中文摘要：

采用ANSYS软件对水平、竖直、桩基螺旋地埋管换热器进行建模。在定加热负荷、定入口水温两种设计工况下，对3种地埋管换热器的出口水温进行了数值计算，以评价地埋管换热器的换热性能。在设定条件下，竖直地埋管换热器的换热性能最优。

英文摘要：

The calculation models of different buried heat exchangers including horizontal, vertical and pile spiral types are built using ANAYS software. Under the design conditions of constant heating load and constant inlet water temperature, the outlet tem- peratures of three buried heat exchangers are calculated to evaluate the heat transfer performance of buried heat exchangers. The vertical buried heat exchanger has the optimal dition. heat transfer performance under the given con-