Soltech has established an in-house production facility to manufacture tray collectors which meets the international standards.
The water is heated during day time and it is stored in the solar tank for a period of 48 hours without any loss of heat. The water from the cold-water tank enters the solar tank and fills it up. The cold water from the solar tank in turn flows in the bottom header pipe of the absorber, and into the copper tubes until all the absorber tubes and the header at the top of the absorber are full. When the sun rises to a certain level, its energy, which falls on the absorber fins and tubes, begins heating the water contained therein. The heated water being lighter than the cold water rises and via the top header pipe of the absorber, flows into the top of the solar tank . The more cold water from the solar flows into the absorber tubes, gets heated and rises to the top, and so on. This process is called ‘Thermosyphon Process’ and this Thermosyphon Process continues until the temperature of the water in the solar tank and the absorber equalizes. Now the solar tank is full of hot water.
(Note:- Average temperature is 60 degree centigrade at the end of 7-8 hours of bright sunshine.) Further when the hot water is drawn from the solar tank outlet to the utilities point, cold water enters into the solar tank and takes its place, thus lowering the overall temperature of the hot temperature between the water in the solar tank and the absorber tubes. The backup electrical heater (to be used during cloudy days) and the sacrificial anode rod in the solar tank to prevent galvanic corrosion (but not scale formation), if the hardness of the water quality is less than 140 ppm, thereby ensuring effective working for longer time.
Solar Water Heating Systems are very commonly used in Hotels, Hospitals, Industrial Canteens and in Boiler Pre Heating application. It is possible to design Solar Water Heating System to provide hot water upto 80*c There is no limitation in the capacity of the system. We also deal with ISI approved collector.
Soltech is involved in the following segments of Solar Water Heaters
- Pre-heated Systems
- Heat Pipe Systems
- ETC Manifold Systems
- Evacuated Tube Solar Collectors (ETC Model)
- Flat Plate Collector