Energy Audit Report-Water Treatment Plant, Duliajan · PDF fileNigeria, Sudan and Venezuela ... • Computation and in-depth analysis of the collected data, ... (including % Total

Energy Audit by Petroleum Conservation Research Association, ER Page -1 -

OF

Conducted By

(EASTERN REGION)

2, Gariahat Road South, Dhakuria Kolkata – 700 068

Ph: 033 – 2414 5092, 2414 5088, 2414 5094; Telefax: 033 – 2414 5091 e-mail: [email protected]

Website: http://www.pcra.org



Contents

Executive Summary-----------------------------------------------------------------------------------------------4

Chapter 1. Introduction ................................................................................................................................................ 5

1.1. The Project ----------------------------------------------------------------------------------------------------------------- 6

1.2. Scope of Work ------------------------------------------------------------------------------------------------------------ 6

1.3. Methodology --------------------------------------------------------------------------------------------------------------- 7

1.4. Instrumentation Support ------------------------------------------------------------------------------------------------ 7

Chapter 2. Base Line Data ........................................................................................................................................... 8

2.1. Power Consumption Pattern ------------------------------------------------------------------------------------------- 9

2.2. Recommendation --------------------------------------------------------------------------------------------------------- 9

Chapter 3. Study of Pumping Systems .................................................................................................................... 10

3.1. Systems Installed ------------------------------------------------------------------------------------------------------- 10

3.2. Pontoon Water Pump ------------------------------------------------------------------------------------------------- 10

3.3. Filtered Water Pumps ------------------------------------------------------------------------------------------------- 13

3.4. Back wash Pumps ----------------------------------------------------------------------------------------------------- 15

Chapter 4. Study of Lighting Systems ...................................................................................................................... 17

4.1. Systems Installed ------------------------------------------------------------------------------------------------------- 17

4.2. Operational Load ------------------------------------------------------------------------------------------------------- 18

4.3. Recommendations ----------------------------------------------------------------------------------------------------- 19

Chapter 5. Study of Air Compressors ...................................................................................................................... 21

5.1. Installed System -------------------------------------------------------------------------------------------------------- 21

6.2 Operational Performance - Compressor Tests ----------------------------------------------------------------22

6.4. Recommendation ------------------------------------------------------------------------------------------------------- 23

Annexure: List of Suppliers------------------------------------------------------------------------------------------------24


Executive Summary

Petroleum Conservation Research Association (PCRA) was entrusted by the Oil India Limited (OIL), the

Energy Audit of their Water Treatment plant at Tipling, Duliajan, Assam.

The basic objective of the Energy Audit was to study the load distribution/ consumption pattern in the

Stations and also to study the operations of major energy intensive equipment/ systems to identify

potential areas wherein energy savings are practically feasible.

Based on our observations of the various areas, we have identified certain potential areas for energy

conservation, which are summarized below:

Summary of Anticipated Savings and Investment

Area of savings Savings / annum Annual

Savings

(Rs. Lacs)

Investment

(Rs. Lacs)

Payback

period kWh KL

Installing Energy Meter at the

installation -- -- -- Nominal --

1.0 Replacement of one existing

200m head pump with 80m head

pump with flow of 1000 m3/hr

pump which will be fixed in the

same motor. OR

2997847 136.40 3 0.26

Months

Procure a new 80 meter head

pump Set with flow of 1000 m3/hr

pump and a 280 KW HT motor. 2997847 136.40 30.0

2.6

Months

2.0 Replacement of existing 36W

FTL and GLS lamps with Energy

Efficient T-5 FTLs in Plant Area

20332.2 -- 0.92 0.76 10.0

months

Total 3018179 137.32 3.76 / 30.76 --


CHAPTER-1 INTRODUCTION

The story of Oil India Limited (OIL) traces and symbolizes the development and growth of the

Indian petroleum industry. From the discovery of crude oil in the far east of India at Digboi,

Assam in 1889 to its present status as a fully integrated upstream petroleum company, OIL

has come far, crossing many milestones.

On February 18, 1959, Oil India Private Limited was incorporated to expand and develop the

newly discovered oil fields of Naharkatiya and Moran in the Indian North East. In 1961, it

became a joint venture company between the Indian Government and Burmah Oil Company

Limited, UK.

In 1981, OIL became a wholly-owned Government of India enterprise. Today, OIL is a premier

Indian National Oil Company engaged in the business of exploration, development and

production of crude oil and natural gas, transportation of crude oil and production of LPG. OIL

also provides various E&P related services and holds 26% equity in Numaligarh Refinery

Limited.

The Authorized share capital of the Company is Rs. 2000 Crores. The Issued, Subscribed and

Paid share capital of the company is Rs. 601.14 Crores. At present, The Government of India,

the Promoter of the Company is holding 78.43% of the total Issued & Paid-up Capital of the

Company. The balance 21.57% of the Equity capital is held by others.

OIL has over 1 lakh sq km of PEL/ML areas for its exploration and production activities; most

of it is in the Indian North East, which accounts for its entire crude oil production and majority

of gas production. Rajasthan is the other producing area of OIL, contributing 10 per cent of its

total gas production.

Additionally, OIL’s exploration activities are spread over onshore areas of KG Basin, Mahanadi

Basin, Cauvery Basin, Andaman Basin and Gujarat-Kutch Basin etc. OIL also has participating

interest in NELP exploration blocks in Mahanadi Offshore, Mumbai Deepwater, Krishna

Godavari Deepwater, etc. as well as various overseas projects in Libya, Gabon, Iran, Yemen,

Nigeria, Sudan and Venezuela.

In a recent CRISIL-India Today survey, OIL was adjudged as one of the five best major PSUs

and one of three best energy sector PSUs in the country.


1.1 Objective of Energy Audit:

With the advent of energy crisis and exponential hikes in the costs of different forms of energy, Energy Audit is manifesting its due importance in Industrial Establishments. Energy Audit helps to understand more about the ways energy and fuels are used in any Establishment and helps in identifying areas where waste may occur and scope for improvement exists.

Energy Audit is the key to a systematic approach for decision-making in the area of energy

management as it attempts to balance the total energy inputs with its use and serves to

identify all the energy streams in a facility/ Establishment.

It was with this objective that Petroleum Conservation Research Association (PCRA) was

entrusted by OIL, the Energy Audit of Water Pumping and Filtration unit at Tipling, Duliajan.

Function of the Installation:

The functions of Water Treatment Plant are to carry out:

1) Pumping of raw water from River Burhi Dihing at Pontoons.

2) Filtering the raw river water using chemicals like alum, lime, sodium aluminate and

infrastructures like pre-settler, clariflocculators and rapid gravity filter beds.

3) Storing filtered treated water in an underground reservoir at the plant.

4) Supply (Pumping) of filtered treated water to OIL Township, Duliajan and nearby OIL’s

Installations.

1.2 Scope of Work:

The objective of the Energy Audit was to study the load distribution/ consumption pattern in

the Stations and also to study the operations of major energy intensive equipment/ systems to

identify potential areas wherein energy savings are practically feasible.

Electrical Equipments

Measurement of all major electrical parameters viz. voltage, current, power factor, power

drawn, operating frequency etc. on energy intensive equipments (motors, air

compressors, lighting etc) for evaluation of their loading patterns, operating performance

etc.

Pumps

Study of Pump Operations and the corresponding energy consumption to assess the

scope for improvements.

Lighting

The entire Lighting system audit covered the Illumination levels required vis-à-vis

available lux levels.

Performance evaluation in terms of efficacy levels of various lighting fixtures including

Tube lights, HPSV Lamps installed.


1.3 Methodology

Methodology adopted for achieving the desired objectives viz. Assessment of the Current

operational status and Energy savings include the following:

Discussions with the concerned officials for identification of major areas of focus and other

related systems.

• A team of engineers visited the

pumping station and had

discussions with the concerned

officials/ supervisors to collect data/

information on the operations and

Load Distribution in the pumping

station. The data was analyzed to

arrive at a base line energy

consumption pattern.

• Measurements and monitoring

with the help of appropriate

instruments including continuous

and/ or time-lapse recording, as

appropriate and visual observations

were made to identify the energy

usage pattern and losses in the

system.

• Computation and in-depth analysis of the collected data, including utilization of

computerized analysis and other techniques as appropriate were done to draw inferences

and to evolve suitable energy conservation plan/s for improvement / reduction in specific

energy consumption.

1.4 Instrumentation Support:

Some of the instruments used for undertaking the audit include the following:

� Electrical Power Analyser for Power measurements;

� Ultrasonic Flow meter;

� Non-Contact Type Temperature Indicator;

� Digital Lux Meter;

Develop a Base Line of the Energy Consumption Pattern

Obtaining Energy Consumption data from the Plant

On Site Measurements based on the Mutually Decided Action Plan

Active involvement of

the Plant

Draft Report Submission

Plant Feedback

Final Report Submission


CHAPTER-2 BASE LINE DATA

General Details:

A

Brief description of assignment : Detailed Energy Audit of Electrical Systems /

Utility Equipments.

Name & Address of Installation : Water Treatment Plant, Tipling,

Oil India Limited,

Duliajan, Assam-786602

Contact person : Shri Sandeep Bhuyan, Installation Manager,

4MGD Water Treatment Plant

Telephone No. : 0374-2808338

Name of PCRA Team Leader

Members of the Team

: Shri A.Chakraborty , Jt. Director, CEA

Shri D. Mahapatro, Dy. Director, CEA

Shri D. Datta, Jt. Director,CEM

Address of communication of PCRA Petroleum Conservation Research

Association, IndianOil Bhawan,

2, Gariahat Raod South, Dhakuria,

Kolkata – 700 068

Ph: 033 – 2414 5092/5088/5094;

Telefax: 033 – 2414 5091

e-mail: [email protected]

Website: http://www.pcra.org

B

Activity : Filtration and Pumping of Water

C

Operational days : 7 days a Week (24 hrs a Day)

No. of shifts : Three

Power Generation & Consumption

(Average per month based on historical

data)

: Required power is met from captive power

plant at Duliajan

For measuring Industrial Consumption, meter

is not installed at the plant.

Supply Voltage : 415 V

Overall Electric Power Rate : Rs 4.55 per kWh


2.1 Power Consumption Pattern:

Power is generated in-house at Duliajan Power Station from OIL’s own produced Natural gas.

The 3.3 KV HT power is distributed centrally and power in the plant is drawn through a

transformer of 3.3 KV to 415 V.

It was observed that there is no energy meter to measure the consumption of energy in

Tipling Water Treatment Plant. So the monthly Power Consumption of the station could not

be determined. Power consumption for one instant at evening along with measurement of all

electrical parameters (including % Total Harmonic Distortion) was carried out at the

transformer. The measured data is tabulated below.

500 KVA 3.3 KV / 415 V Transformers:

500 KVA Transformer Reading( Cable-A)

Line Voltage Current Power

Factor Power Total

V1, Volt 220.4 I1 Amp 8.88 Pf1 0.72 P1, kW 1.409 Pt, kW 4.21

V2, Volt 221.4 I2 Amp 7.89 Pf2 0.59 P2, kW 1.031 Qt, kVAr 5.19

V3, Volt 220.1 I3 Amp 13.86 Pf3 0.58 P3, kW 1.769 St, kVA 6.68

Freq., Hz 50 Avg Pf = 0.63

500 KVA Transformer Reading( Cable-B)


Factor Power Total




Freq., Hz 50 Avg Pf = 0.63

The total Power demand for the plant is 8.4 Kwh and the transformer load is 13.3 KVA.

Therefore, the transformer loading is 13.3/500 = 3%

2.2 Recommendations:

1. One Energy Meter to be installed to measure the daily/monthly consumption of

Electrical energy (in KWH) for Water Treatment Plant.

2. It was observed that in main phase R &Y the load is more or less balanced but in the B Phase the

load is high. It is therefore advised to distribute the load uniformly in three phases.


CHAPTER-3 STUDY OF PUMPING SYSTEMS

3.1 Systems Installed:

There are three types of Electrical Motor Driven (EMD) pumps avaliable in the plant

1. Pontoon Water Pumps (5 nos.)

2. Filtered Water Pumps (4 nos.)

3. Backwash Pumps (2 nos.)

3.2 Pontoon Water Pump:

There are five EMD Pontoon water Pumps available in the pontoon for pumping water from River

Burhi Dihing to Inlet chamber of water treatment plant. The power consumed by the pumps was

measured by Three Phase Power Analyzer and discharge flow was measured with Ultrasonic flow

meter.

Pump Specifications:

Operational Performance of pumps:

Parameter Units SPP#1 SPP # 2 BPP # 1 BPP # 2 BPP # 3

Flow m3/hr 150.7 194 580.7 603.5 654.8

Discharge Head m 42.0 44.0 20.0 20.0 20.0

Suction Head m 0 0 0.00 0.00 0

Density kg/m3 1000 1000 1000 1000 1000

Input Power kW 66.93 76.66 74.54 66.32 74.33

Engine Efficiency % 90% 90% 90% 90% 90%

Pump Specifications Small Pontoon Pump (SPP)

Big Pontoon Pump (BPP)

Make Mather & Platt Mather & Platt

Pump Type Centrifugal Centrifugal

Max. Disch Press (Kg/Cm

2)

4.2 NA

Design Flow rate (m3/Hr) 500 750


Pump Shaft power kW 60.237 68.994 67.086 59.688 66.897

Pump Hyd. power kW 17.248 23.261 31.648 32.891 35.687

Pump Efficiency % 28.63 33.71 47.18 55.10 53.35

The flow rate of one Diesel Engine driven pump is also measured at 11.628 m3/2 min i.e. 348.8

m3/Hr

Pump- Motor Power measurement Data

Riverside Small Pontoon Pump No :1

Line Voltage Current Power Factor Power Total




Freq., Hz 50.0 Avg Pf = 0.883

Riverside Small Pontoon Pump No :2





Freq., Hz 50.0 Avg Pf = 0.860

Riverside Big Pontoon Pump No :3





Freq., Hz 50.0 Avg Pf = 0.870






Freq., Hz 50.0 Avg Pf = 0.817







Freq., Hz 50.0 Avg Pf = 0.897

Motor Loading Details:

% Load = Pi/Pr X 100 where Pi= Input Power (Measured) and Pr= Rated Power at full load

Sl

No

Motor

Details

Rated

Motor

Power

(Kw)

Actual Input

Power

(Measured) (Kw)

Motor Loading

(%)

1 SPP#1 75 66.93 89.24

2 SPP#2 75 76.66 102.21

3 BPP#1 75 74.33 99.11

4 BPP#2 75 66.32 88.43

5 BPP#3 75 74.54 99.39

Observation and Recommendations:

1. The flow of small pontoon pump #1 is giving lower flow than Pump#2. It is suggested

to get the pump internally checked. Suspected impeller problem as it is taking less

power as well.

2. It is observed that there is no check valve at the discharge of the pontoon pumps. This

is causing pump to rotate in the reverse direction while opening the discharge valve of

the pump before starting for pressurization. It is recommended to have a small 1” line

with an isolation valve across the discharge valve to be used for pump pressurization

and the discharge valve to be opened only after starting the pumps. A pressure gauge

can be installed in the pump casing to indicate the pressurization of the pump. This

will avoid the reverse rotation of the pump at the time of startup which is causing

huge starting current of the pumps.

3. Big Pontoon pump #3 cables were found to be in hot condition. It is recommended to

check the cable condition and joints to avoid leakage and short circuit.


3.3 Filtered Water Pumps: Four numbers

Specifications:

Operational Performance of pumps:

Particulars Unit FWP # 1 FWP # 2 FWP # 3

Flow m3/hr 350.000 321.960 403.200

Discharge Head m 33.0 34.0 35.0

Suction Head m 0.00 0.00 0.00

Density kg/m3 1000 1000 1000

Input Power kW 162.70 182.33 168.30

Motor Efficiency % 95% 95% 95%

Pump Shaft power kW 154.565 173.214 159.885

Pump Hyd. power kW 31.474 29.830 38.455

Pump Efficiency % 20.36 17.22 24.05

Pump #4 was not started as discharge valve got stuck in closed position at the time of audit.

Cummins Diesel engine operated Pump flow was tested while other two electrical pumps were

running in parallel. The flow was measured at 4.652 m3/ min = 279.1 m

3/hr while discharge pressure

was 7.5 Kg/Cm2.

Pump Particulars

Make Mather & Platt

Head (M) 200

Capacity (m3/hr) 324

Motor Particulars

Make NGEF

Power, KW (HT:3.3 KV) 280

Voltage ( Volts) 3300

Current ( Amps) 64

Efficiency 82%


Observations:

1. 3 nos. filtered water pumps are generally operated for 24 hrs to supply average 910 m3/hr

filtered water by 16” Filtered water line. The Line pressure was found to be 7.5 Kg/Cm2.

2. The pump discharge valves are kept at max 40% open to avoid the motors of the pumps to trip

as per operations. This is due to high design discharge head of the pump than actual discharge

head.

3. The pump design head is 200m. As per the data supplied, the max static head (Height of tank

where water pumping to be done) is 25meter. The friction head available for the pump is 200-

25= 175 meter. The length of the pipe line is 9000 meters with 16” 20 schedule MS pipeline.

4. In present scenario, the discharge head is considered as 80meter. Therefore, friction head is

80-25=55 meters as static head remain fixed at 25 meters.

5. The present velocity of water in the pipeline is

4fLV2L/2gD= Frictional Head where f is pipeline constant = 0.006, V=Velocity, L=Length of

pipeline, D= Diameter of pipeline

V2= 55 X 2X9.81X0.410/(4X0.006X9000) = 2.04

V = 1.43 m/sec.

6. In the 20 schedule pipeline the max allowable pressure is 47 Kg/Cm2 but the limiting factor is

pump discharge head. The max frictional head allowed with the pump is 200-25= 175meters

7. The max allowable velocity which will generate the 175 meter friction head is 2.55 m/sec.

8. The max flow possible in the pipeline is 1211m3/hr at 175 meter of head.

Recommendation:

1. The present head of the pipeline is 80 meter. If a pump of 80 meter head can be installed

in place of 200m head pump with the same motor of 280 Kw (output power), a flow rate

of 899 m3/hr can be achieved with one pump saving the power of two pumps i.e 342.22

Kwh. Therefore, yearly power savings is 342.22 X24 X365 = 2997847.2 Kwh

= 2997847.2 X Rs. 4.55 = Rs.1,36,40,205/-

= 1.36 Crores(approx.)

(Instead of 3 pumps, only 1 pump will be utilized resulting in substantial saving of

power)

Calculation:

Motor output power is 280Kw. Power available for pump shaft is 280 x 0.7 = 196 Kw

(Considering pump efficiency is 70%)

Flow (m3/hr) = 196 X 3600 X 1000/ (80X1000X9.81) = 899 m

3/hr


Payback:

The Cost of 1000 m3/hr, 80 meter head pump approximately is 3 lakhs. (as per price

information from M/s. Debsons Pumps who is a dealer for Kirloskar Pumps)

Payback period is 0.26 months.

2. In place of changing the existing pump, one set of 80 meter head pump and a 280 KW HT

motor if procured, the power saving will be same as the recommendation no:1, i.e. yearly

Rs.13640205/-

Payback:

Invest in this option is the cost of pump and the motor. The cost of pump is around 3

Lakhs and the 280 KW HT motor of 95% efficiency is around 27 Lakhs.

Therefore, the payback period is 3000000/13640205 = 2.63 Months.

Note: (a) Initially only one no of Pump/Pump Set as above is advised to be replaced and the

result is to be monitored. Once the Energy saving is established, then only action is

to be initiated for replacement action of the other Pump/Sets.

(b) User Department is advised to take decision regarding replacement of Pump

/Pump Set based on operational requirement/ convenience.

3.4 Backwash Pump:

There are two backwash pumps in the filter house of the Water Treatment plant.

Out of the two pumps one operates at a time for 2 to 3 hours in a shift for backwashing of

the water filter.

Power Measurement Data:

Backwash Pump No :1


Factor Power Total




Freq., Hz 50.0 Avg Pf = 0.773


Backwash Pump No :2


Factor Power Total




Freq., Hz 50.0 Avg Pf = 0.867

Pump Performance:

Motor Load Details:

Observations and recommendations:

1. The pump efficiencies are below normal. But considering the less running hours of pumps,

replacement of pumps are not recommended.

2. The motor loading is Ok.

3. It is advised to provide Pressure Gauge at the common discharge of the pumps to monitor

the pumps performance on periodical basis.

Particulars Unit BWP # 1 BWP # 2

Flow m3/hr 139.300 128.300

Discharge Head m 6.0 6.0

Suction Head m 0.00 0.00

Density kg/m3 1000 1000

Input Power kW 7.56 8.25

Motor Efficiency % 85% 85%

Pump Shaft power kW 6.426 7.013

Pump Hyd. power kW 2.278 2.098

Pump Efficiency % 35.44 29.91

Sl No Motor

Details

Rated

Motor

Power (Kw)

Actual Input

Power

(Measured) (Kw)

Motor Loading

(%)

1 BWP#1 12.5 7.56 60.48

2 BWP#2 12.5 8.25 66.00

17

CHAPTER-4 STUDY OF LIGHTING SYSTEMS

4.1 Systems Installed:

WATER TREATMENT PLANT AREA WISE LIGHTING DETAILS:

SL.No LOCATION 36W

T/LIGHT

18W

T/L

100W

BULB

250W

SON

1 ELECTRICAL CFS LT PENAL 8

2 BACKWASH PUMP SHED 6

3 AIR COMPRESSOR SHED 2

4 FILTER BED 24

5 PUMP HOUSE 26

6 S/STATION 14

7 FILTER HOUSE 44

8 FILTER HOUSE BACK SIDE WALL 0 6

9 AREA LIGHT 0 5

10 FILTER HOUSE STAIRCASE 3

11 CHEMICAL LAB 4

12 TOILET 2

13 INSTALLATION MANAGER 2

14 CHEMICAL HOUSE CORIDOOR 2

15 CHLORINE PUMP HOUSE SHED 16

16 LIME HOUSE 12

17 LIME GODOWN 8

18 OUT SIDE TOILET 0 2

19

CHEMICAL LIME MIXING SHED OUT

SIDE WALL 0 6

20 DIESEL ENGINE SHED 2

21 WATER MANIFOLD 2

22 KITCHEN 0 1

TOTAL NUMBER OF LIGHTS 177 2 13 5

8850 64 1300 1360

TOTAL KW LOAD INCLUDING CHOKE 11.57

TOTAL AMPS 55.38

18

4.2 Operational Load

Measured Lux Levels:

Location

Measured Lux Level

Remarks Max Min Avg.

HT Panel Room 62 31 40.8 Needs improvement

500 KVA Transformer Room

33 20 27.5 Needs improvement

Chemical House Panel Room

92 54 74 Illumination Normal

Chemical House Stair Case 203 59 123.2 Light is more than required.

Chemical Laboratory 51 36 43.5 Needs improvement

Corridor in front of Lab 70 52 61 Light is more than

required.

Chemical Addition Room (1

st Floor)

269 45 141.6 Illumination Normal

Chemical Addition Room (2nd Floor)

115 50 82.8 Illumination Normal

Filter House (1st Floor) 157 2 104.8

Illumination Normal except the area where lights are not glowing (13 nos lights)

Filter House Gr. Floor 159 27 95.6


Filtered Water Pump House 60 1 20.1


Air Compressor House 105 31 54.1 Needs improvement

Area Side of Clarifier 2 1 1.5 Needs improvement

Chemical Storage Area (Gr. Floor)

2 0 1.5


Chlorine Neutralisation Plant (Gr. Fl)

49 12 32.2 Needs improvement

Road in front of Admin Block

1 0 1 Needs improvement

19


Installation of Energy Efficient Lights:

It is suggested to replace some of the existing lights in Plant with energy efficient systems

as follows:

� Existing tube lights of 36 W / 40 W to be replaced with Energy Efficient Lights (T-5/

equivalent)

� 100 W GLS lamps in plant to be replaced by 28 W T5 FTL.

� It is also recommended to install solar power LED lights in the roads, presently lit by

250 HPSV lights. The present light is not sufficient.

The resultant benefit in terms of Energy Savings has been worked out as follows:

ENERGY SAVINGS IN ILLUMINATION BY REPLACEMENT OF LAMPS

Particulars Present Situation Post Implementation

Conventional tube lights of 36 W may be replaced with Energy Efficient (EE) Lights (T-5 or equivalent)

Power drawn per tube light (Watts) 50 29

No of lights to be replaced 177

Net Reduction in the Power drawl (A) (Watts) 3717

Conventional GLS bulbs (100 W) may be replaced with 28W EE T-5 FTL

Power drawn per light (Watts) 100 29

No of lights to be replaced 13

Net Reduction in the Power drawl (C) (Watts) 923

Total reduction in Power Drawl (kW) 4.64

Working Hours per annum 12 hrs x 365 4380

Energy Savings per annum (kWh) 20323.2

Electric Power Rate (Rs./kWh) 4.55

Monitory Benefit Rs. 92470.56

Estimated Investments Rs. 76000

EE T5 Tube Lights @ Rs 400 / with fittings 77500

Simple Payback Period 9.86 ~10 months.

20

Details of Solar Street Light installation:

The Cost of Installing 20W LED Solar Power Lights with 120 AH in the road is as below:

Approx Cost of 20W LED Solar Power Fittings with pole is 20000/-

Govt. subsidy obtainable from Central Govt Ministry of Non conventional Energy is 30% of

the installation cost under JNNSM.

Actual Cost of Installation of each light is Rs.14000/-

Power consumption per light per year is 20 X 12 X 365/1000 = 87.6 Kwh

Cost of running of one street light is 87.6 X Rs.4.55 = Rs. 398.6 ps

Note: It is recommended to appoint Govt. approved contractors who will install the lights

after availing the subsidy.

21

CHAPTER-5 Study of Air Compressors

5.1 System Installed:

There are two air compressors in the unit for use of air during back washing of filters. The details

of the compressors are as below:

Make Ingersol Rand Atlas Copco

Max allowable press 7.5 Bar 10 Bar

Motor Power 22 Kw 22 Kw

Capacity 3.54 m3/min 41.5 lps

Amps 43 NA

Volts 400 400

Power Drawn During Load

IR Compressor

Line Voltage Current

Power

Factor Power Total




Freq., Hz 50.0 Avg Pf = 0.903

Atlas Copco Compressor

Line Voltage Current

Power

Factor Power Total




Freq., Hz 50.0 Avg Pf = 0.843

22

5.2 Free Air Delivery Test:

Particulars Unit Air Comp-1(IR) Air Comp-2 (Atlas Copco)

Initial Pressure (P1) kg/cm2a 0.56 0.56

Final Pressure (P2) kg/cm2a 5.6 5.6

Atmos. Pressure (P0) kg/cm2a 1.01 1.01

Receiver Volume (V) m3 0.50 0.50

Time Taken (T) minutes 0.73 1.02

Ambient Temp. (t1) oC 20 20

Discharge Temp. (t2) oC 25 25

Air generated during test lpm 3431.908 2456.988

Rated lpm

Delivery FAD (Q1) lpm 3374.326 2415.763

Power Drawn (Measured) kW 21.06 15.71

Sp. Power Consumption kW/lpm 0.00624 0.00650

Compression Ratio (r) 5.5 5.5

Isothermal Power kW 13.417 9.605

Motor Drive Efficiency % 90.00% 90.00%

Isothermal Efficiency % 63.71% 61.14%

NOTE: All the formulae used for the above calculations are:

Actual Free air discharge, Q = 35.315 x ( P2 – P1 ) x V CFM P0 x T

Where

P2 = Final pressure after filling (kg/cm2a)

P1 = Initial pressure (kg/cm2a) after bleeding

P0 = Atmospheric Pressure (kg/cm2 a)

V = Storage Volume in M3 which includes receiver, after cooler and delivery piping

T = Time taken to build up pressure to P2 in minutes

In case the actual compressed air temperature at discharge, say t2°C is higher than ambient air temperature say t1°C (as is usual case),

The FAD is to be corrected by a factor (273 + t1) / (273 + t2).

Specific Power Consumption = Power consumed (kW) / Air generated (CFM)

Compression Ratio, r = Final Pressure/ Suction Pressure (both the pressures in same unit).

23

Isothermal power (kW) = P1 x Q1 x (loger) / 36.7

P1 = Absolute intake pressure kg/ cm2 Q1 = Free air delivered m

3/hr.

r = Pressure ratio P2/P1

Isothermal efficiency = Isothermal Power (kW)___

Actual Measured Input Power (kW)


The compressors are used only for filter backwashing and not run regularly as there is no

other compressed air requirement. Hence there is no necessity for any change in the

compressed air system.

24

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Product/ Equipment Contact Details

LED lighting Synergy Solar (P) ltd SCO 133, sector 28D, Chandigarh Ph 0172-6451133 www.synergysolars.com

Lighting Systems Philips India Ltd Regional office-North, 9th floor Ashoka Estate, 24, Barakhamba Road New Delhi – 110 001 Telephone No.: 3353280, 3317442, Fax No.: 3314332

Lighting Systems Crompton Greaves Ltd. Lighting Business Group, 405, Concorde, RC Dutt Road, Baroda – 390 007

Lighting Systems OSRAM India Ltd. Signature Towers, 11th Floor, Tower B, South City-I, Gurgaon 122001, Haryana Tel: 0124- 6526175, 6526178, 6526185 Fax: 0124- 6526184

Lighting Systems Asian Electronics Surya Place, First Floor, K-185/1, Sarai Julena, New Friends Colony, New Delhi – 110 025

Lighting Systems Asian Electronics Surya Place, First Floor, K-185/1, Sarai Julena, New Friends Colony, New Delhi – 110 025

Lighting Systems Philips India Limited , Technopolis Knowledge Park, Nelco Complex, Mahakali Caves Road, Chakala, Andheri (East), Mumbai 400 093. Tel : 022 56912000

Lighting Systems Surya Roshni Ltd. Padma Tower-I, Rajendra Palace, New Delhi 110 006.

Lighting Systems Wipro Limited Sco 196-197, Sector 34-A, Chandigarh - 160 022

Lighting Systems OSRAM India Ltd. Signature Towers, 11th Floor, Tower B, South City-I, Gurgaon 122001, Haryana Tel: 0124- 6526175, 6526178, 6526185 Fax: 0124- 6526184

Note: - The suppliers mentioned above are not the only ones or the best in the market. The plant

may contact other suppliers for competitive rates/ specifications.

Documents

Energy Audit Report-Water Treatment Plant, Duliajan · PDF fileNigeria, Sudan and Venezuela ... • Computation and in-depth analysis of the collected data, ... (including % Total