土壤源热泵夏季运行特性的实验研究

The experimental research on running characteristic of GSHPs in summer condition

开展夏季制冷工况土壤源热泵运行特性的实验研究,采用改变埋管换热器流量及运行时间的方法,对地下埋管换热器的特性及其周围温度场变化规律、该系统循环性能的实验结果进行了总结和分析。获取了不同运行条件下该系统排热量和吸热量的实验结果,总结出了本地区土壤源热泵系统的一般运行规律。

Experiments on operational characteristics of GSHPs were conducted under summer condition. The changing patterns of temperature field around the underground vertical U-tube pipe were measured by using the methods that change volume of underground heat exchanger, or change running time and start - up time. The heat exchanging characteristics between U-tube pipe and soil, and the cycle performance of GSHPs were analyzed. Based on these, the normal operational patterns of GSHPs in summer can be summarized. The heat transfer rate of the underground heat exchanger can be obtained.