Solar Water Heating

Solar Water Heaters constitutes collectors, storage tanks and backup electrical heating(optional) and with water Circulation Pumps if required. There are primarily two types of collectors in general usage: Flat plate and Evacuated-tube depending on the quality of water.

A flat plate collector,the most common type, is an insulated, weather-proof box containing a dark absorbed plate under one or more transparent or translucent covers. Evacuated-tube collectors are made of rows of parallel, transparent glass tubes. Each tube consists of a glass outer tube and an inner tube or absorbed covered with a selective coating that absorbs solar thermal energy but inhibits radiative heat loss. The air is withdrawn (“evacuated”) from the space between the tubes to form a vacuum, which eliminates conductive and convective heat loss.

Solar water heating system capacities range from 200 liters per day to 1 lac liters per day and can be used for following applications:

Domestic: Homes, Bungalows and Apartments.

Commercial: Hotels, Hospitals and Hostels.

Industrial: Preheating boiler feed water and Process Industries.