Abstract
In the light of low efficiency of photovoltaic power generation and the problems of air source heat pumps application in the cold regions, this paper developed a composite evaporator and designed a new type of solar-air composite heat pump system, which was comprised of independently developed solar photovoltaic-thermal collector based on flat plate micro heat pipe and air source heat pump. The performances of heat pump system were studied experimentally, including water temperature of the heating tank, suction and discharge pressure, and performance of heat pump. When 73L water in the heating tank was heated by 1 HP heat pump from 15°C to 50°C at the ambient temperature of 5°C, the running time of dual heat source operation conditions was 5.14% shorter than that of separate air heat source operation conditions. Meanwhile, COP increased by 5.99%.
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