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中文摘要：
根据地下连续墙内埋管的结构形式和传热特点,建立开挖面以上和开挖面以下两部分的地下连续墙内埋管传热模型,并采用格林函数法推导其解析解.该模型能求解带有随时间变化的内热源、非齐次边界条件的复合介质热传导问题,可用于地下连续墙及周围土体内的温度场分析,还可用于地下连续墙内埋管布置形式、埋管间距以及间歇运行时间等参数的优化分析.
英文摘要：
The technology of embedding absorber tubes in diaphragm walls is a new trend for implementing ground source heat pump.As the diaphragm walls are located in the ground where temperature remains constant all year around,the shallow geothermal energy may be obtained for space cooling and heating by circulating the medium in absorber tubes.According to the structure and heat transfer characteristics of geothermal heat exchangers,two heat transfer models and their analytical solutions are obtained for the sections over and under the excavation surface.The models can be employed to calculate the temperature field of diaphragm walls and the surrounding soil under non-homogeneous boundary conditions and varying internal heat source.The models can also be used to optimize the system parameters,including the layout and spacing of heat exchangers,the running time of intermittent operation.
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