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地下水渗流对地埋管换热器与岩土体间的换热过程具有重要影响,为保证埋管的换热效率,在实际工作中需考虑渗流对埋管铺设方式的影响。该文根据埋管的实际换热过程将其边界设定为以年为周期变动的热通量边界,同时对传统的埋管铺设方式作了改进,并对其在渗流场中的传热过程进行了数值模拟。结果表明,改进后的方案能有效提高埋管的换热效率。
Groundwater seepage has important influence on the heat exchange between ground heat exchanger and rock soil. To ensure the heat transfer efficiency of buried pipe, the influence of seepage on the laying of buried pipe must be considered in practical work. According to the actual heat exchange process of the buried pipe, the boundary of the pipe is set as the boundary of the heat flux which changes with the annual cycle. At the same time, the traditional laying method of the buried pipe is improved, and the heat transfer process in the seepage field The numerical simulation was carried out. The results show that the improved scheme can effectively improve the heat transfer efficiency of the buried pipe.