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建立了地源热泵岩土换热器的简易数理模型 ,计算分析了竖直埋管的岩土换热器性能 ,并在重庆和上海两地进行了岩土换热器试验 ,发现短期运行参数与实验数据一致 ,长期连续运行性能参数小于实际值。计算分析和试验结果表明 ,岩土性能及由年平均温度决定的岩土原始温度对岩土换热器性能有显著影响。在砂岩中设置的换热器比沉积土中的性能好。岩土原始温度越低 ,换热器夏季的换热性能越强。综合考虑地质气候条件 ,上海、重庆两地都具有采用岩土换热器组建地源热泵的可行性
A simple mathematical model of ground-source heat pump rock-soil heat exchanger was established. The performance of rock-soil heat exchanger in vertical buried pipe was calculated and analyzed. The geothermal heat exchanger test was carried out in Chongqing and Shanghai. The short-term operating parameters Consistent with the experimental data, long-term continuous operation performance parameters less than the actual value. Computational analysis and test results show that the geotechnical properties and the original geotechnical temperature, which is determined by the annual mean temperature, have a significant impact on the performance of rock and soil heat exchangers. The heat exchanger set in the sandstone is better than the soil in the sediment. The lower the original temperature of geomaterials, the stronger the heat exchange performance in summer. Considering the geological and climatic conditions, both Shanghai and Chongqing have the feasibility of using geothermal heat exchangers to build geothermal heat pumps