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Case study of an ECBC Compliant, Energy Efficient Building: Aranya Bhawan, Jaipur Prashant Bhanware Indo-Swiss Building Energy Efficiency Project (BEEP) 2 nd REGIONAL WORKSHOP ON ECBC IMPLEMENTATION IN STATES March 15 & 16, 2017 | Hyatt, Ahmedabad

Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

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Page 1: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

Case study of an ECBC Compliant, Energy Efficient Building: Aranya Bhawan, Jaipur

Prashant Bhanware

Indo-Swiss Building Energy Efficiency Project (BEEP)

2nd REGIONAL WORKSHOP ON ECBC IMPLEMENTATION IN STATES

March 15 & 16, 2017 | Hyatt, Ahmedabad

Page 2: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

2Indo-Swiss Building Energy Efficiency Project

Outline of the Presentation

• About Indo-Swiss Building Energy Efficiency

Project (BEEP)

– Overview of BEEP charrettes

• Case study: Aranya Bhawan, Jaipur

• Learnings

Page 3: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

3Indo-Swiss Building Energy Efficiency Project

Indo-Swiss Building Energy Efficiency Project (BEEP)

Phase I: 2012-2016

Phase II: 2017-2021

To assist Government of India

in mainstreaming thermally

comfortable and energy

efficient building design in

India

Page 4: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

4Indo-Swiss Building Energy Efficiency Project

Building Design Design support to large building projects

Energy Efficient Building EnvelopeBuilding

Technology

Design Guidelines for Residential & Public Buildings Building

Policy

Trainings, Seminars , Web , …Training &

Information

Indo-Swiss Building Energy Efficiency Project (BEEP)

Page 5: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

5Indo-Swiss Building Energy Efficiency Project

Energy Efficient Building Design

Hospital Educational campus Residential township

World Trade Centre

Training institute & govt. office

Office & Retail complex

• Technical support to18 building projects (IT buildings, hospital, offices, residential complexes, academic institutions,..)

• >1.4 million m2 built-up area• 25-40% estimated energy savings

Page 6: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

6Indo-Swiss Building Energy Efficiency Project

Integrated Design Charrette Approach for ECBC Compliance

Business As Usual

Passive Measures (Orientation, WWR,

glazing, Shading, Insulation, natural

ventilation, daylight…)

Active Measures (Free cooling, ERW,

Evap. Cooling, Chiller selection &

operation, innovative

technologies,…)

On-site Renewable Energy Generation

Ene

rgy

Co

nsu

mp

tio

n

100%

Net Energy

Minimize heat gain,

Maximize Daylight

Efficient HVAC &

lighting system

Page 7: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

7Indo-Swiss Building Energy Efficiency Project

Integrated Design Charrette Approach for ECBC Compliance

Integrated Design during Early-Design Phase

Page 8: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

8Indo-Swiss Building Energy Efficiency Project

What is Energy Performance Index (EPI)?

Source: BEE Star rating for Office Building & BEE Star rating for BPO

Main Meter

Renewable electricity

Grid Electricity

DG Electricity

Built-up area (m2)

Total electricity (kWh/y)

Built-up area: Total built-up area excluding the basements used for services and/or parking

Page 9: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

9Indo-Swiss Building Energy Efficiency Project

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ESTIMATED ENERGY PERFORMANCE INDEXES OF CHARRETTE PROJECTSEnergy Performance Index (EPI) - kWh/m2.yBefore Charrette

Energy Performance Index (EPI) - kWh/m2.yAfter Charrette

EPI of BEEP Charrette Projects: Commercial Buildings

PUBLIC OFFICE BUILDING PRIVATE OFFICE/IT BUILDING EDUCATIONAL INSTITUTE HOSPITALTRAINING

Page 10: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

Click to edit Master title styleClick to edit Master title style

10Indo-Swiss Building Energy Efficiency Project

CASE STUDY:ARANYA BHAWAN, JAIPUR

Page 11: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

11Indo-Swiss Building Energy Efficiency Project

Jaipur: Climate

Jaipur

Page 12: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

12Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan

• Built-up area: ~10,000 m2 (excluding basement parking and service area)

• Number of floors: Five (G+4) + one basement for parking and services

• Number of users: ~350

• Types of spaces: Offices, museum, library, auditorium, guest rooms

Aranya Bhawan is the new office building of the Rajasthan Forest

Department in Jaipur, inaugurated in March 2015.

Page 13: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

13Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan: Project Timeline

• Client: Rajasthan Forest Department

• Executing Agency: Rajasthan State

Road Development and Construction

Corporation Ltd. (RSRDC)

• Architects: Mathur, Ugam and

Associates

December 2012

•Design Charrette

2013-2015

•Construction

•Technical support by BEEP

March 2015

• Inauguration

2015-2016

•Energy Monitoring

Page 14: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

14Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan: Passive Measures

Roof Insulation

Wall Insulation

Double-Glazed Windows

Reduction in Glazed Area

U-value: 1.8 W/m2.K

SHGC: 0.24

VLT: 36%

U-value: 0.6 W/m2.K

U-value*: 0.5 W/m2.K

Page 15: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

15Indo-Swiss Building Energy Efficiency Project

Reduction in Cooling System Size

0

50

100

150

200

250

Before the charrette After charrette

Cooling system size (TR)

28% reduction

Page 16: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

16Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan: Cooling System

Water Cooled Energy Efficient Chiller (using water after waste water treatment)

Page 17: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

17Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan: Solar Energy Generation

Grid connected rooftop solar PV• Capacity: 45 kWp (annual production:

~60,000 kWh)

Page 18: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

18Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan – Energy Monitoring

• Detailed monitoring of 2 weeks in Winter (Jan.16) & 2 weeks in Summer

(May.16) + Monthly electricity bills for 1 year

Page 19: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

19Indo-Swiss Building Energy Efficiency Project

Monitoring results Aranya Bhawan

Lighting17%

Office Equipment

69%

STP10%

Miscellaneous4%

HVAC0%

Winter (Nov-Feb)

Lighting5%

Office Equipment

26%

STP2%

Miscellaneous7%

HVAC60%

Summer (Mar-Oct)

Lighting6%

Office Equipment

31%

STP3%

Miscellaneous7%

HVAC53%

Annual Energy Consumption

Chiller54%

Primary Pump5%

Secondary Pump10%

CT Fan4%

Condenser Pump12%

AHU15%

Break-up of HVAC energy consumption

Page 20: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

20Indo-Swiss Building Energy Efficiency Project

5.5

5.3 5

.4

5.2

4.6

4.5

3.9

3.4

3.3

3.2

3.9

4.5

6.1

6.7

5.7

4.9

5.3

3.4

1.1 1.2 1

.3 1.4

2.0

3.9

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

May-15 Jun-15 Jul-15 Aug-15 Sep-15 Oct-15 Nov-15 Dec-15 Jan-16 Feb-16 Mar-16 Apr-16

kWh

/m2.m

on

th

Monthly EPI Comparison: Simulated vs. Actual

Simulated EPI Actual EPI

Electricity Consumption: Simulation & Actual (EPI)

Actual EPI: 43 kWh/m2.yearBEE 5 star benchmark: 90 kWh/m2.year

Page 21: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

21Indo-Swiss Building Energy Efficiency Project

Aranya Bhawan: Overall Cost and Performance Summary

Page 22: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

22Indo-Swiss Building Energy Efficiency Project

ECBC Compliance

Buildings applying for ECBC Compliance

Meet Mandatory Provisions

Prescriptive Method

All building components need to comply the code individually

Other building components need to comply the code individually

Envelope Trade-off Method

Whole Building Performance Method

Annual Energy Simulation of Whole Building

kWhproposed ≤ kWhprescriptive

Allows trade-off among envelope components (Wall, Roof & Fenestration) based on total Envelope Performance Factor

EPFproposed ≤ EPFprescriptive

Page 23: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

23Indo-Swiss Building Energy Efficiency Project

ECBC Compliance of Aranya Bhawan: Whole Building Performance Method

ECBC Prescreptive* Proposed#

Opaque Wall U-value (W/m2.K) 0.44 0.5

Roof U-value (W/m2.K) 0.409 0.6

Fenestration- SHGC- VLT- U-value (W/m2.K)

0.250.273.3

0.240.361.8

LPD ("building area method") (W/m2) 10.8 7

HVAC: Centralised system - Water cooled screw chiller (COP)- AHU

4.7Constant volume

5.8Constant volume AHUs + FCUs

*Day use office building in Composite climate; Glazing distributed in all 4 sides equally; Baseline model simulated for 0, 90, 180 & 270 degree orientation and average value taken

#Same building operation assumptions (thermostat setpoints, schedules, internal gains, occupant loads, etc.); Finalized based on calibrated energy simulation model

Page 24: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

24Indo-Swiss Building Energy Efficiency Project

ECBC Compliance of Aranya Bhawan

5,13,657

4,04,554

2,95,245

-

1,00,000

2,00,000

3,00,000

4,00,000

5,00,000

6,00,000

ECBC Prescriptive(Simulated)

Proposed(Simulated)

Actual(Measured)

kW

h/y

Annual Energy Consumption

An ECBC compliant building design:

~20% energy saving

Net Grid Electricity consumption to

reduce by 60,000 kWh/y (Estimated

generation from 45 kWp SPV system)

Page 25: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

25Indo-Swiss Building Energy Efficiency Project

Learnings

• The approach for energy efficiency/ECBC

compliance should always be reducing the

demand first through passive measures, use

efficient systems with controls and then

integrate renewable energy system.

• Integrated approach at early design stage for

energy efficiency results in 20-40% energy

savings. Charrettes help in estimating the

techno-economics of energy efficiency measures;

helping in decision making and identifying

acceptable measures for implementation; thus

help in achieving ECBC compliance.

Page 26: Case study of an ECBC Compliant, Energy Efficient Building ......ECBC Compliance of Aranya Bhawan 5,13,657 4,04,554 2,95,245 -1,00,000 2,00,000 3,00,000 4,00,000 5,00,000 6,00,000

Click to edit Master title styleClick to edit Master title style

26Indo-Swiss Building Energy Efficiency Project

THANK YOU !!!

To download BEEP publications, know about BEEP charrettes and to apply for a charrette, please visit

www.beepindia.org