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Buildings are responsible for

40% of global energy consumption

42% of global greenhouse gas emissions

50% of material resources taken from nature

Over 50% of national waste production

50 % Chlorofluorocarbons emitted to the

environment

3800 mega tones of carbon dioxide emitted

into the atmosphere.

Disturbances to natural ecosystems

Irreparable damage to top soil and vegetation

Emission of Greenhouse gases and particulate matter and pollution of air, land and water

This situation is alarming and leads to

The industry is thus becomingnonsustainable.

The neglect of natural elements in the planningand design causessick building syndrome.

Consumes more energy and Depletion ofNatural resources

are part of sustainable activities which have less or minimal negative impact onthe environment.

in general lasts longer, cost less to operate, and wont harm peoples health.

Consumes less energy and minimal consumption of virgin materials

It is, therefore necessary to increasethe efficiency and use discretion in allprocesses related to the buildingindustry and go forEnergy EfficientGreen Buildings.

Green Buildings

Sick Buildings

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Day light & Night

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Optimize building design to reduce the conventionalenergy demand Plan appropriately to reflect climateresponsiveness, adopt an adequate comfort range, less air-conditioned areas, day lighting, avoid over-design of thelighting and air-conditioning systems.

Steps followed for this Study are 1. Climatic Analysis2. Solar Exposure Analysis3. Shading Design4. Daylight Integration

5. Window Optimization6. Artificial Light Analysis

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Solar Exposure Analysis With this analysis the annual solar insulation in the existing orientation and in the ideal

orientation of the proposed building can be measured and also the most critical facades ofthe building from solar exposure point of view are detected for protection.

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Self Shading of Building Blocks

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Thermal Comfort inside BuildingsParameters affecting thermal comfort Air Temperature Relative humidity Air movement Mean Radiant Temperature Metabolism Clothing Occupant Density

Thermal comfort study is done andrecommendations are given on designinterventions to enhance thermalperformance efficiency.

Indoor design conditions for Air conditioned buildings

Building simulation and modelling using software tools would be made tocalculate reduced building loads by use of efficient construction material.

Several options of efficient walling, roofing, and glazingsystems would be studiedwith help of simulation to determine its effectiveness to reduce energyconsumption vis--vis increased cost.

These parametric analyses would enable client to arrive at optimum design forwall, roof and window specifications.

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140 kWh/m 2-yr/

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Room conditions

26-280C / 70% & 300 lux

Room conditions

23-260C / 60% & 300 lux

Building energy index

60 kWh/m 2-yr

Building energy index

140 kWh/m 2-yr

Challenges in building design

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Grid connected Roof Top Photo voltaic(PV) Systems-onsite green power

Stand alone PV Operated Street Light Systems

Solar thermal Solar Hot Water Systems Wind mill power generation-Off Site Power

Renewable Energy Integration in L&T Campus, Manapakkam, Chennai

PV Installed Capacity - ~ 407 KW

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IGBC

IGBC Green Homes

IGBC Green Township

IGBC Green SEZ

IGBC Green Factory Buildings

LEED India for New Construction

LEED India For Core and Shell

USGBC

Homes

Neighborhood Development

Retail

New Construction

Core and Shell

Commercial Interiors

Existing Building O&M

Schools

Health Care

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