太阳能辅助供暖的地源热泵经济性分析

The economic analysis of ground-coupled heat pump by usingthe solar energy as an assisted source

在冬季土壤温度较低,而且以热负荷为主的北方地区,若完全采用地源热泵来供暖,则地热换热器和机组的初投资均比较高,连续运行的效率也较低,因此,可利用太阳能集热器作为辅助能源。白天完全依靠地源热泵供暖,夜间利用太阳能集热器蓄存的热量,使地热换热器与太阳能集热器串联运行。通过分析比较,该方案比完全用地源热泵供暖更经济。

In the northern, the temperature of soil is very low and the heating load is dominant. If the peak load of heating was supplied by ground exchanger, the ground-coupled heat pump heating efficiency is low. Therefore the solar energy can be utilized as assisted source. In day, the heat is supplied by ground exchanger, and by ground exchanger and solar collector in night. The results show that the program is more economical .