SUSTAINABILITY

Jai Vardhan YadavSustainability consultantAECOM India Pvt. ltd.

“Sustainability programme for the benefits and awareness of the students”G B Pant Polytechnic, Okhla New Delhi

Effectively, the provision of energy such that it meets the needs of the present withoutcompromising the ability of future generations to meet their own needs.

Dynamic harmony between equitable availability of energy-intensive goods andservices to all people and the preservation of the earth for future generations." And,"the solution will lie in finding sustainable energy sources and more efficient means ofconverting and utilizing energy."

– J. W. Tester

GREEN BUILDINGS…..

"A green building uses less energy, water and natural resources, creates lesswaste and is healthier for the people living inside compared to a standardbuilding”

– Indian Green Building Council (IGBC)

Conserves Energy

Saves Water

Uses Environmentally Sensitive Material

Provides Productive Indoor Environment

Generates Less Waste & Pollution

Patni ComputersPlatinum Rating

CII, HyderabadPlatinum Rating

Wipro Tech., Gurgaon

Platinum RatingITC, Gurgaon

Platinum RatingSpectral Services, Noida

Platinum Rating

GREEN BUILDING RATING SYSTEMS

Defines Building design parameters

Third Party validation

Recognizes achievement

Transform markets to eco-friendly designs

International benchmark of quality &

“greenness”

Marketability

8/21/20138/21/2013

Overview Sustainable Sites Energy & Atmosphere Indoor Env. QualityWater Efficiency Material & Resources

In India,

Green Building Movement has been started by

LEED-India New Construction

New Construction/ Major Renovation for owner occupied buildings

LEED-India Core & Shell

Rented/ Leased Commercial Buildings

IGBC Green Homes

New Residential Buildings

IGBC Green Factories

Industrial Buildings

IGBC Green SEZ

SEZs

IGBC Green Townships

Townships and Large developments

IGBC Green Landscapes

RATING SYSTEMS OFFERED BY INDIAN GREEN BUILDING COUNCIL

Water efficiency

Indoor Environmental Quality

Energy & Atmosphere

Material & Resources

WHAT ARE THE FOCUS AREAS OF THE LEED RATING SYSTEM?

Innovation and Process

Sustainable Site

Traditional Indian Buildings & Green Buildings…..

Common Features

TraditionalIndian Building

Modern Green Building

Courtyard for natural ventilation and daylighting

TraditionalIndian Building

Modern Green Building

Well lit interiors with minimum openings

TraditionalIndian Building

Modern Green Building

Shading devices

TraditionalIndian Building

Modern Green Building

Jali for shading & natural ventilation

TraditionalIndian Building

Modern Green Building

Wind catchers for natural air conditioning

TraditionalIndian Building

Modern Green Building

Insulated roof

TraditionalIndian Building

Modern Green Building

Rainwater harvesting system

Weather data analysis

Natural ventilation analysis

Thermal comfort analysis

Day light analysis

Views analysis

Building thermal analysis

Building energy analysis

HOW TO START?

SOFTWARE AND TOOLS

-10

LEGENDTemperatureRel.Humidity

Direct SolarDiffuse Solar

Wind Speed Cloud Cover

WEATHER DATA ANALYSIS

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st December

-10 -10

0 0

10 10

20 20

30 30

40 40

°C °CDRY BULB TEMPERATURE - ABU DHABI, ARE

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st December

-10 -10

0 0

10 10

20 20

30 30

40 40

°C °CWET BULB TEMPERATURE - ABU DHABI, ARE

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st DecemberRELATIVE HUMIDITY - ABU DHABI, ARE

0% 0%

20% 20%

40% 40%

60% 60%

80% 80%

100% 100%

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st DecemberDIRECT SOLAR - ABU DHABI, ARE

0.00k 0.00k

0.20k 0.20k

0.40k 0.40k

0.60k 0.60k

0.80k 0.80k

1.00k 1.00k

W/m² W/m²

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st DecemberDIFFUSE SOLAR - ABU DHABI, ARE

0.00k 0.00k

0.20k 0.20k

0.40k 0.40k

0.60k 0.60k

0.80k 0.80k

1.00k 1.00k

W/m² W/m²

Jan14th 28th

Feb14th 28th

Mar14th 28th

Apr14th 28th

May14th 28th

Jun14th 28th

Jul14th 28th

Aug14th 28th

Sep14th 28th

Oct14th 28th

Nov14th 28th

Dec14th 28th

1st January to 31st DecemberCLOUD COVER - ABU DHABI, ARE

0% 0%

20% 20%

40% 40%

60% 60%

80% 80%

100% 100%

Dry-Bulb Temp. Wet-Bulb Temp. Relative Humidity

Diffuse Solar Radiation Direct Solar Radiation Cloud CoverN

15°

30°

45°

60°

75°

90°

105°

120°

135°

150°

165°180°

195°

210°

225°

240°

255°

270°

285°

300°

315°

330°

345°

10°

20°

30°

40°

50°

60°

70°

80°

8910111213141516171st Jan

1st Feb

1st Mar

1st Apr

1st May

1st Jun 1st Jul

1st Aug

1st Sep

1st Oct

1st Nov

1st Dec

Solar GeometryWind Analysis

Wind rises below show that the predominant wind direction in the summer as well as winter months is West, South-West & North, North-East respectively.

ANNUAL WIND PROFILE STUDY

March - OctoberNovember - February

Prevailing winds around the yearHumidity Temperature

PSYCHOMETRIC CHARTPSYCHOMETRIC CHART

SOLAR RADIATION ANALYSISSOLAR RADIATION ANALYSIS

SOLAR SHADING ANALYSIS

07:00 AM 09:00 AM

11:00 AM 01:00 PM

03:00 AM 05:00 PM

SOLAR SHADING ANALYSIS

June December

After analyzing the solar path diagrams & temperature data for Delhi City, Sun Shadeshave been designed such that it will allow the winter sun to come in and block thesummer sun completely

VISUAL COMFORT & GLARE CONTROL ANALYSIS

With Proposed ShadingAs Designed

Outdoor courtyardHuman sensitivity rendering

Outdoor courtyard False color rendering

Indoor space Human sensitivity rendering

Indoor space False color rendering

DAYLIGHT & ENERGY ANALYSIS WITH WINDOW SIZES

305

310

315

320

325

AS IS W 80%

W 70%

W 60%

W 50%

W 40%

W 30%

W 20%

Ann

ual

(MW

h)Light Electricity

consumption

740

745

750

AS IS

Ann

ual

(MW

h)

HVAC Electricity consumption

3,930

3,935

3,940

3,945

3,950

AS IS W 80%

W 70%

W 60%

W 50%

W 40%

W 30%

W 20%

Ann

ual

(MW

h)

Total Electricity consumption

Case A Case BCase C

Case C 30% of As-IsCase B 60% of As-IsCase A As-Is

%

2.00+

1.80

1.60

1.40

1.20

1.00

0.80

0.60

0.40

0.20

-0.00

DF %

DAY-LIGHTING STRATEGIES

Central Skylight

Multiple reflections by Heliostats

Daylight Penetration - Interior Light Shelves

Reflection of light by Heliostats

NATURAL VENTILATION ANALYSIS

Plantation of mix of tall and medium sized deciduous and evergreen trees to create a negative pressure for wind flow on the southern side.

Introducing creepers and climbers on a vertical bamboo trails structure above human breathing zone and installing misters which can be switched on during summer time to provide evaporative cooling in the space.

Summer wind

Blocking of Summer Winds

On South side by Trees

THERMAL COMFORT ANALYSIS

View From Inside – Without and with External Fins

view from south west

Typical March Day Typical May Day Typical Sep Day Typical Dec DayHours of the day 00:00 to 23:00

Hours of the day 00:00 to 23:00

Hours of the day 00:00 to 23:00

Hours of the day 00:00 to 23:00

Inside Temperature (F) BaselineInside Temperature (F) Window Shading

Inside Temperature (F) Natural VentilationOutside Dry Bulb Temperature (F)

ADAPTIVECOMFORTRANGE

view from South West

Passive strategies like window shading & natural ventilation enable 20% reduction in space temperatures, which results in less cooling energy consumption

HVAC 43%

Others13%

Equipments18%

Lighting26%

ENERGY CONSUMPTION PATTERN IN BUILDINGS

Optimized thermal insulations over

envelopeHigh performance

glazing

Efficient lightingsystem

Chilled beam air conditioning systems

Demand controlled ventilation system

Day-light and Occupancy sensors

Heat recovery systems

Photovoltaic

ENERGY CONSERVATION MEASURES

-

1,000

2,000

3,000

4,000

5,000

6,000

7,000

8,000

ASHR

AE

Base

line

As-D

esign

edCa

se

Wall

+ Ro

ofIm

prov

emen

t

Glaz

ingPe

rform

ance

Impr

oved

LPD

Dayli

ght

Harv

estin

g

Occu

panc

ySe

nsor

s

Chille

rCO

P

Exte

rior

Light

ing

CO2

Sens

ors

Annu

al En

ergy

Con

sum

ptio

n (1

000X

kWh)

Space CoolHeat Reject.Space HeatVent. FansPumps & Aux.Ext. UsageMisc. Equip.Area Lights

ENERGY CONSERVATION MEASURES

NON CONVENTIONAL ENERGY GENERATION TECHNIQUE

Urban Scale Small Wind Turbines Integrated on Building Roof

Solar PV Panels Proposed at the South facing Ground bump.

0

20

40

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov DecAnnu

al c

onsu

mpt

ion

(MW

h)

Total HVAC consumption with and without Geothermal Cooling

Without Geothermal Geothermal

EXTERIOR LIGHTING SIMULATION

3D view of Calculux 3D view of Dialux

0 0.1

0.2

0.5

1.0

1.5

2.0

2 m Compound Wall

15 ft buffer area beyond site boundary

Exterior Light Fixture

External Light Levels in Lux

CASE STUDY

India’s FIRST NET ZERO ENERGY OFFICEbuildingBayer Initiative towards ‘Climate Protection’LEED – India NC rating system PLATINUMGREENEST building in India scoring a total 64LEED points out of possible 69

Project detailsSite Area = 2.1 acreBuilt Up Area = 9600 sqftNumber of Floors = G+1Estimated No. of Occupants = 50Window to Wall Ratio (WWR) = 30%

ECO COMMERCIAL BUILDING

ENERGY EFFICIENCY MEASURES

MINIMUM TARGET FOR NET-ZERO

GAP

TO

BRID

GE

REACHING NET ZERO

X 1000 KWH

Parameter Typical Orientation Roof Insulation

Elec. Load (kWh) 1,32716 1,31,123 1,27,274

Cooling Load (TR) 77 74 65

Carbon Emissions (Tns) 114 112 109

Orientation 1.2 % Savings

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)

Roof Insulation 2.9 %

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

Savings

Cumulative Savings 4.1%

Parameter Last ECM Wall Insulation Window Assembly

Elec. Load (kWh) 1,27,274 1,23,160 1,20,373

Cooling Load (TR) 65 58 49

Carbon Emissions (Tns) 109 105 103

Wall Insulation 3.1 % Savings

Window Assembly 2.9 %Savings

Insulated WallNorth East, South West, South East Facade:U-value-0.016 Btu/hr.ft2 FNorth West Facade:U-value-0.0393 Btu/hr.ft2 F

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

Cumulative Savings 9.3%

Parameter Last ECM Int. Lighting Sensors

Elec. Load (kWh) 1,20,373 96,749 89,716

Cooling Load (TR) 49 36 24

Carbon Emissions (Tns) 103 83 77

Interior Lighting 17.8 % Savings

Daylight & Occupancy Sensors

5.3 %Savings0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

Cumulative Savings 32.4%

Parameter Last ECM External Lighting Efficient Misc. Eq.

Elec. Load (kWh) 89,716 89,583 82,814

Cooling Load (TR) 24 24 21

Carbon Emissions (Tns) 77 77 71

External Lighting 0.1 % Savings

Efficient Misc. Equip. 5.1 %Savings

External lighting

Use of simulation to optimize lighting levels

Use of energy efficient fixtures and lighting to reduce loads

Miscellaneous equipment

Use of energy efficient star rated smart desktops, printers and other office equipments .

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

Cumulative Savings 37.6%

Parameter Last ECM Chilled Beams Demand Cntrl Vent

Elec. Load (kWh) 82,814 71,932 63,305

Cooling Load (TR) 21 19 17

Carbon Emissions (Tns) 71 62 55

Chilled Beams 8.2 % Savings

Demand Cntrl Ventilation 6.5 %Savings

Indoor temperature :24 +

1 deg C :RH < 55%

30 TR Water cooled Scroll

Chillers machine ( 4 Nos.

7.5 TR Compressor) 0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)

Design ventilation rate of

30% additional outdoor

air over the benchmark set

by ASHRAE Standard 62.1-

2004 . 0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

Cumulative Savings 52.3%

Parameter Last ECM Heat Recovery Efficient Chillers

Elec. Load (kWh) 63,305 61,712 55,077Cooling Load (TR) 17 16 16Carbon Emissions (Tns) 55 53 47

Heat Recovery 1.2 % Savings

Efficient Chiller 5.0 %Savings

Cumulative Savings 58.5%

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13C

onsu

mpt

ion

(MW

h)

Parameter Last ECM Efficient pumps Efficient Chillers

Elec. Load (kWh) 55,077 54,546 55,077Cooling Load (TR) 16 16 16Carbon Emissions (Tns) 47 46 47

Efficient Pumps 0.4 % Savings

Cumulative Savings 60%

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13

Cons

umpt

ion

(MW

h)60% SAVINGS THROUGH

CONVENTIONAL & PASSIVE STRATEGIES

Orientation; 1.2%

Roof Insulation + SRI ; 2.9% External

Walls ; 3.1%Windows;

2.1%

Interior Lighting;

17.8%

Daylight & occupancy

Sensors; 5.3%

Exterior Lighting; 0.1%

Efficient misc. equipments;

5.1%

Chilled Beams;

8.2%

Demand Control

Ventilation;6.5%

Heat Recovery;

1.2%

Efficient Chillers, 8%

Efficient Pumps;

0.4%

Percentage Savings

Day lighting AnalysisApprox 90% of total regularly occupied spaces in the building have a minimum daylight factor of 2%.

57 KW Capacity Solar PVs. 88,900 kWh electricity is generated

100%Savings

0

200

400

600

800

1,000

1,200

1 2 3 4 5 6 7 8 9 10 11 12 13Co

nsum

ptio

n (M

Wh)

ONSITE ENERGY GENERATION

ANNUAL NET POSITIVE ENERGY PERFORMANCE

Solar Energy

Consumed 63,910

Solar Energy

Generated72,023

Air Conditionin

g48045

Lighting 3227

Equipment 12638

Excess Solar Energy Generated - 8113

One Complete Year Energy production and Consumption Data (from January 11,2011 to January 10, 2012)

Jai Vardhan YadavSustainability consultantAECOM India Pvt. ltd.

THANK YOU