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A solar-assisted heat pump (SAHP) is a system that combines a heat pump and thermal solar panels and/or PV solar panels in a single integrated system. Heat pumps require a low temperature heat source, which can be provided by solar energy. Typically, these two technologies are used separately to produce warm air or hot water. In this system the solar thermal panel acts as the low temperature heat source, and the heat produced feeds the heat pump's evaporator. The goal of this system is to get high coefficient of performance (COP) and then produce energy in a more efficient and less expensive way. Air source heat pumps, which are preheated by solar air collectors, have an additional benefit of lower maintenance as the outside fan unit can be protected from the harsh winter environment.
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