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以华东地区某地下工程中的土壤源热泵系统综合实验平台为研究对象,通过实验研究的方法,对地埋管地源热泵在夏季对地下工程中的典型大余热房间供冷运行特性进行测试。实验结果表明:地埋管地源热泵在华东地区地下工程运行的启动时间约为12 h,其单位埋管放热量为41 W/m。系统运行初期,地下土壤温度上升速度最快,上升幅度随土壤深度的增加而减小。系统运行时间越长,土壤恢复能力越差。测点土壤不同深度温度恢复能力不同,主要受当地地层结构影响。研究成果为土壤源热泵系统在地下工程的应用及运行管理提供参考。
Taking the ground source heat pump system integrated experiment platform in an underground project in East China as the research object, this paper tests the cooling operation characteristics of the ground source heat pump in a typical large waste heat room in underground engineering in summer through the experimental study. The experimental results show that the underground pipe-jacking ground-source heat pump has a start-up time of about 12 hours and a heat release of 41 W / m per buried pipe in the East China. In the early stage of system operation, the temperature of underground soil increased at the fastest speed, and the increase rate decreased with the increase of soil depth. The longer the system is running, the poorer the soil is. Measured point of different depths of soil temperature recovery ability is different, mainly affected by the local stratigraphic structure. The research results provide a reference for the application and operation management of ground-source heat pump system in underground engineering.