energy efficient/ GREEN BUILDING

Usha Batra, Additional DG, WR-I, CPWD, Mumbai

There is no doubt that SOME OF THE ancient buildings were the most green buildings and in harmony with nature .

Energy efficient, Use of local materials, Indoor environment quality

Taj Mahal, built more than four hundred years ago can accommodate 10,000 people with no suffocation.

Fort / Jehaz mahal in Mandu has elaborate rainwater harvesting techniques

SHIFT FROM ANCIENT TO MODERN• Urbanisation and Industrialization changed traditional sustainable practices• The insatiable thirst for progress and comfort at- any-cost, altered the

equation with nature for ever.• Deforestation to accommodate increased population, damaging

environment.• Concrete, steel, glass and later plastics became the dominant construction

materials replacing stone and wood of yesteryears. • Untreated water, effluents from chemical industries and organic waste were

discharged into rivers and water bodies, destroying the sources of domestic water, giving rise to environmental concerns.

• Power supply, artificial lighting, water supply and disposal, thermal environmental controls within built environment were desired and obtained

CONCERN FOR CLIMATE CHANGE

• As per the Intergovernmental Panel on Climate Change (IPCC) 2014, the consumption of natural resources could double or even triple by 2050.

• Concern for climate change and diminishing natural resources are key challenges for the decades to come. Everywhere in the world, countries are implementing policies to reduce greenhouse gas emissions.

• Modern facilities provide comfort, performance and safety while posing challenges to sustainable development, resource efficiency and climate change.

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India accounts for around 4.1 percent of global greenhouse gas emissions

india has ratified paris climate deal on 2.10.16 -- 62nd country

NEED FOR GREEN BUILDINGS

• There is no denying the fact that human habitat is an essential part of a civil society but at the cost of nature.

• The natural resources are limited and depleting very fast.• Global CO2 emission is growing at 1.3% per year. • Energy in all forms generated for use by man is

continuously getting more expensive and becoming scarce in availability.

• Thus we must enforce measures of sustainability and live in harmony with nature.

• The fundamentals of the green / sustainable design approach are reducing the requirement, consumption and wastage of the resources, selecting ecologically sustainable materials, reusing and recycling them and utilizing renewable energy sources to generate energy on site.

NEED FOR GREEN BUILDINGS

By 2050, the built foot print of India will be four times the current mass.We need to acknowledge the basic reality that the building industry on one hand uses 40% of total energy, 42% of water and 50% of raw materials; and on the other hand it is responsible for 50% air pollution, 42% green house gases, 50% water pollution, 48% solid waste and 50% CFC (chlorofluorocarbons).Green buildings will contribute towards cutting down energy and water consumption to less than half of the present conventional buildings, and may completely eliminate the construction and operational waste through recycling.

DEFINITION OF GREEN BUILDING

• Standard definition of a green building is that it optimises energy efficiency, uses less water, conserves natural resources, generates less waste and provides healthier spaces for occupants, as compared to a conventional building.

GREEN BUILDING CONCEPT GOOD ARCHITECTURAL DESIGN ENERGY EFFICIENCY WATER EFFICIENCY CONSERVATION OF MATERIALS AND

RESOURCES BY USE OF PRODUCTS MADE FROM WASTE

GREEN BUILDING MATERIALS INDOOR ENVIRONMENTAL QUALITY USE OF RENEWABLE ENERGY / SOLAR PV

SALIENT FEATURES OF Green Building

• Minimal disturbance to existing landscape and site condition.

• Efficient use of water and water recycling.• Use of energy efficient and eco-friendly equipments.• Use of recycled and environmental friendly building

materials.• Use of non-toxic materials.• Effective control and building management systems.• Ideal indoor air quality for human safety and comfort.• Use of renewable energy.

ARCHITECTURAL DESIGN

DESIGN OF GREEN BUILDING• Appropriate orientation & shape of the building with respect to sun

and wind direction. • Appropriate WWR for light & ventilation i.e. design that increases

daylight to reduce the need for daytime lighting. • Shading devices & Landscaping to allow the desirable sun and cut-

off the non- desirable sun as well as divert the wind direction wherever required. It is an important element in altering the micro-climate, provides buffer for heat, sun, noise, traffic, and airflow .

• Use of balconies, verandahs, courtyards, wind towers, skylights, cross ventilation and night ventilation.

• Use of Green building materials and technology.• Shading of walls and roof.

SHAPE OF THE BUILDINGThe lesser the perimeter, the lesser is the heat gain from solar as well as conduction.

The depth of a building also determines the requirement for artificial lighting. The greater the depth, higher is the need for artificial lighting.The circular geometry has the lowest perimeter as well as S/V ratio thus is most energy efficient in composite climate.

ORIENTATIONIn hot zone (Hot & Dry, Hot & Humid) the building has to be oriented North- South.

In cold zone If the long axis of the building makes an angle of 30 with E-W direction, it receives sun heat for maximum duration.

APPROPRIATE WWR FOR LIGHT & MINIMISING HEAT INGRESS

Design that increase daylight and reduces the need for daytime artificial lighting.

Lowest energy consumption is in the case of WWR 10%. But electricity consumption increases due to artificial lighting

Minimum electricity consumption with sufficient daylight is in the case where WWR is 20-30%.

SHADING DEVICES

• North - no shading is required.• South - permanent shading required as sun faces most

part of the day. • East and West - preferable to design movable shading

devices.• Walls and roof can be shaded in many ways e.g. plants,

solar panels, louvers, paragolas etc. for energy-efficiency.

External shading devices need to be designed according to the orientation of facade.

PASSIVE FEATURES FOR ENERGY EFFICIENCY• Buildings in different climatic zones require different passive features to make

structures energy-efficient. • In hot and dry zone e.g. Jaisalmer, Jodhpur, it is imperative to control solar

radiation and movement of hot winds by providing shading, reducing exposed area, controlling and scheduling ventilation, and increasing thermal capacity. The presence of “water bodies” is desirable as they can help increase the humidity, thereby leading to lower air temperatures.

• In warm and humid zone such as Mumbai, Chennai and Kolkata, main design criteria are to reduce heat gain by providing shading, and promote heat loss by maximizing cross ventilation. Dissipation of humidity is also essential to reduce discomfort.

• In moderate zone e.g Pune and Bangalore it is desirable to reduce heat gain by providing shading, and to promote heat loss by ventilation.

• In cold climate zone, generally, the northern part main design criteria are to resist heat loss by insulation and controlling infiltration. Simultaneously, heat gain needs to be promoted by admitting and trapping solar radiation within the living space.

• In composite zone, such as Delhi, Kanpur and Allahabad. The design criteria are more or less the same as for hot and dry climate except that maximizing cross ventilation is desirable in the monsoon period

ENERGY EFFICIENCY

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Energy consumption in building sector

• Residential and commercial buildings account for almost 29% of total electricity consumption.

• Planning and Construction of Energy efficient buildings and carrying out major retrofits could save 2988 MW of generation capacity from 2010 to 2030.

• This can further be complemented by constructing net zero buildings and making best use of renewable resources like solar PV

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Consumption and possible savings in residential sector

Fans consume 34% energyLighting consumes 28% energy.Possible reductionby Energy efficient fans 20-40%by use of CFLs & LEDs 20-40%

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Consumption and possible savings in commercial sector

Possible reduction

HVAC - 20-60%Lighting - 20-50%, Electronic & others -

20-70%.

Consumption

ENERGY EFFICIENCY OF GREEN BUILDING As per report of (Confederation of Indian Industry) CII, GREEN BUILDINGS save energy to the extent of 40-50% and water to the extent of 20-30%.

Envelope alone can contribute to 50% of this, meaning thereby that Energy saving potential of Energy efficient envelope alone is to the extent of 20-25% and is the permanent source of saving not requiring any performance check thereby reducing the demand for air conditioning.

DESIGN OF ENERGY EFFICIENT ENVELOP FOR GREEN BUILDING

The primary components of building envelope which affect the performance of a building, are: a) Walls, b) Roof, c) Fenestration (openings with or without glazing)

Heat gain of Various elements Contribution of Various building components to heat

gains• Glazing conduction 55%• Roof conduction 16%• Wall conduction 3% The %age of walls and roof will vary depending upon height & area of

the building

• Internal gains i.e light, people & computers 26% Internal gains can be controlled to some extent by

efficient lighting equipment, whereas all other gains can be controlled by Efficient Envelope design.

Walls are a major part of the building envelope, which are exposed

to external environment conditions such as solar radiation, outside air temperature, wind and precipitation.

They have major impact on indoor thermal comfort in naturally ventilated buildings and on cooling loads in air conditioned buildings

Thermal performance of walls can be enhanced by providing Thermal Insulation , Increasing thickness of wall , providing Cavity Walls & light coloured surface finishes .

Wall Assembly U-Factor and R-value (of Insulation alone) required as per ECBC in different climate zones are given below.

Climate Zone Hospitals, Hotels, Call Centers (24-Hour) Other Building Types (Daytime)

Maximum U-factor of the overall assembly

(W/m2.K)

Minimum R-value of insulation alone

(m2 .K/W)

Maximum U-factor of the overall assembly

(W/m2.K)

Minimum R-value of insulation alone

(m2 .K/W)

Composite U-0.440 R-2.10 U-0.440 R-2.10

Hot and Dry U-0.440 R-2.10 U-0.440 R-2.10

Warm and Humid U-0.440 R-2.10 U-0.440 R-2.10

Moderate U-0.440 R-2.10 U-0.440 R-2.10

Cold U-0.369 R-2.20 U-0.352 R-2.35

WALLS

Thermal performance of roof can be enhanced by providing Roof

insulation -over-deck /under-deck. Over-deck insulation is considered advantageous over under-deck

insulation as it stops the heat from reaching the slab itself. Performance can be further enhanced by use of Highly reflective &

emissive materials, roof coatings, broken china mosaic terracing, cool colours & Green roof systems.

Roof Assembly U-Factor and Insulation R-value Requirements as per ECBC are given below.

Climate Zone 24-Hour use , Hotels, Call Centers etc. Daytime use buildings Other Building Types

Maximum U-factor of the overall assembly

(W/m2.K)

Minimum R-value of insulation alone

(m2 .K/W)

Maximum U-factor of the overall assembly

(W/m2.K)

Minimum R-value of insulation alone

(m2 .K/W)

Composite U-0.261 R-3.5 U-0.409 R-2.1

Hot and Dry U-0.261 R-3.5 U-0.409 R-2.1

Warm and Humid U-0.261 R-3.5 U-0.409 R-2.1

Moderate U-0.409 R-2.1 U-0.409 R-2.1

Cold U-0.261 R-3.5 U-0.409 R-2.1

ROOF

FENESTRATION• The most vulnerable part of the building envelop is windows and

glazed areas as they contribute to 55% of heat gains. Windows are required to bring inside natural daylight and wind. However, with light it also brings in glare & heat. Proper location, sizing and detailing of windows along with shading devices is therefore a very important aspect of energy efficiency.

• Vertical Fenestration U-factor (W/m2.K) and SHGC (solar heat gain co-efficient) Requirements have also been specified by ECBC in relation with WWR i.e. (window to wall ratio) which is very important for India, especially in hot climate .

WWR≤ 40% WWR≤60%Climate Maximum U-factor Maximum SHGC Maximum SHGCComposite 3.30 0.25 0.20Hot and Dry 3.30 0.25 0.20Warm and Humid 3.30 0.25 0.20Moderate 6.90 0.40 0.30Cold 3.30 0.51 0.51

CASE STUDY OF USAGE OF MORE GLASS

CAMPUS FOR CBI AT GHAZIABAD ; LIBRARY BUILDING Building with covd. Area of 1455 sq. m on each floor. Air conditioning load became 3 times due to use of excessive glass.

WATER EFFICIENCY

Water wastage

Will There be Enough Water for Everyone?

REDUCE, REUSE AND RECYCLE Water

• Reduce the demand by avoiding wastage, avoid leakage by repair and use of low flow fixtures

• Reuse rain water / rain water harvesting.

• Reuse by preservation and creation of Water bodies

• Recycle grey water for use of make up water tank for chiller plant, agriculture and flushing.

GREEN BUILDING MATERIALS

PARAMETERS TO DETERMINE GREEN BUILDING MATERIALS

EMBODIED ENERGY WASTE CONTENT LIFE CYCLE DURABILITY MAINTAINABILITY TOXICITY I/C DURING FIRE SAFETY DURING INSTALLATION/USE, FIRE,

EARTH QUAKE ETC. LOCAL AVAILABILITY ENERGY REQUIREMENTS DURING ITS USE RECYCLABILITY

WOOD SUBSTITUTES

PRODUCTS MANUFACTURED FROM WASTE

INDOOR ENVIRONMENT

QUALITY

Smart building skins

Pair of Abu Dhabi Towers. Double skin- with inner layer as thin glass & outer layer in fibre glass. The outer layer opens & closes in response to the temperature of the façade..

Facade that eats smog. The material contains Titanium dioxide, which when comes in contact with air eliminates pollutants. Used in Hospital in Mexico. Provides clean air for patients inside.

In Melbourne, facade of small sandblasted glass circles, each fixed to a central rod. Based on the humidity and temp. inside the building, pivot automatically moves to facilitate air flow.

RENEWABLE ENERGY

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SOLAR PV POTENTIAL• Limitless• Clean • Everywhere• Free

Not even one percent of India’s total solar energy potential has been harvested till date, Confederation of Indian Industry (CII) has revealed. National Institute of Solar Energy has estimated India's solar power potential as 749 GW.

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SOLAR ROOFTOP Solar energy is the most secure

of all sources since it is abundantly available.

Theoretically, a small fraction of the total incident solar energy, if captured effectively, can meet the entire country’s power requirements.

Presently, 360 MW of solar rooftop projects have been sanctioned by MNRE and 49.677 MW have been commissioned.

COMPLETE BLDG WITH SOLAR PANEL CLADDING IN MANCHESTER

Solar Roof Tiles

Built to resemble traditional roof tiles, solar roof tiles — or solar shingles — are thin, photovoltaic (PV) sheets that can replace or lay on top of existing shingles. Just like solar panels, solar roof shingles capture energy from sunlight and can be installed in any climate or environment.

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RENEWABLE ENERGY INITIATIVEs BY CPWD

• All buildings have to be minimum 3 star GRIHA rated with solar rooftop panels and energy efficient fittings.

• Construction of Net zero energy buildings.• Installations of solar roof top PV in all

existing major buildings.

ENERGY SAVINGS, COST AND PAY BACK PERIOD

Building Built-in Area (m2)

Energy consumption (kWh)

Rating achieved

EPI(kWh/ m2)

conventional LEED

Designed % reduction

CII-Godrej GBC, Hyderabad

1,858 350,000130,000(63%)

Platinum(56 points)

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ITC Green Centre, Gurgaon

15,794 3,500,0002,00,000

(45%)Platinum

(52 points)127

Wipro,Gurgaon

16,258 4,800,0003,100,000

(40%)Platinum

(57 points)191

ENERGY SAVING IN GREEN BUILDINGS

s. no.

building Built up area,sqft

rating % increase in cost

Pay back period (yrs)

1 CII_Godrej, Hyderabad 2004

20000 Platinum(56 pts)

20 7

2 I TC green, Gurgaon2004

170000 Platinum(52 pts)

15 6

3 Wipro, Gurgaon2005

175000 Platinum(57 pts)

8 5

4 Grundfos Pumps, Chennai

40000 Gold (42pts)

6 3

INCREASE IN COST & Pay back period

GREEN RATING SYSTEMS

GREEN RATING SYSTEMS• Tools to bring momentum in achieving energy efficiency.

Fifteen have been identified worldwide- CASBEE, Green Star and LEED are quite common. Four criteria's i.e. Energy efficiency, indoor air quality, water efficiency & Use of recyclable, renewable, materials, are common to all.

• The country has currently two rating systems namely, LEED (Leadership in Energy and Environmental Design) and GRIHA (Green Rating for Integrated Habitat Assessment).

• GRIHA does not accept projects in which WWR is more than 60% as it is not suitable for Indian climate, (though even 60% appears to be on higher side ) whereas LEED rating system does not follow this criterion.

TYPES OF GRIHA1. SVA GRIHA  (Small Versatile Affordable GRIHA) For less

than 2500 sq m built-up area.2. GRIHA For more than 2,500 sq m.3. GRIHA LARGE DEVELOPMENTS All projects with total site area greater than or equal to 50 hectares

a large (mixed–use) townships:b educational and institutional campusesc medical colleges and hospital complexes (eg: AIIMS)d special economic zonese hotels/ resorts

4. GRIHA-PRAKRITI For existing school buildings in India.

SVA GRIHA• SVA GRIHA  (Small Versatile Affordable GRIHA) is

applicable only for projects which are less than 2500 sq m built-up area. Any building, except for a factory building, is accepted under the SVAGRIHA rating system.

Process• Registration• Submission of drawings and other documents .• Assessment/review as per SVAGRIHA• Feedback to project team• Site visit and due diligence check- post construction• Evaluation by a GRIHA Evaluator and Award of rating• 25-30 *, 31-35 **, 36-40 ***, 41-45 ****, 46-50 *****

GRIHAGRIHA rating system consists of 34 criteria .

Eight of these are mandatory, four are partly mandatory, while the rest are optional. Each criterion has a number of points assigned to it.

All buildings more than 2,500 sq m, (except for industrial complexes), which are in the design stage, are eligible for certification under GRIHA.

Buildings include: offices, retail spaces, institutional buildings, hotels, hospital buildings, healthcare facilities, residences, and multi-family high-rise buildings.

PROCESS includes registration, documentation and evaluation

51-60 *, 61-70 **, 71-80 ***, 81-90 ****, 91-100 *****

GRIHA LARGE Developments

All projects with total site area greater than or equal to 50 hectares.

1. Large (mixed–use) townships:• Housing complex by builders• Housing complexes by urban development organizations• Housing board and Public Sector Undertaking Townships• Plotted developments with part construction by the developer

2. Educational and institutional campuses3. Medical colleges and Hospital complexes (eg: AIIMS)4. Special economic zones5. Hotels/ resorts

These are evaluated in six different sections as listed below:• Site Planning• Energy• Water and waste water• Solid waste management• Transport• Social

• Each section comprises of two parts: Quantitative and Qualitative except Social parameter to be evaluated as only qualitative.

• Finally the net impact on quantitative and qualitative parameters (In and Iq respectively) will be totalled and compared against the base case impact of 100 per cent.

• The following formula will be used for the same:.• It = In (design case) + Iq (design case) x 100

In (base case) + Iq (base case)• 75-66 *, 65-56 **, 55-46 ***, 45-36 ****, 35-25 *****

GRIHA LARGE Developments cont….

GRIHA-Prakriti• It will be applicable only for existing school buildings.• The rating system has 16 criteria.• The criteria are divided into 6 broad categories namely: energy,

comfort, water, trees, solid waste management, and social.• It will be mandatory to attempt certain points under each sub-

group.• The total points that a project can achieve are 50• The rating will be done on a 1-5 star scale. PROCESS CONSISTS OF 1. Registration 2. Collecting data and filling up the forms  3. On-site audit  4. Final review – 5. Award of rating • 25-29 *, 30-34 **, 35-39 ***, 40-44 ****, 45-50 *****

INDIRA PARYAVRANBHAWANNET ZERO BUILDING

BY CPWD

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INDIRA PARYAVRANBHAWANNET ZERO BUILDING

05/02/2023

SIXTH FLOOR PLAN

NORTH BLOCK(G+7)

SOUTH BLOCK(G+6)

STATE MINSTER AREA=165.00 SQ.M

E

CONF.ROOMCAP. 40P

OFFICE(CARPET AREA=224.00 SQ.M)

OFFICE VISITOR LOUNGE IFS(I,II)132

REFUGEAREA

REFUGEAREA

C DRECORD ROOM

AREA=230.00 SQ.M

EAP74

FP&FIC86

EI78

WL138

AHU

PANTRY

LIFT &STAIRCASE

LOBBY

TOILETS + AHU+ PANTRY

AREA=12.00 SQ.M

OFFICEAREA=400.00 SQ.M

TOILETS

LIFT &STAIRCASE

LOBBY

OFFICE(PART OF 'C')AREA=110.00 SQ.M

AFE70

PE54

OZONE106

AREA=235.00 SQ.M

TOILETS + AHU+ PANTRY LIFT &STAIRCASE

LOBBY

BE-GOV

40AGMUT

18

AREA=210.00 SQ.M

TOILETS + AHU+ PANTRYLIFT &STAIRCASE

LOBBY

LEGENDOFFICE SPACE

TOILETS, AHU,PANTRY

LIFT LOBBY, STAIRCASE & CIRCULATION

PUBLIC SPACES(AUDI. ,CAFETERI A,YOGA,LIBRARY,GYM,RECREA.)

OFFICE SPACE (MINISTER'S, SECY.,DGF,ADGF,SPL/ADDL SECY.)

UTI LITY(STORES,RECORDROOM,BANK)

SIXTH FLOOR PLAN

NOT USEABLE(VOI DS,TERRACES,REFUGE AREA,ELECT. PANELS)

TERRACE GARDEN

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CROSS VENTILATION AT THE MICRO LEVEL THROUGH OPENINGS

R O A D

Building configurations for natural ventilation

PROJECTIONS INTO THE CENTRAL SPACE FOR SHADING + Shading by Passages

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Natural ventilation due to stack effect

AIR SHAFTS AND Connection with Nature

-Respecting the Eco-logic of the site. Building Punctures to Aid Cross Ventilation

UNIQUE FEATURES• FIRST EVER BUILDING IN GOVERNMENT SECTOR;-• TARGETED ON BOTH - 5 STAR GRIHA AND LEED PLATINUM

RATED GREEN BUILDING.

• BUILDING OF THIS MAGNITUDE (30,914 M² PLINTH AREA) TARGETED AS “NET - ZERO” ENERGY DEMAND BUILDING .

• RENEWABLE ENERGY GENERATION OF THIS MAGNITUDE (900 KWP OF SOLAR PV CELL SYSTEM) DONE WHOLLY ON-SITE (ROOFTOP AND CANTILEVERS AT TERRACE AND 4TH FLOOR LEVEL) WITH HIGHEST EFFICIENCY SOLAR PV PANELS.

• HIGHEST ENERGY SAVINGS BY A BUILDING OF ITS SIZE (55%) AGAINST THE BASELINE BENCH MARK E.P.I. (ENERGY PERFORMANCE INDEX) AS PER GRIHA CRITERION 14, OF 110 KWH/M²/YEAR, TO A TARGETED E.P.I. OF 50 KWH/M²/YEAR.

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UNIQUE FEATURES CONTD…..

• Chilled Beam system of HVAC.• Geo Thermal Heat Exchange system.• Regenerative Lifts. • Fully Automated Car Parking in

basements with Zero surface parking .• Bio Diversity Park.

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UNIQUE FEATURES CONTD…..

• A Net Zero Energy Building ; Energy demand and generation of building is 14 lakh KWH

• Energy Efficiency– Light Power Density achieved is 5 watt/sqm as

against 11.8 watt/sqm of ECBC 2007 thus saving in energy > 50% over conventional building

– AC load designed as 450Sft/Tr as against 150sft/Tr in conventional building.

– Electrical load designed as 4.3 W/Sft as against 10W/sft in conventional building

• Water efficiency– Low discharge fixture reducing water demand by

approximately 70% over conventional fixtures. – 100% Waste water is recycled after treatment for use

in irrigation and HVAC plant.

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Salient Features Natural ventilation Solar power generation Solar passive envelope design including walls , roof

and fenestration. Efficient electrical equipment as per ECBC 2007 Waste water recycling for Cooling Tower Rain water harvesting Geo thermal technology for heat rejection of AC system Design temperature: 26º C (S) / 20º C (W)

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Energy Conservation Measures• High Efficiency Solar Panels for Net Zero ( 20%)

• Energy efficient T-5 and LED Fixtures.

• Water cooled chillers, double skin air handling units with variable for heat rfrequency drives (VFD)

• Geo thermal heat exchange ejection from Air-conditioning system.

• Innovative Chilled Beam system for cooling.

• Overall Design Load optimization.

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Water Conservation Measures• Low discharge water fixtures• Low water demand native plants in

landscaping • Drip irrigation for green areas• Recycling of waste water for reuse in

– Flushing, – make up water tank for chiller plant– irrigation

• Rain water harvesting

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• Fly Ash Brick • Aerated Autoclaved Cement (AAC) Block • Portland Puzzolona Cement (PPC)• Terrazzo tile flooring with salvaged stone• Grass Paver Blocks Pavements• Local Stone with Marble Strips• Calcium Silicate Tiles • Bamboo Jute Composite for Frames &

Doors• Low (VOC)Volatile Organic Compound

Paints• Natural stone for flooring and cladding

Use of Eco friendly Materials

SOLAR POWER GENERATION DETAILS

Conclusions• Glass building trend needs to be reviewed in the light of Indian

climate and extra cost born to reduce the heating & glare effect of glass facades besides actual increased cost of construction.

• Use of solar PV on vertical surfaces to be explored to reduce the heat island effect due to glass facades.

• Net zero buildings to be given priority to reduce emission of green house gasses and pressure on non-renewable sources of energy. The annual reduction of 1% per annum to be considered carefully while designing.

• Use of green materials to be mandated to conserve natural resources and saving the environment.

• Water conservation, Energy conservation and Rain water harvesting to be mandatory to reduce the demand of water and energy.

LANDSCAPE DEVELOPMENT

• 55% Area will be developed as Landscape area.

• 79 existing trees on the project site

• Retained 45 nos. trees and 11 trees transplanted

• Grass Pavers for Pedestrian circulation to increase the soft area

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THANK YOU

SAVE FOREST, SAVE ENVIRONMENT