Experimental study on the performance of multifunction heat pump for domestic hot water

A multi-functional air-source heat pump with cooling, heating and supplying of domestic hot water was proposed. The principle and process of multi-functional air-source heat pump were analyzed, and the experimental prototype was developed, and the performance variation of the multi-functional air-source heat pump for domestic hot water under different conditions was studied by experiment. The experimental results showed that the COP of multi-function heat pump for domestic hot water was increasing with the environmental temperature enhance, which was up to 4.1 during the summer condition.