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Potential for Maintaining Comfort and Achieving Energy Savings in India using Low Energy Cooling Technologies

Potential for Maintaining Comfort and Achieving Energy Savings in India using Low Energy Cooling Technologies

In the absence of space conditioning standard contextual to Indian context, the space conditioning systems for buildings are designed based on ISO and ASHRAE thermal comfort standards.  Field observations have indicated that these systems often operate at 22.5 ± 1°C (72.5°F ± 1.8°F) all year round without adjusting to comfort needs of the occupants.  Such operational practices are largely attributed to an increased expectation for stable comfort conditions. 

CEPT has developed adaptive thermal comfort model contextual to climate conditions in India. This study addressed comfort expectations of office workers in naturally ventilated building, mixed mode buildings (buildings which rely on mechanical cooling systems to maintain thermal comfort only during adverse outdoor conditions) and air conditioned buildings. Study found strong evidence that Indians can be comfortable at higher temperature the year with wider range of temperature adaptability of Indian subjects.

Deployment of adaptive thermal comfort standard is expected to save enormous amount of savings. Adaptive thermal comfort standard also will allow many other non-conventional, Low energy cooling technology to serve space cooling requirements. Identification of such technology will also make path of wider range of product availability in Market.

The study will provide following outcomes:

  • Identification of low energy cooling system capable of providing comfort as per adaptive band.
  • Potential energy savings due to deployment of low energy cooling system meeting adaptive thermal comfort model at various climate conditions
  • Recommendation to include such technologies in upcoming version of national building code and energy conservation building code.
  • Identify barriers and challenges on widespread deployment of low energy cooling systems.
Supported by:

Ministry of New and Renewable Energy Govt. of India, Gujarat Energy Development Agency, U.S. Agency for International Development iNDEXTb (Industrial Extension Bureau) Govt. of Gujarat, Shakti Sustainable Energy Foundation, New Delhi