岩土热响应实验在地埋管换热系统设计中的应用

Application of Geo-thermal Response Test in the Design of Buried Vertical Pipe Heat Exchangers

结合湖南某地源热泵热响应试验,对岩土热响应试验中的关键问题进行了分析。针对某一实际项目建立了120m深双U型垂直埋管试验井测试装置进行热响应试验,并采集了岩土热物性参数,得到了土壤原始地温以及地埋管换热器的供回水温度响应曲线,进而根据地埋管换热性能的动态计算方法确定了每延米井深的换热量等参数。

Combining with a geo-thermal response test project in HuNan, the key issues of geo-thermal response test are analyzed. Vertical double U-tube test well sare taken, and the comprehensive thermal parameters of ground-source are received through field test of two test wells with depth of 120m. Furthermore, the original ground temperature and the inlet and outlet water temperature response curve of the underground heat exchanger are also obtained, which are used to parameters such as heat change of each yani well are determined according to the dynamic calculation method.