中文摘要：

采用对钻孔内、外2个传热空间分别讨论的传热分析方法，建立土壤耦合热泵系统垂直埋管换热器传热的数学模型。模拟分析冬季换热过程中埋管周围土壤温度的变化，得出取热工况下地埋管换热器换热性能的影响因素。模拟结果将有助于提高热泵系统的循环经济性能。

英文摘要：

Exploiting a heat transfer analysis method, which discusses both inner and outer space of the borehole in the ground, establishes heat transfer mathematical model for vertical geothermal heat exchanger in ground-coupled heat pump system. Analyzes and simulates the variation of the soil temperature around geothermal heat exchanger, and presents some factors influencing the performance of the geothermal heat exchanger. Simulation results are very helpful to improve the economic performance of the heat pump system.