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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。
Through field tests on the heat transfer capacity of a vertical single U ground borehole in a typical geological borehole in Shanghai, the heat transfer capacity of single hole under summer cooling and winter heat extraction mode was obtained. The results show that under the conditions of this test, the amount of heat per meter of winter condition is about 65% of that of the summer condition, and the imbalance between the heat release capacity of boreholes in winter and summer is obvious. The test results can provide useful reference for the design and construction of ground source heat pump system under similar geological conditions.