土壤源热泵在地下工程中空调工况运行实验研究

EXPERIMENTAL STUDY OF GROUND SOURCE HEAT PUMP OPERATED IN AIR-CONDITIONING WORKING CONDITION IN UNDERGROUND PROJECT

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 multifunctional experiment platform of ground source heat pump system of underground project in East China as the research object, through the experimental source heat pump for the cooling operation performance of the the summer was tested. The results show that it takes about underground project in East China, the release heat per unit study, the operation characteristics of buried pipe ground typical large waste heat room in the underground project in 12 hours to start buried pipe ground source heat pump for buried pipe length is about 41 W/m. In the early operation period of the system, the soil temperature raises the fastest, and the increase rate decreases with the increase of ground depth. The longer the system operates, the more slowly the recover of soil is. The soil temperature at different depth is mainly influenced by soil property. The research results provide the reference for the application of ground source heat pump system in the underground project and operation management.