分析了地源热泵地埋管周围岩土热阻的随机性,研究了岩土随机热阻及负荷对地源热泵地埋管换热性能的影响。基于热阻随机分析,提出了地源热泵地埋管的可靠性设计方法,得出了可靠度计算公式。结合工程实例进行计算,并与确定性设计方法进行了对比分析。计算结果表明,岩土热阻的变异性对地源热泵地埋管的设计影响较大,可靠性理论对地源热泵地埋管的随机传热性能研究有重要意义。 The randomness of geothermal resistance around ground tube of ground source heat pump is analyzed. The influence of random thermal resistance and load of geotechnical on ground tube heat exchange performance of ground source heat pump is studied. Based on the stochastic analysis of thermal resistance, a method of reliability design for buried pipe of GSHP was put forward, and the formula of reliability calculation was obtained. Combining with the engineering example, the author makes a comparative analysis with the deterministic design method. The results show that the variability of geothermal resistance has a great influence on the design of ground source heat pump buried pipe, and the reliability theory is of great significance to the study of random heat transfer performance of ground heat pipe buried pipe.