Solar Hot Water Systems
Solar water heating is water heated by the use of solar energy. Solar heating systems are generally composed of solar thermal collectors, a water storage tank or another point of usage, interconnecting pipes and a fluid system to move the heat from the collector to the tank. This thermodynamic approach is distinct from semiconductor photovoltaic (PV) cells that generate electricity from light; solar water heating deals with the direct heating of liquids by the sun with no electricity being generated. A solar water heating system may use electricity for pumping the fluid, and have a reservoir or tank for heat storage and subsequent use. The water can be heated for a wide variety of uses, including home, business and industrial uses. Heating swimming pools, underfloor heating or energy input for space heating or cooling are common examples of solar water heating.
Benefits of a Solar Hot Water System
As a form of energy supply,solar hot water systems offer a broad range of advantages:
- The fuel source is essentially infinite
- Solar hot water systems generate hot water without greenhouse gas emissions
- The vacuum tubes used in solar hot water systems are a reliable technology as they have no moving parts
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