Solar Water Heaters
A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating, but may refer to large power generating installations such as solar parabolic troughs and solar towers or non water heating devices such as solar air heaters.
Solar thermal collectors are either non-concentrating or concentrating. In non-concentrating collectors,
the aperture area (i.e., the area that receives the solar radiation) is roughly the same
as the absorber area (i.e., the area absorbing the radiation). This type has no extra parts except the collector itself.
Concentrating collectors have a much bigger aperture than absorber area (additional mirrors focus sunlight on the absorber) and only harvest the direct component of sunlight.
Non-concentrating collectors are typically used in residential and commercial buildings for space heating, while concentrating collectors in concentrated solar power plants generate electricity by heating a heat-transfer fluid to drive a turbine connected to an electrical generator.
Unglazed liquid collectors are commonly used to heat water for swimming pools but can also be applied to large scale water pre-heating.
When loads are large relative to available collector area the bulk of the water heating can be done at low temperature, lower than swimming pool temperatures where unglazed collectors are well established in the marketplace as the right choice. Because these collectors need not withstand high temperatures, they can use less expensive materials such as plastic or rubber.
- Best in class quality for all type of usage
- Quick installation & best service
- One-time investment (20 years life)
- 5 Years on-site warranty
The main use of this technology is in residential buildings where the demand for hot water has a large impact on energy bills. This generally means a situation with a large family, or a situation in which the hot water demand is excessive due to frequent laundry washing. Commercial applications include laundromats, car washes, military laundry facilities and eating establishments.