结合示范工程,介绍了直接膨胀式地源热泵系统的设计方法和施工要点。详细分析和讨论了系统的初投资和冬夏季运行情况。结果表明该系统运行稳定,达到了预期的效果。 Combined with the demonstration project, the design method and construction essentials of direct expansion ground source heat pump system are introduced. Detailed analysis and discussion of the initial investment of the system and winter and summer operation. The results show that the system is stable and achieves the expected result.