直膨式太阳能热泵系统的模拟分析

Simulation Analysis on a Direct-Expansion Solar-assisted Heat Pump System

利用平衡均相理论建立了太阳能集热器的数学模型。根据测定的环境参数对该系统进行了模拟计算,分析了集热器中制冷剂的压降、集热器的类型以及接触热阻等因素对系统性能的影响。在此基础上,给出了改善系统性能COP的措施。

The mathematic model for solar collector was established using equilibrium homogeneous. The simulation calculation of the system was made on the condition of the tested environment parameters, analyzing the influence of the parameters such as the refrigerant pressure drop across solar collector, type of solar collector and contact resistance on the thermal performance of the system. Based on the results, some measures have been given to improve the COP of the system.