作　　者： ; ; ;

机构地区： 天津大学机械工程学院

出　　处： 《太阳能学报》 2012年第1期37-42,共6页

摘　　要： 通过对太阳能辅助地源热泵系统热泵两循环侧进出口流体温度、流量以及钻孔内各深度土壤温度进行实时监测,评价系统供热性能(COPs)及土壤温度变化规律。2009年冬季系统实际供热运行结果显示,COPs在3.0～4.9,太阳能的辅助作用直接体现在土壤温度的变化上,使用太阳能辅助9d后,各深度土壤温度比不使用时平均高1.15℃,COPs提高0.20～0.25;经实测,太阳能对末端供热的能量贡献占总量的6.83%,土壤占56.30%,电能占36.87%。从两循环侧流体不同流速组成与系统性能的关系中,可知存在高效流量组合使给定系统在其他条件不变时,COPs达到最大,本系统的最优流量组合为(1.83,2.54)m3/h。 A solar assisted ground-source heat pump system was presented. We monitored various operating param- eters, including the flow rate of the two circulations, the ambient temperature, the soil temperature, the inlet and outlet temperature of the borehole heat exchanger. The result obtained during the winter in 2009 showed that the heating coefficient of performance of this system （ COPs ） was found to be in a range 3.0 - 4.9, and the soil tem- perature droped 1.15℃ little equally with the solar assisted after nine days operation which led to about 0.20 0.25 up of the COPs. The solar energy for the contribution rate of heating load was about 6.83%, soil was 56.3%, and electric energy was 36.87%. Furthermore, there was a flow rate combination which ensures stable operation of the system and the COPs up to maximum when other conditions were unchanged. The flow rate combi- nation of our system was （ 1.83, 2.54） m3/h.

关 键 词： 供热性能 地源热泵 太阳能 土壤温度

领　　域： [建筑科学]