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以苏州地区某地块项目地源热泵工程为依据,采用恒热流方法对现场单U和双U型地埋管分别进行了岩土热响应试验.通过该试验获得了该项目现场地质情况和岩土体热物性参数,同时计算出各种工况下地埋管换热性能并进行分析,得出该地区的地下土壤平均导热系数为2.02 W/(m·K),双U型地埋管换热器比单U型地埋管换热器的换热性能约高15%.
Based on the ground-source heat pump project of a block in Suzhou area, the thermal-geothermal response test was carried out on the site single U and double U-type buried pipe by constant heat flow method, and the geological conditions of the project and the rock Soil thermal physical parameters, and calculate the heat transfer performance of buried pipe under various working conditions. The results show that the average thermal conductivity of underground soil in this region is 2.02 W / (m · K) Heat exchanger than the single U-tube heat exchanger heat exchanger performance of about 15%.