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Already popular in the 1920's in areas like Florida and Southern California it is not a technology which came up just recently. Solar water heaters use the energy of the sun to heat the water. Usually water is used to transfer the heat to the heat storage vessel. Flat-plate solar-thermal collectors are generally kept on the roof, and possess an absorber plate to which fluid circulation tubes are fixed. The absorber which is coated with a dark selective surface helps in the conversion of the sun's radiation into heat. The water moves through the tubes carries the heat away and stored for use. Once the fluid is heated it passes the heat exchanger where it transfers the heat and goes back into the cycle back to the heating panels. The fluid flow may be assisted by a mechanical pump - which in itself could be powered by photovoltaic cells - or when setting conditions are available, allowing convection to circulate the fluid to the upper storage vessel mounted the circuit, also known as a thermosiphon. Initially clean and clod water is warmed and kept in a hot water cylinder. Subsequently, solar hot water panels would be fixed on the rooftop, each one with a dark colored absorber plate finished using water circulation tubes. Tubes will carry the hot water from the solar array to the end user or to the storage container. A heat exchanger releases heat and moves the cooled water once again into the solar hot water array in order to be heated again. The solar water heater holds the heat of the heated water throughout the day. This helps people to use the heat water all over the day. Any business that uses a large amount of hot water, like a laundromat, finds these arrays particularly useful. Having the potiential of being a completely automated system solar hot water heaters are made of many hot water panel units. Common misunderstandings about solar hot water panels. More inforamtion abou solar water heaters on http://www.yoursolarwaterheater.com.
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