THE EXPERIMENTAL STUDY ON HEAT PUMP AIR CONDITIONER WITH CONDENSING HEAT RECOVERY

摘要

The use of domestic air conditioner and domestic water heater gradually increased year by year in China.In this paper,a prototype was presented which integrated heat pump air conditioner with heat pump water heater.This system can simultaneously cool down the room and supply domestic hot water in the summer.The unit performance in cooling mode,the heating water mode and cooling/heating water mode were tested respectively and the compressor discharge pressure,the compressor suction pressure,the water temperature、the compressor power,the cooling capacity and the system coefficient of performance in three different modes were analyzed and compared.When the system operated in combined cooling with heating water mode,the system comprehensive COP was higher than that in the separate cooling and separate heating water modes which peak value can reach 7.0.