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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。
Due to the complexity of soil heat exchange and the coupling of ground source heat pump system, the design of buried pipe needs to consider the actual groundwater seepage and its dynamic performance. Through the thermal response test to an actual project, the seepage velocity of groundwater is calculated. On this basis, a time-dependent load-heat pump unit-ground tube heat exchanger coupling model is established to dynamically analyze the design of the buried pipe. Finally, under the condition of this design, the simulation and analysis of the whole year’s operation of the system is carried out, which provides a reference for the operation of the ground source heat pump system.