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提出了一种复合热源太阳能热泵供热系统,通过阀门切换,可根据不同的天气状况改变运行模式,以空气和太阳辐射作为热源制取供暖用水。针对所设计的10kW供热系统,建立了系统的数学模型,对热泵串联集热器(SC+HP)及集热器串联热泵(H+SC)两种运行模式下的循环性能进行了计算机模拟分析,并计算了系统的全年运行状况。从模拟结果可以看出,在模拟进水温度区间内,HP+SC模式下热泵COP较高,最高比SC+HP模式高2.58%;而SC+HP模式集热器热性能较好,总热效率更高,最高比HP+SC模式高2.62%。
A compound heat source solar heat pump heating system is proposed. Through valve switching, the operation mode can be changed according to different weather conditions, and air and solar radiation are taken as heating sources to make heating water. A mathematical model of the system was established for the designed 10kW heating system. The computer simulation of the cycle performance of the heat pump series collector (SC + HP) and the collector series heat pump (H + SC) Analysis, and calculate the system’s annual operating conditions. From the simulation results, it can be seen that in the simulated inlet water temperature range, the heat pump COP in HP + SC mode is higher, up to 2.58% higher than SC + HP mode; while SC + HP mode collector has better thermal performance and total thermal efficiency Higher, up to 2.62% higher than the HP + SC mode.