地下水渗流作用下埋管换热器动态设计研究

由于土壤换热的复杂性及地源热泵系统实际运行的耦合作用,地埋管设计需要考虑到实际地下水渗流及其动态性能。通过对某实际工程进行热响应试验,测算出该地地下水渗流速度;在此基础上建立逐时负荷-热泵机组-地埋管换热器耦合模型对该工程埋管设计进行动态分析。最后在此设计工况下对系统全年运行情况进行模拟分析,为该地源热泵系统运行提供参考依据。

Dynamic Design Research of Buried Heat Exchanger under Groundwater Seepage

Because of the complexity of the soil heat transfer and coupling performance of ground source heat pump system in actual operation, the buried pipe design need to consider the actual groundwater seepage and its dynamic performance. Based on the thermal response test of an actual project, this paper has measured the groundwater seepage velocity. And established the coupling model of hourly load , heat pump unit and ground heat exchange. Based on which the buried pipe design was completed. Finally, all year simulation analysis was conducted under the design condition, as a reference of the source heat pump system running.