提出了适合工程设计计算的水平螺旋地埋管换热器的传热模型,该模型以无限大介质中的一维非稳态传热为基础,同时考虑单位面积埋管长度的影响及长期平均负荷和短期脉冲负荷的不同作用。讨论了单位面积埋管长度和土壤的热物性对水平螺旋地埋管换热器的影响。结合工程实例,计算了所需的埋管长度和埋管的占地面积,与竖直埋管系统进行了比较。 The heat transfer model of a horizontal spiral tube-to-tube heat exchanger, which is suitable for engineering design and calculation, is proposed. The model is based on one-dimensional unsteady heat transfer in an infinite medium and takes into account the influence of the length of buried pipe per unit area and the long-term average Different roles of load and short-term pulse load. The effects of the buried pipe length per unit area and the thermophysical properties of the soil on the horizontal spiral ground heat exchanger were discussed. Combined with engineering examples, the required length of buried pipe and buried pipe were calculated and compared with vertical buried pipe system.