Performance of a Solar-Assisted Air Source Heat Pump in Heating Condition

A experimental table of new solar-assisted air source heat pump (SA-ASHP) which used the non-homostasis two heat source complex heat exchanger as the core component has been constructed. Based on the national standards, three experimental conditions have been chosen, which the ambient temperature are respectively 7°C, 2°C, -7°C. The experimental results show that the heating performance of the SA-ASHP under the low-temperature condition is obviously better than the single air source heat pump (S-ASHP). Compared with the S-ASHP, the heating capacity of the SA-ASHP is increased by 24% and the COP is increased by 25% when the ambient temperature is -7°C. It can be seen that with the SA-ASHP technology, the problem about the poor low-temperature heating performance of the S-ASHP could be well solved.