Dog Bar & Restaurant

14. Billiards Room

HVAC46.5%

Lighting32.7%

Pumping5.6%

Water Heating8.3%

Refrigeration0.8%

Ventillation6.1%

Khar Gymkhana Energy Audit - Overall System-Wise Energy Consumption Comparison

HVAC

Lighting

Pumping

Water Heating

Refrigeration

Ventillation

Total Annual Billed Energy Consumption (2013-2014) = 18.8 Lakh kWh/yearTotal Assessed Energy Consumption (2013-2014) = 13.3 Lakh kWh/year


However, in terms of the energy consumption per meter square of space (or the EPI – measured in kWh per m2 per year) the order (descending) is as presented below:

1. Gents Health Club

2. Melting Pot Restaurant

3. Pavillion Restaurant

4. Presidential Hall

5. 4th Floor Gym

6. Black Dog Bar & Restaurant

7. 5th Floor Squash Court

8. Card Room

9. Badminton Court

10. Billiards Room

11. TT Department

12. Tennis Court & Club

It is noteworthy that while in terms of absolute energy consumption the Tennis Court facilities might consume the highest energy, they are the most efficient in terms of energy consumption per square meter. The highest energy consumption per square meter is the Mens Health Club owing to the high energy consumption for hot water heating, followed by the Melting Pot and Pavillion Restaurants. The overall benefits of proceeding with implementation of the various interventions proposed in the earlier section are substantial; Khar Gymkhana has the invaluable opportunity to reduce its energy consumption by 48% and its water consumption by 26%. The consolidated environmental, cost and energy conservation impacts of all proposed alternatives is presented in Table 64 below.

Table 64 Overall Conservation Summary from Energy Efficiency & Renewable Energy

Parameter Energy Projects Water Projects Units

Capital Cost 3,56,58,933 5,97,500.00 INR

Demand Reduction 314 NA kVA

GHG Mitigation 1,132 14.34 MT CO2e/year

Cost Savings 1,38,51,001 3,30,261.40 INR/year

Payback Period 2.57 4.56 years

Energy Conservation 9,05,850 (48%) NA kWh/year

Water Conservation NA 71,71,760.69 (26%) liters/year


It must be noted that the actual savings may vary in the range ± 20% depending upon site conditions and other unforeseen variables. The recommended priority list for implementation of all energy related interventions proposed follows the order of the relative Marginal Abatement Cost Curve specifically developed for the facility as the culminating outcome of the Energy Audit. The MACC Curves for the facility are presented below in Figure 23.

The overarching conclusion from the Energy Audit process was that Khar Gymkhana can achieve the following positive impacts on the environment and its operational costs:

Reduce Greenhouse Gas Emissions by 1,132 metric tonnes of CO2 per year

(equivalent to planting approximately 4,529 trees every year)

Conserve 9.05 lakh units of electricity every year (enough to power 755 average Indian

homes per year)

Conserve 71.7 lakh liters of water every year

Reduce its operational cost by INR 1.42 Crore every year

The capital cost for implementing all the proposed projects is approximately INR 3.63

Crore

The payback period for these investments is a very feasible 2.6 years for energy

projects and 4.6 years for water projects.

Figure 23 Marginal Abatement Cost Curve

-20,000

-16,000

-12,000

-8,000

-4,000

0

4,000

8,000

12,000

16,000

0 100 200 300 400 500 600 700 800 900 1000 1100

MA

C: I

NR

/tC

O2

tonnes of carbon saved/year

Khar Gymkhana Energy Audit 2014 - MACC Curve

A B D E F G H I L L M N O P Q R S T

U V W X Y Z AA AB AC AF AG AH AI AJ AK AL AM AN

The MACC Curve presented above depict the relative priority of projects listed from A to AN (25 distinct projects) for conserving energy. The MACC curve is ordered in a manner such that the most feasible projects with low capital cost requirements and relatively higher life-cycle savings per initial cost are presented to the left. The width of the ‘project bar’ indicates the total GHG emissions (or energy savings) possible through the alternative. This project A is to be considered the highest priority project and project AN to be considered the lowest priority project. The projects are described below in Table 65 and this serves as the ‘key’ to the MACC curves presented.

Table 65 Listing of Energy Conservation MACC Projects

Project ID

Project Type Location Project Description Capital Cost (INR)

Annual Savings (INR)

Payback Per. (yrs.)

A Water Heating Hot Water Showers MCB Control 1,200 48,145 0.02

B Lighting 4th Fl. Terrace 20 W to 10 W CFL 0 3,093 0.00

D Lighting 8th Fl. Terrace lobby Removal of 6 PL Lamps 0 1,860 0.00

E Lighting Ballantine Bar Lounge Entrance Removal of 17 Halogen Lights 0 26,009 0.00

F Lighting 5th Fl. Squash Court & Hall Lobby Removal of 12 T12 Lights 0 13,219 0.00

G Lighting Swimming Pool Pathway Lights 20 W to 10 W CFL 0 3,060 0.00

H Lighting Reception Lobby Area Removal of 6 PL Lamps 0 4,262 0.00

I Space Cooling Overall Energy Saver Retrofit for Small ACs Energy Saver Retrofit 4,35,500 6,03,224 0.72

L Space Cooling Card Room 0 Star to 5 Star Split AC 65,980 73,931 0.89

M Space Cooling Card Room 0 Star to 5 Star Split AC 65,980 63,409 1.04

N Pumping Swimming Pool 33% Overall Eff. to 64% Overall Eff. 69,771 2,40,905 0.29

O Pumping Swimming Pool 33% Overall Eff. to 64% Overall Eff. 1,22,099 3,36,500 0.36

P Lighting Overall Replacement GLS Lamp to CFL Bulbs 71,867 1,42,021 0.51

Q Water Heating Solar Thermal Replacement Electric to Solar Thermal 12,06,627 15,10,400 0.80

R Space Cooling Overall Maint. Improv. for Large ACs Insulation, ODU Replacement 0 1,10,601 0.00

S Ventillation Melting Pot Rest. Exhaust Motor 20% run-time reduction 0 1,24,001 0.00

T Ventillation Pavillion Rest. Exhaust Motor 20% run-time reduction 0 52,715 0.00

U Ventillation Melting Pot Rest. Supply Motor 20% run-time reduction 0 19,925 0.00

V Ventillation Pavillion Rest. Supply Motor 20% run-time reduction 0 19,925 0.00

W Space Cooling Melting Pot Rest. Conventional Ductable AC to Hydrid AC 12,85,714 9,59,782 1.34

X Space Cooling Squash Court Conventional Ductable AC to Hydrid AC 12,85,714 9,59,782 1.34

Y Space Cooling Badminton Court Conventional Ductable AC to Hydrid AC 19,28,571 14,39,672 1.34

Z Space Cooling Billiards Room Conventional Ductable AC to Hydrid AC 12,85,714 6,82,215 1.88

AA Space Cooling Yoga Room 0 Star to 5 Star Split AC 1,31,960 49,199 2.68

AB Lighting Pavillion Rest. Lobby & Lift Lobby Halogen to LED 21,951 8,238 2.66


Project ID

Project Type Location Project Description Capital Cost (INR)

Annual Savings (INR)

Payback Per. (yrs.)

AC Space Cooling Table Tennis Dept. Conventional Ductable AC to Hydrid AC 25,71,429 9,89,371 2.60

AF Space Cooling Ballantine Bar Conventional Ductable AC to Hydrid AC 12,85,714 4,15,122 3.10

AG Electric Supply Solar PV Grid to Solar PV 1,08,00,000 26,19,994 4.12

AH Lighting Overall Replacement T12 to T5 Tubelights 9,72,643 2,43,852 3.99

AI Lighting Overall Replacement T12 to T5 Tubelights 12,13,740 2,56,226 4.74

AJ Lighting Tennis Court B Metal Halide to LED 38,28,365 7,51,180 5.10

AK Lighting Cricket Ground Metal Halide to LED 23,92,728 4,33,094 5.52

AL Lighting Tennis Court A Metal Halide to LED 38,28,365 6,27,529 6.10

AM Lighting 4th Fl. Terrace Halogen to LED 5,01,906 53,341 9.41

AN Lighting 8th Fl. Terrace Outdoor Gym Metal Halide to LED 2,86,596 13,344 21.48

For effective implementation of project it is opined that a PMC (Project Management Consultant) may be appointed by the management. The PMC can prepare blueprints, draft specifications and BOQs, execute floating of enquiries, and conduct techno-commercial negotiations with approved vendors. The PMC will also oversee project implementation and may be entrusted with energy saving certification. Presently the Gymkhana sections have section wise sub meter for energy recording. The job is laborious as it is done manually. The chances of human errors cannot be ruled out. It is therefore recommended that an EMS (Energy Management System) is installed. EMS systems employ electronic meters with data logging and transmitting abilities through a data network. All relevant energy data (daily, weekly and monthly) in desires format with basic Management Information Systems can be retrieved digitally for further analysis using spreadsheet softwares etc. This is a vital first step toward Energy Benchmarking to enable monitoring of energy consumption and savings as the implementation of energy conservation projects and processes progresses. A brief write up (PDF) on the BMS is attached in Annexure 5. Currently, the facility routinely consumes a higher peak demand relative to its contracted demand and as a consequence pays a significant sum (approximately INR 15.0 lakh per year) as excess demand penalty charges every year. A significant demand reduction is expected through implementation of the recommended energy saving projects. However, if these projects are not implemented in their entirety and if increased loads are expected in the near future, the management may apply for and get revised demand (up to 600 KVA) sanctioned with the help of a PMC to avoid penalty charges due to excess demand.


ANNEXURE – I

DATA SHEETS OF AIR CONDITIONERS

MANUFACTURER INFORMATION for HYBRID AC TECHNOLOGY

Measurements Table 1: New Building 4th Floor Gym Area

AC Type # Status Rated TR

Ambient Air

Hot Air Side

Fan Vel. (m/sec) [ODU]

Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)

Perf. Derating (%) kW/TR EER

DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 20 30.5 27.5 35 28.5 9.09 1.2272 16.5 1.10 16.35 18% 1.01 3.48

Tower 1 ON 3.7 30.5 27.5 35 29 4.55 0.3734 4.2 1.69 3.84 -4% 1.10 3.19

Tower 1 OFF 3.7 30.5 27.5

Tower 1 ON 3.7 30.5 27.5 35 29 5.76 0.3734 4.2 1.69 4.86 -31% 0.87 4.07

Tower 1 ON 3.7 30.5 27.5 37 29 5.65 0.3734 4.3 1.67 4.70 -27% 0.92 3.82

Cassette 1 Not Functional 5 30.5 27.5

Performance Summary 1: New Building 4th Floor Gym Area

Total TR (installed) 39.8

Total TR (functional) 31.1

Total TR (delivered) 29.75

Total Floor Area (m2) 230.8

TR/m2 (installed) 0.172

TR/m2 (functional) 0.135

TR/m2 (delivered) 0.129

Total Power Consumption (kW) 29.3

Avg. Cooling Derating % 4%

Avg. kW/TR (delivered) 0.98

Avg. EER (delivered) 3.6

Avg. BEE Star Rating 5 Star


Measurements Table 2: New Building 4th Floor Yoga Room


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Split 1 ON 2 30.5 27.5 39 29.5 5.23 0.1868 4.0 2.25 2.94 -47% 1.38 2.55

Split 1 ON 2 30.5 27.5 39 29.5 5.23 0.1868 4.4 2.25 2.94 -47% 1.50 2.35

Performance Summary 1: New Building 4th Floor Gym Area

Total TR (installed) 4

Total TR (functional) 4







Avg. Cooling Derating % -47%



Avg. BEE Star Rating No Star

Note: Restaurant Ovens had blocked the outdoor unit of Split AC-2. Hence readings were not possible and have been repeated from Split AC-1 for the purpose of analysis


Measurements Table 3: Ground Floor Presidential Hall


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 10 30.5 27.5 44 31 7.6 0.4203 10.1 4.09 17.45 -74% 0.58 6.08

Ductable 1 ON 10 30.5 27.5 42 29 7.8 0.4203 1.61 7.03 30%

Cassette 1 ON 2 30.5 27.5 40 29.5 5.4 0.1868 2.4 2.24 3.01 -51% 0.81 4.33

Cassette 1 ON 2 30.5 27.5

Cassette 1 ON 2 30.5 27.5 40.5 30 4.2 0.1868 2.1 2.85 2.99 -49% 0.71 4.94

Cassette 1 ON 2 30.5 27.5 41 30 4.1 0.1868 2.4 2.85 2.91 -46% 0.84 4.21

Cassette 1 ON 2 30.5 27.5 34.5 29 2 0.1868 2.6 1.70 0.85 58% 3.06 1.15

Cassette 1 ON 2 30.5 27.5 34.5 29 1.5 0.1868 3.3 1.70 0.64 68% 5.16 0.68

Cassette 1 ON 2 30.5 27.5 38 29 4.1 0.1868 2.1 1.65 1.69 15% 1.26 2.80

Cassette 1 ON 2 30.5 27.5 40 29.5 4.6 0.1868 2.6 2.24 2.57 -28% 1.01 3.49

Performance Summary 3: Ground Floor Presidential Hall














Measurements Table 4: New Building Ground Floor Pavillion Room


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 10 30.5 27.5 43.5 31 7.8 0.6136 11.8 4.10 26.18 -162% 0.45 7.80

Ductable 1 ON 10 30.5 27.5 42.5 30.5 4 0.6136 13.1 3.46 11.34 -13% 1.16 3.04

Ductable 1 OFF 2 30.5 27.5

Ductable 1 ON 2 30.5 27.5 36.5 29 6.4 0.2363 1.3 1.67 3.38 -69% 0.39 9.02

Performance Summary 4: New Building Ground Floor Pavillion Room












Avg. BEE Star Rating 5 Star Note: 2TR Ductable AC 1 was not working. Hence readings were not possible.


Measurements Table 5: New Building 5th Floor Squash Court


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 20 30.5 27.5 38 28 8.1 0.6136 18.1 0.48 3.19 84%

Ductable 1 ON 20 30.5 27.5 38 28 7.9 0.6136 16.5 0.48 3.11 84%

Performance Summary 5: New Building 5th Floor Squash Court














Measurements Table 6: New Building 7th Floor Melting Pot Restaurant


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 20 30.5 27.5 38 28 10.3 1.524 20.8 0.48 10.06 50% 2.07 1.70

Performance Summary 6: New Building 7th Floor Melting Pot Restaurant














Measurements Table 7: New Building 7th Floor Ballantines Bar


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 20 30.5 27.5 38 28 0.48 0.00 100%

Performance Summary 7: New Building 7th Floor Ballantines Bar










Avg. kW/TR (delivered) -

Avg. EER (delivered) -

Avg. BEE Star Rating -

Note: Ductable AC was under maintenance during data collection. Hence readings were not possible.


Measurements Table 8: New Building 6th Floor TT Department


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 20 30.5 27.5 38.5 28 9.8 1.524 0.47 9.46 53%

Ductable 1 ON 20 30.5 27.5 38.5 28 9.5 1.524 0.47 9.17 54%

Performance Summary 8: New Building 6th Floor TT Department











Avg. EER (delivered) -

Avg. BEE Star Rating -

Note: Power measurements were not possible as separate MCB for AC’s could not be traced.


Measurements Table 9: New Building 2nd Floor Black Dog Bar & Restaurant


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Ductable 1 ON 5 30.5 27.5 39.5 30.5 4.4 0.3736 8.2 3.50 7.68 -54% 1.07 3.30

Ductable 1 ON 5 30.5 27.5 38 30 6.3 0.3736 8.2 2.88 9.06 -81% 0.90 3.89

Ductable 1 OFF 5 30.5 27.5

Tower 1 ON 3.7 30.5 27.5 42 31 2.7 0.4218 6.1 4.12 6.26 -69% 0.97 3.63

Tower 1 Not Func. 3.7 30.5 27.5

Performance Summary 9: New Building 2nd Floor Black Dog Bar & Restaurant













Note: One of the Ductable AC was OFF and pipeline of one of the Tower AC was broken hence was kept OFF during data collection. Power measurement has been done on the Main Breaker of A.C. as separate MCB’s for each AC could not be traced.


Measurements Table 10: New Building 2nd Floor Conference Room


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Split 1 OFF 2 30.5 27.5 0.0

Split 1 ON 2 30.5 27.5 5.1 0.1868 0.6

Window 1 ON 1.5 30.5 27.5 46 31.5 2.4 0.2294 3.1 4.73 3.48 -132% 0.90 3.92

Performance Summary 10: New Building 2nd Floor Conference Room













Note: 2TR Split AC-1 Outdoor fan was OFF. Indoor side cooling is also not good. 2TR Split AC is not consuming any power; Compressor might not be working properly


Measurements Table 11: New Building 2nd Floor Badminton Court


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Pack. AHU 1 ON 10 30.5 27.5 41 29.5 6.7 0.5838 4.4 2.22 11.62 -16% 0.38 9.31

Pack. AHU 1 OFF 10

Pack. AHU 1 OFF 10

Performance Summary 11: New Building 2nd Floor Badminton Court














Measurements Table 12: Old Building 1st Floor Card Room


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Split 1 ON 2 30.5 27.5 39 29.5 2.4 0.1233 2.0 2.25 0.89 56% 2.25 1.56

Split 1 ON 2 30.5 27.5 39 29.5 2.6 0.1233 2.0 2.25 0.96 52% 2.08 1.69

Pack. AHU 1 ON 10 30.5 27.5 41 31 8.5 0.5838 10.0 4.13 27.37 -174% 0.37 9.62

Pack. AHU 1 ON 10 30.5 27.5 38 29 8.3 0.5838 10.0 1.65 10.71 -7% 0.93 3.77

Performance Summary 12: Old Building 1st Floor Card Room














Measurements Table 13: Old Building 1st Floor Billiards Room


Ambient Air

Hot Air Side


Fan Area (m2)

Power Cons. (kW)

Δ H kcal/kg

Cooling Del. (TR)


DBT [°C]

WBT [°C]

DBT [°C]

WBT [°C]

Pack. AHU 1 ON 5.46 30.5 27.5 37 28.5 8.5 0.2919 5.1 1.07 3.56 35% 1.44 2.44

Pack. AHU 1 ON 5.46 30.5 27.5 37.5 29 8.3 0.2919 5.0 1.66 5.37 1% 0.93 3.77

Pack. AHU 1 ON 10.95 30.5 27.5 38 29.5 5.6 0.1764 10.0 2.26 2.98 73% 3.37 1.05

Performance Summary 13: Old Building 1st Floor Billiards Room













Old Building. - 1st Floor Bar Room

Split

Bluestar

2

1

Daikin 1

Total Line 1

Window OGeneral 2 2

Air Blower - 3 1

Old Building - Accounts Department Window OGeneral 2 2

LG 1.5 1

Old Building – Library Department Split LG 2 3

Old Building – Tennis Changing Room Split LG 2 1

Old Building – Fitness Zone Split Mitsubishi 1.5 1

Old Building - Main Office Dept. Split LG 2 1

Hitachi 1.5 1

Old Building – Old Table Tennis Dept. Split LG 2 2

Samsung 2 1

New Building – Basement Passage Split LG 2 1

New Building – Ladies Spa & Saloon

Split - 2 4

Window - 2 1

- 1 3

New Building – Swimming Pool Side Ladies Changing Room

Split Daikin 2 3

New Building – Cyber Cafe Split - 2 1

New Building – Swimming Pool Side Gents Changing Room

Split Panasonic 1.5 1

Panasonic 2 3

New Building – Trustee Office Split LG 2 2


AIR CONDITIONING INDOOR & OUTDOOR SIDE NAMEPLATE DETAILS Area: New Building – Ground Floor Pavillion Room 10TR Ductable AC’s: Outdoor Unit Details Make – Trane Minimum Circuit Amps. – 29.83A 2TR Ductable AC’s: Outdoor Unit Details Make – Trane Minimum Circuit Amps. – 14.55A Area: New Building – Ground Floor Presidential Hall 2TR Cassette AC’s: Outdoor Unit Details Make – Trane Cooling Capacity – 24000 BTU/Hr. Area: New Building – 8th Floor Melting Pot Restaurant 20TR Ductable AC: Outdoor Unit Details Make – Trane Model No. – TTA240RDOOMA Minimum Circuit Amps. – 52.13A Area: New Building – 2nd Floor Badminton Court 10TR Outdoor Unit (3 Nos.): Make – Blue Star Model No. – DSA1321R1-0 Rated Current – 23 Amperes Packaged Aircon Indoor Unit Details: Make – Blue Star Model No. – SX-207 Rated CFM – 11750 Area: New Building – 2nd Floor Black Dog Bar and Restaurant 3.7 TR Tower AC’s: Outdoor Unit Details Make – Daikin Model No. – R125LUY1 Rated Current – 12.5 A Cooling = 6.4 to 6.5 KW 5TR Ductable AC-1: Outdoor Unit Details Make – Carrier Model No. – 38LH-0100K Rated Current – 17.5 A Cooling Capacity = 22500 Kcal/Hr. 5TR Ductable AC-2: Outdoor Unit Details Make – Carrier


Model No. – 38LH-100S Rated Current – 16.0 A Cooling Capacity = 25500 Kcal/Hr. I/P Power = 8470 Watts Area: Old Building – 1st Floor Card Room Packaged Aircon Unit Indoor Details: Make: Hitachi Model No. – MPAB198EMD3 Watts- 3000 Amperes- 8 Cooling Capacity – 49500 Kcal/Hr. Packaged Aircon Unit Outdoor Details: Make: Hitachi Model No. – MPA0198EMD3 Power – 19000 Watts Amperes- 35 Cooling Capacity – 49500 Kcal/Hr Refrigerant: R-22 2TR Split AC Outdoor Unit Details: Make – Voltas Area: Old Building – 1st Floor Billiards Room Packaged Aircon Indoor Unit (1 &2) Details: Make – Blue Star Model No. – DSA661R1-1A Normal Capacity – 16500 Kcal/Hr Rated Current – 3 Amperes Refrigerant: R-22 Packaged Aircon Outdoor Unit (1 &2) Details: Make – Blue Star Model No. – DSA661R1-0H Nom. Capacity – 16500 Kcal/Hr Rated Current – 11 Amperes Refrigerant: R-22 Packaged Aircon Outdoor Unit-3 Details: Make – Blue Star Model No. – DSA1321R1-0H Nom. Capacity – 33100 Kcal/Hr Refrigerant: R-22


ANNEXURE – II

LIGHTING SYSTEM MEASUREMENTS

RECCOMMENDATION FOR METAL HALIDE LAMPS REPLACEMENTS for

TENNIS COURT and CRICKET GROUND


Indoor [New & Old Building] Light Fittings

Type of

Fitting Watts

Qty

(Nos.)

Total

Wattage

Area

(m2)

Height upto

Work Plane

(m)

Average

Lux Level

Actual Lighting

Power (Watts)

New Building – 4th Floor Gym Area Main

PL lamp 2 x 26W 53 2756 200.67 2.743 89

2756

FTL 4 x 36W 50 7200 30.10 2.743 7200

Working Hours : Evening 6.30 P.M. to 11.30 P.M.

NOTE : This area is in L Shape.

New Building – 4th Floor Gents Health Club Waiting Room

PL lamp 2 x 26W 4 208 19.509 2.743 - 208

Working Hours: Evening 6.30 P.M. to 11.30 P.M. (Lux level could not be measured due to daylighting)

New Building – 4th Floor Gents Health Club Locker Room

PL lamp 2 x 26W 12 624 29.915 2.743 97 624

Working Hours: Evening 6.30 P.M. to 11.30 P.M.

New Building – 4th Floor Gents Health Club Sauna &Steam Bathroom

PL lamp 2 x 26W 25 1300 - -

45

1040

Bulb 40W 2 80 - - 80

CFL 36W 2 72 - - 72

Working Hours: Morning 9.00 A.M. to 11.30 P.M. Night

New Building – 4th Floor Yoga Room

T5 Tube 28W 16 448 64.178 3.658 141

336

PL lamp 2 x 26W 10 520 312


New Building – Ground Floor Presidential Hall

Halogen

Spot Lights 12V,50W 30 1500

170.569 3.048 53

1300

LED 3W 28 84 78

T5 Tube 20W 90 1800 1760

Wall

Hanging

CFL

8W 5 40 40

Working Hours: 6 Hours / Day

New Building – Ground Floor Pavilion Restaurant

Halogen

Spot Lights 12V, 50W 74 3700 198.463 3.353 64 3500


LED Tape

Working Hours: Afternoon 12 P.M. to 4.00 P.M. and Evening 7 P.M. to Midnight 12.00 A.M.

New Building – 5th Floor Squash Court

FTL 2 x 36W 30 2160 62.4308 6.096 749

2160

FTL 2 x 54W 33 3564 3564

Working Hours: Morning 6 A.M. to 11.30 A.M. and Afternoon 3 P.M. to 10.30 P.M.

New Building – 5th Floor Squash Court Hall

PL lamp 2 x 18W 8 288 141.2126 6.096 92 288


New Building – 5th Floor Squash Court Ladies Changing Room

PL lamp 2 x 18W 14 504 18.8365 2.7432 - 432


New Building – 5th Floor Squash Court Men’s Changing Room including passage

PL lamp 2 x 18W 20 720 18.8365 2.7432 - 648


New Building – 5 ½ Floor Squash Court Men’s & Ladies Changing Room

PL lamp 2 x 18W 34 1224 18.8365 2.7432 - 1080


New Building 7th Floor Melting Pot Restaurant Kitchen

FTL 2 x 36W 19 1368 - -

168

1368

Halogen

Bulb 150W 25 3750 - - 3750

PL 2 x 36W 10 720 - - 648

Working Hours: Afternoon 12 P.M. to 4 P.M. and Evening 6 P.M. to Midnight 12.30 A.M.

7th Floor Melting Pot Restaurant

LED 5W 20 100 188.547 3.3528 -

100

LED 3W 5 15 15

Working Hours: Afternoon 12 P.M. to 4 P.M. and Evening 6 P.M. to Midnight 12.30 A.M.

New Building 7th Floor Ballantines Bar

LED 5W 13 65 63.39 3.3528 - 65

Working Hours: Evening 7 P.M. to Midnight 12.30 A.M.

New Building 6th Flr. T/T Dept.

LED

(2 x 2)panel 50W 56 2800

308.049 4.877 382

2800

T5 28W 72 2016 2016

FTL 36W 9 324 324


Working Hours: 8 to 10 Hours per day

6th Floor T/T Department Ladies Washroom

PL 2 x 18W 5 180 - - -

180

FTL 36W 1 36 36


6th Floor T/T Department Gents Washroom

PL 2 x 18W 5 180 - - - 180


Swimming Pool Side – Aditi Restaurant

PL 2 x 18W 83 2988 - - 51

2988

FTL 36W 9 324 324

Working Hours : Evening 7.30 P.M. to Midnight 12.00 A.M.

NOTE : Lux level could not be measured due to day lighting

Swimming Pool – Gents Changing Room passage

LED 8W 4 32 - - 31 32

Working Hours: Morning 6 A.M. to 10 A.M. and Evening 7 P.M. to 11 P.M.

Swimming Pool – Gents Changing Room

LED 8W 22 176 - - 78 176


Swimming Pool – Gents Shower Room

LED 8W 24 192 - - - 192


New Building Trustee Office

PL 2 x 11W 12 264 - - - 264

Working Hours: Morning 9 A.M. to Evening 8 P.M.

New Building 2nd Floor Black Dog Bar & Restaurant

Halogen

Spot Lights 12V, 35W 9 315

166.1848 2.4384 78

315

T5 28W 9 252 252

FTL 36W 39 1404 1404

Innoba LED

Lights 11W 28 308 308

LED Tape

50 mtr. - - - -

Working Hours: Evening 7.00 P.M. to Midnight 12.00 A.M.

New Building 2nd Floor Conference Room


FTL 2 x 36W 10 720

49.4024 2.652 256

720

Wall Hanging

Bulb 60W 8 480 480


New Building 2nd Floor Badminton Court

FTL 2 x 56W 46 5152 381.6457 10.058 168

5152

FTL 1 x 56W 20 1120 1120

Working Hours: Morning 6 A.M. to Night 10 P.M.

2nd Floor Badminton Court Gents Changing Room

PL 2 x 18W 17 612 39.3314 2.4384 64 540


2nd Floor Badminton Court Ladies Changing Room

PL 2 x 18W 17 612 39.3314 2.4384 64 504


Swimming Pool side Ladies Spa & Saloon

Bulb 60W 37 2220 - - - 2220

Working Hours: Morning 8 A.M. to Night 9 P.M.(Lights are ON depending upon persons occupancy)

Swimming Pool side Ladies Changing Room

Halogen Spot

Lights

12V,

50W 15 750 - - - 750

PL Lamp 2 x 18W 34 1224 - - - 1224

Working Hours: 10.00 A.M. to 1.00 P.M. and Evening 4.00 P.M. to 7.00 P.M.

Area Reference: Cyber Cafe

CFL 8W 10 80 - - - 80

Working Hours: Morning 9.00 A.M. to Evening 8.00 P.M.

Basement Passage

PL Lamp 11W 6 66

14.0468 2.3165 21

66

PL Lamp 18W 5 90 90

4 feet FTL 36W 1 36 36

2 feet FTL 18W 1 18 18

Working Hours: 10-12 Hours per day

Area Reference: Basement Parking

FTL 2 x 36W 52 3744 - - 22 3744

Working Hours: Morning 6.00 A.M. to Night 11.30 P.M.

Area Reference: Old Building – 1st Floor Card Room

PL Lamp 1 x 11W 8 88 235.8614 2.7432 120 88


PL Lamp 2 x 11W 81 1782 1782

Halogen Spot 12V, 50W 8 400 400

Working Hours: Afternoon 4 P.M. to Night 11.00 P.M.

Area Reference: Old Building – 1st Floor Card Room Washroom(Gents & Ladies)

PL Lamp 2 x 9W 11 198 - - - 198


Area Reference: Old Building – 1st Floor Billiards Room (Downside Area)

FTL 1 x 36W 10 360 155.798 3.6576 558

360

FTL 4 x 36W 8 1152 1152


NOTE: Lights are switched ON depending upon the persons occupancy

Area Reference: Old Building – 1st Floor Billiards Room (Upside Area)

CFL 35W 7 245 81.1973 2.7432 19 245



Area Reference: Old Building – 1st Floor Billiards Room (Gents & Ladies Washroom)

FTL 36W 6 216 - - - 216



Old Building – 1st Floor Bar Area

PL Lamp 11W 12 132

65.0321 2.7432 8

132

PL Lamp 10W 4 40 40

CFL 5W 6 30 30

Superlux Bulb 60W 5 300 300

Working Hours: Evening 6.00 P.M. to Midnight 12.00 A.M.

Old Building – Accounts Dept.

FTL 2 x 36W 8 576 - - - 576


Old Building – Library Dept.

LED 11W 26 286

- - -

286

PL Lamp 2 x 36W 8 576 576

Bulb 60W 2 120 120


Old Building – Tennis Players Changing Room

LED 18W 7 126 - - - 126

LED 8W 3 24 - - - 24



Old Building – Tennis Club Area Passage

FTL 1 x 36W 2 72 - - - 72

FTL 2 x 36W 3 216 - - - 216


Old Building – Fitness Zone & Passage

PL 2 x 18W 8 288 - - - 288


Area Reference: Old Building – Main Office Dept.

PL 2 x 11W 16 352 - - - 352


Old Building – Old Table Tennis Dept.

CFL 65W 6 390

155.1289 4.572 149

390

CFL 35W 3 105 105

FTL 1 x 36W 4 144 144

FTL 2 x 36W 14 1008 1008

Working Hours: Morning 11.30 A.M. to Afternoon 1.00 P.M. and Afternoon 3.00 P.M. to Night 9.00 P.M.


Outdoor [New & Old Building] Light Fittings

Type of

Fitting Watts

Qty

[Nos.]

Total

Wattage

Area

[m2]

Height up to

Work Plane

[m]

Average

Lux Level

Actual Lighting

Power (Watts)

New Building – Pavilion Restaurant Outdoor Side

CFL 14W 8 112 - - - 112

Halogen Spot 12V, 50W 8 400 - - - 400

Working Hours: Evening 7.00 P.M. to 12.00 A.M. Midnight

New Building – Terrace Outdoor Gym (8th Floor)

Metal Halide

Lamps 400W 4 1600 - - - 1600

Working Hours : 3 to 4 Hours / Day

NOTE : Lights are kept OFF during monsoon season

New Building – 4th Floor Terrace (Opposite to Squash Hall)

CFL Bay

Lights 20W 35 700 - - - 700

Halogen Bulb 1000W 8 8000 - - - 8000

CFL

(Bathroom) 18W 6 108 - - - 108

Working Hours: These lights are ON only when party is there in terrace. Approximately there are 7 to 8

parties in a month.

Tennis Court - A (Outdoor)

Metal Halide

Lamps 2 x 320W 64 40,960 600.1536 9.144 419 40,960

Working Hours: 6.30 P.M. to 11.30 P.M. (Lights are kept OFF during monsoon season)

Tennis Court - B (Outdoor)

Metal Halide

Lamps 2 x 320W 72 46,080 600.1536 9.144 454 46,080

Working Hours : 6.30 P.M. to 11.30 P.M.

NOTE : Lights are kept OFF during monsoon season

Old Building – 1st Floor Passage Area

FTL 18W 3 54

- - -

54

FTL 36W 2 72 72

Bulb 60W 3 180 180


Old Building – Reception Lobby Area


PL Lamps 2 x 18W 24 864

156.077 4.572 76

864

PL Lamps 11W 12 132 132

CFL 18W 2 36 36

Working Hours: 6 numbers of PL Lamps are kept ON from morning 6 A.M. to Evening 6. P.M. All the

lights are switched ON in evening from 6.00 P.M. to 11.00 P.M.

Old Building – Main Gate Outdoor Area

CFL 18W 3 54

- - -

54

CFL (Yellow &

White Lights) 20W 17 340 340

FTL 36W 8 288 288

Working Hours: 6.30 P.M. to 11.30 P.M.

Old Building 1st Floor Staircase Landing and lobby

FTL 36W 6 216 - - - 216


8th Floor Terrace lobby

PL 1 x 11W 11 121 - - 47 121

Working Hours: 6.00 P.M. to 11.00 P.M. Removal of 6 Light Fittings (Excess)

8th Floor Staircase Landing

PL 1 x 11W 2 22 - - 19 22


7th Floor Ballantines Lounge Entrance Lobby

Halogen Spot

Lights 12V, 50W 21 1050 - - 43 1050

Working Hours: 6.00 P.M. to 11.30 P.M. Removal of 17 Light Fittings (Replacement to be done).

7th Floor Staircase Landing

PL 1 x 11W 2 22 - - 18 22


6 ½ Floor Staircase Landing

PL 1 x 11W 2 22 - - 25

22

PL 2 x 18W 2 72 - - 72


6th Floor T/T Dept. Lobby

PL 1 x 11W 8 88 - - 45 88



Cricket Stadium (Outdoor)

Metal Halide

Lamps 2 x 320W 52 33,280 - - - 33,280

Working Hours: 3 to 4 Hrs./Day (Lights are kept OFF during monsoon season)

5 ½ Floor Squash Hall - Staircase Landing

PL 1 x 18W 2 36 - - 22

36

PL 1 x 11W 2 22 - - 22


5th Floor Squash Hall - Lobby

PL 2 x 18W 12 432 - - 51

432

FTL Cove 36W 12 432 - - 432

Working Hours: 6.00 P.M. to 11.30 P.M. (All cove lights to be removed, not needed)

4th Floor Gym Area – Lobby & Staircase Landing

PL 2 x 11W 2 44 - - 19 44

PL 2 x 18W 6 216 - - 48

216

PL 2 x 26W 12 624 - - 624


Swimming Pool Side Staircase Landing and Passage

PL 2 x 11W 2 44 - - 18 44

PL 2 x 18W 9 324 - - 45

324

PL 2 x 26W 30 1560 - - 1560

Working Hours: 6.30 P.M. to 12.00 A.M. Midnight

Lobby Area near to trustee office and exit side

Innoba Lights

(CFL) 11W 13 143 - - 42 143


New Building Gr. Floor Lift Side Lobby Area

PL 18W 13 234 - - 42 234


New Building Gr. Floor Lift Side Staircase Landing

PL 11W 2 22 - - 18 22


Swimming Pool Pathway Lights

CFL Bay Light 20W 10 200 - - - 200

Working Hours: 6.30 P.M. to 12.00 A.M. Midnight. (Wattage Reduction)


TENNIS COURT LIGHTING DESIGN


ANNEXURE – III

F&B FREEZERS, REFRIGERATORS, and CHILLERS MEASUREMENTS


DEEP FREEZER CONSUMPTION DETAILS

NEW BUILDING: GROUND FLOOR PAVILION RESTAURANT

Deep Freezer 3 (from RHS)

Date: 20/06/14

Start Time: 5.46 P.M.

Wattage – 808.2

Voltage – 231.0

Ampere – 4.25

Hz – 50

KWH – 0.032

Date: 21/06/14

Stop Time: 12.55 P.M.

Wattage – 776.1

Voltage – 231.0

Ampere – 4.113

Hz – 50

KWH – 9.669

Deep Freezer 1 (from RHS)

Date: 20/06/14


Wattage – 640.8

Voltage – 230.0

Ampere – 3.99

Hz – 50

KWH – 0.011

Date: 21/06/14


Wattage – 555.9

Voltage – 223.0

Ampere – 3.62

Hz – 50

KWH – 6.903

NEW BUILDING: 7th FLOOR MELTING POT RESTAURANT

Deep Freezer-5 (from RHS) F6 - Kitchen

Date: 21/06/14


Wattage – 1203

Voltage – 231.0

Ampere – 6.085

Hz – 50

KWH – 0.018

Date: 22/06/14


Wattage – 1159

Voltage – 240.0

Ampere – 5.16

Hz – 50

KWH – 2.290

Plate Heater Machine - Kitchen

Date: 21/06/14


Wattage – 1175

Voltage – 230.0

Ampere – 5.12

Hz – 50

KWH – 0.024

Date: 22/06/14


Wattage – 1029

Voltage – 239.0

Ampere – 5.09

Hz – 50

KWH – 0.664


NEW BUILDING: 2nd FLOOR BLACK DOG BAR & RESTAURANT

Deep Freezer

Date: 23/06/14


Wattage – 203.9

Voltage – 231.0

Ampere – 1.751

Hz – 50

KWH – 0.002

Date: 23/06/14


Wattage – 190.4

Voltage – 236.0

Ampere – 1.759

Hz – 50

KWH – 0.792

Comments: Air leakage. Gasket problem to be solved


ANNEXURE – IV

POWER ANALYZER DATA OUTPUT


ANNEXURE – V

BUILDING ENERGY MANAGEMENT

SYSTEM DETAILS


ANNEXURE – VI

INDEPENDENT ASSURANCE STATEMENT FROM cBALANCE

cBalance Solutions Hub was retained by Khar Gymkhana to conduct a complete thermal and electrical Energy Audit, as well as a partial Water Audit, as the primary step of an objective to transform the institution into a ‘green club’ through conservation of natural resources and reducing environmental impact of their operations. The Company’s management is responsible for the content of the report. The consultant’s responsibility is to provide assurance on the report content, as described in the scope of assurance. Our responsibility in performing the thermal and electrical Energy Audit, and partial Water Audit is to the management of the organization only, and in accordance with the terms of reference agreed with the client. We do not therefore accept or assume any responsibility for any other purpose or to any other person or organisation. Scope of Assurance and Methodology The scope of our work for this audit is limited to review of information pertaining to energy and water consumption performance and an overall Energy, Water, Cost, and Carbon Footprint Reduction recommendations for Khar Gymkhana club, Mumbai, which are material to the organization’s financial performance. cBalance’s team of professionals visited the Khar Gymkhana’s units in order to collect, process and analyze the data and information presented in the report. The nature and scope of our work was based on our professional judgment and we have performed procedures deemed necessary to provide a basis for our conclusions. The approach to the audit exercise included interaction with key personnel to identify the processes in place to capture energy and water consumption data and for its analysis.


The team conducted collection, process and analysis of data, measurement methodology and general review of the logic of inclusion/omission of necessary information/data to: - Review of major anomaly within the report as well as between the report and source

data/information

- Verification of the transcription of data internally verified by the organization

- Execution of audit trail of selected data streams and information to determine the level of

accuracy in collection, transcription and aggregation processes followed;

- Review of the organization’s plans, policies and practices, pertaining to their energy and

water consumption pattern.

Limitations of our engagement

The assurance scope excludes: - Aspects of the report other than those mentioned above

- Data and information outside the defined reporting period

- Data and information on economic and financial performance of the Company, which are

from the Company’s audited financial records.

Documents

Energy Audit Report Khar Gymkhana - cBalancecbalance.in/.../10/...Report_22Sept2014_v0.5_FINAL.pdf · Energy Audit Report Khar Gymkhana ... Refrigerator and Chiller Systems ... Table