This paper attempts a preliminary assessment of indoor conditions and thermal comfort in a room coupled with direct evaporative cooler in four different climatic zones of India. A room in a building has been simulated to obtain diurnal hourly values of room air dry bulb temperature and relative humidity for the summer months of March, April, May and June in selected locations in (i) hot and dry, (ii) composite, (iii) warm and humid, and (iv) moderate climatic zones.

The paper brings out detailed account of an intervention through a gasifier system as an alternative to reduce the fuel cost in the silk dyeing industry. The field performance of a gasifier based silk dyeing oven developed by The Energy and Resources Institute (TERI) is described in detail.