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本文就如何减轻竖直U型地埋管换热器2个支管间的热短路损失、提高地源热泵系统的单位井深换热量进行了研究。在对竖直U型地埋管钻孔内准三维传热模型进行研究的基础上,运用数值模拟的方法对竖直U型地埋管换热器有、无隔热板2种情况下的换热能力进行了分析。
In this paper, how to reduce the thermal short-circuit loss between the two branch pipes of vertical U-tube heat exchanger and how to improve the heat exchange per unit well depth of the ground-source heat pump system were studied. Based on the research on the quasi-3D heat transfer model in the vertical U-shaped borehole, the numerical simulation is used to analyze the vertical U-shaped borehole heat exchanger with and without the heat shield Heat exchange capacity was analyzed.