上海某垂直单U地埋管钻孔换热能力试验研究

Experimental study on heat exchange capacity of certain typical buried vertical tube in Shanghai

通过对上海某典型地质钻孔垂直单U地埋管换热能力进行现场试验,得出了夏季散热及冬季取热模式下单孔的换热能力。结果表明,在本测试工况条件下,冬季工况每延米取热量约为夏季工况散热量的65%,冬、夏季钻孔取放热能力明显不平衡。试验结果能为类似地质条件下地源热泵系统的设计及施工提供有益参考。

The field testing was carried out in Shanghai soft soil areas for the heat exchange capacity in a typical buried vertical tube with Ground Source Heat Pump（GSHP） in heating and cooling operation mode,and the initial ground temperature was tested.The average quantity of heat release per meter and heat absorption was obtained,and the results show that the ratio of the average quantity of heat absorption per meter to heat release is about 65%,so the heat exchange capacity in heating and cooling operation mode was clearly imbalance in the typical vertical ground borehole.The testing results could provide the helpful references to the design of the GSHP and its construction in the similar geological conditions.