夏热冬冷地区太阳能辅助地源热泵供热的应用研究

Geothermal Heat Pump System Assisted by Solar Energy for Heating in Summer-hot and Winter-cold Area

对于夏热冬冷地区,有些项目中会出现全年热负荷偏大的情况,这时便会造成土壤温度场的失衡,所以考虑使用太阳能辅助地源热泵供热。以南京为例,通过对南京地区太阳能资源以及具体案例的分析,从技术性、经济性方面对太阳能辅助地源热泵供热与单一的地源热泵供热进行比较,从而得出结论,当存在热负荷大于冷负荷的情况时,太阳能辅助地源热泵供热的综合性能优于单一地源热泵供热,并且能够维持土壤的热平衡,因此具有一定的可行性。

In summer-hot and winter-cold area, there are some projects, which annual thermal load is larger. It will break the heat boo- ance of soil temperature field, so the solar energy could be used. According to the analysis on the solar energy and cases in Nanjing, the so- lar-assisted ground source heat pump system is compared with the conventional ground source heat pump system for heating from the technical and economical aspects. It can be concluded that the perfonnanee of the ground source heat pump system assisted by the solar energy is better than the conventional ground source heat pump, when the thermal load is larger than the cooling load. Besides, the solar-assisted ground source heat pump system maintains the heat balance of soil temperature field, so it is feasible in some certain cases.