Experimental Investigations on a Conventional Air- conditioner Working as Air-water Heat Pump

For conventional air-conditioner, heat absorbed from air conditioning room is dispersed into the atmosphere through air-cooled condenser. In order to recover the waste heat, water-cooled condenser can be employed in conventional air-conditioner which would operate as an air-water heat pump system. This scheme has been applied in a suburban residential building in Tianjin. A series of experimental investigations were conducted to test operational performance of the heat pump equipment. The results are shown that coefficient of performance (COP) got 10% improvement and the average temperature of tank water affects COP of the equipment working as air-water heat pump significantly.