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基于竖直单U形地埋管换热器的热渗耦合传热模型,分析了岩土导热系数、岩土体积热容、岩土孔隙率、原始地温、地下水渗流速度、埋管深度、管内流体流量、地埋管进口水温及运行模式等因素对地埋管换热器换热性能的影响。进行了单因素回归分析,拟合得到了单位井深换热量及地埋管出口水温与各个参数的回归方程。
Based on the heat and moisture coupling heat transfer model of vertical single U-shaped ground tube heat exchanger, the thermal conductivity of geomaterials, the volume heat capacity of rock and soil, the porosity of rock and soil, the original ground temperature, the seepage velocity of groundwater, the depth of buried pipe, Fluid flow, buried pipe inlet water temperature and operation mode and other factors on the heat exchanger performance of ground tube heat exchanger. Univariate regression analysis was conducted and the regression equations of well depth heat exchange and outlet water temperature of buried pipe and parameters were obtained.