两种太阳能热泵采暖系统的性能模拟与对比

Numerical simulation and comparison on performance of two types of solar assisted heat pump systems

太阳能热泵供热系统中热泵和集热器的结合方式对其性能有较大影响。对热泵在前、集热器在后的热泵串联太阳能供热系统(HP+SC)与集热器在前、热泵在后的太阳能串联热泵供热系统(SC+HP)进行性能模拟和对比。以南京地区气候条件为例,设计出供热能力为10kW的太阳能热泵供热系统,建立其系统数学模型,深入分析两种结合方式下的热泵系统性能。结果表明:在典型晴天,随着太阳辐射强度的增大,热泵串联太阳能供热系统中热泵的性能优于太阳能串联热泵供热系统,热泵串联太阳能系统中的热泵COP最大可提高6.65%。

Two different type of systems with different relative position of heat pump and solar heat collector are presented in this paper. Through simulation, performance coefficient and operation characteristic of the heat pump with collector system located after heat pump （ HP ＋ SC） and the heat pump system with collector located before heat pump （SC ＋ HP） have been compared in this paper. A lOkW air-source heat pump is built and mathematical model is established. From the results of the simulation, the heat pump in the HP ＋ SC system have a better performance than that in the SC ＋ HP system with the increase of the radiation from the sun. The COP of the heat pump in the HP ＋ SC arrangement is 6.65% better than that in the SC ＋ HP arrangement at most.