ASSIGNMENTON

CASE STUDIES OF ENERGY EFFICIENT

BUILDINGS

SUBMITTED BY –

SAHIL KAUNDAL11613B.ARCH. 4th Year

SUBMITTED TO –

AR. SANJAY BHANDARI

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ECBC Complaint Building, ITC Green Centre, Gurgaon

General Information:

Client: ITC Green centreCity: GurgaonClimate: CompositeOperational schedule – 10 hours, 5 working days in a weekArea of the building: 15,799m² (out of which 9294 m² -conditioned area, 6505 m² - non-conditioned area)

Building Design Features: •‘L’ shape design with main entrance towards north•Longer axes along NE and NW directions•By ‘L’ shape configuration, the width of the floor Plate is reduced for the same amount of floor plate area thereby allowing natural light to penetrate deep into the interior spaces.•It ensures that part of the façade is always shaded

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ITC Green Centre, Gurgaon

Walls -

Walls of air-conditioned zones in all blocks – 230mm AAC block with 70mm stone cladding and 12.5 mm plaster inside

Roof-

120mm RCC roof with 76mm ISO board on interior side

Windows -

•Double glazing window (6-12-6)•Glass on north orientation has a lighter light transmission•The glazing for the building has been designed to maximize the effect of natural light, largely eliminating the need for artificial light during day time.•The high performance window glass, while allowing light inside, does not allow heat and also keeps office cool from inside during the day decreasing the load on HVAC systems.

•Higher light Transmission Glass on North orientation for better day light integration

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ITC Green Centre, GurgaonDaylight Controls-

•Switch off daylight sensors with Philips make (model no. LRI 1430/00 ENEC)•Daylight controls switch off lights when daylight is sufficient, reducing the energy consumption of the building

Lighting system -

Luminaires used – mostly CFLs and T5 lamps in mirror optic fixtures, 36W fluorescent lamps and magnetic ballasts are used in storages, electrical and mechanical rooms•LPD – 7.2W/m2••The LPD (7.2W/m2) is less than the max allowed LPD of ECBC (10.8W/m2) which is very good.

•According to Energy Star, CFLs provide the same amount of light as an ordinary bulb using 75% less energy•T5 lights have higher efficiency and system miniaturization with daylight life about 18000 hours as compared to 8000 hours of standard fluorescent lamps•Good natural light available in office spaces

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CSR HOUSE, NSW(AUSTRALIA)CSR is Australasia’s leading building products supplier,

driving innovation in the building and construction industry

through continued investment in research and development

to further improve building systems and solutions. This

investment helps designers, builders and trades overcome

the day-to-day challenges they face in design offices and on sites all around Australia and New Zealand.

CSR House-

The primary aim of the CSR House

project was to design

and build an attractive 8 Star energy

efficient home asinexpensively as possible.

Thermal Comfort Star Ratings-

Heating and cooling energy makes up around

40% of the overall

energy use in a home – the biggest home energy requirement by far.

• Adequate levels of

insulation in walls,

ceilings and floors

• Draft proofing the

building envelope

• Effective ventilation to

control internal

temperatures and air quality

Good Energy Efficient Design-

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CSR HOUSE, NSW(AUSTRALIA)Whole of house energy

While heating and cooling energy use is the biggest

home energy cost, there are other areas where

significant savings can be made. In the CSR House,

our approach was to start with the building fabric, thenlook at appliances, followed by solar energy.

Water Heating-

Hills Solar gas boosted,

evacuated tube system

because of its higher level of

solar efficiency regardless of orientation.

Intelligent Lighting and Controls-

Philips LED and compact fluorescent lighting to maximise

energy savings and help to create a flexible and more

comfortable living environment. All lights are surface

mounted to minimise ceiling air leakage.

A lighting automation system is installed to control the

lighting and air conditioning for optimal energy management.

The system can be accessed remotely via computer or

smartphone.

Standby Power-

7

The little LED lights in your entertainment systems

and appliances also contribute to a home’s total

energy use. Simply turning the power off at the wallswitch can save on power bills.

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