Abstract The ground source heat pump (GSHP) system is a widely used energy-saving system. In the study presented in this paper, the thermal performance of a GSHP system in the large building was monitored. The system heating temperature and humidity accord with human comfort index. Moreover, 1131 tons of standard coal and 4641 tons of CO2 emission can be saved. The results show that the ground source heat pump (GSHP) system of this large building has high efficiency and remarkable energy saving benefit. The economy of different heating modes in large buildings is compared. As a result, the solar energy coupled ground source heat pump system (SGSHP) was more economical up to the 13th year of operation, while the GSHP was more economical after the 13th year. The influence of ground heat exchanger (GHE) spacing on economy is further analyzed. The results show that the economic efficiency of SGSHP system will be reduced with the increase of GHE spacing. It was concluded that SGSHP was not suitable for long running heating systems in large buildings.

中文翻译：

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地源热泵系统热力性能与经济性分析——以大型建筑为例

摘要 地源热泵（GSHP）系统是一种应用广泛的节能系统。在本文介绍的研究中，对大型建筑中地源热泵系统的热性能进行了监测。系统加热温度和湿度符合人体舒适度指标。此外，可节约标准煤1131吨，减少二氧化碳排放4641吨。结果表明，该大型建筑的地源热泵（GSHP）系统效率高，节能效果显着。比较了大型建筑中不同采暖方式的经济性。因此，太阳能耦合地源热泵系统（SGSHP）在运行第 13 年之前更加经济，而 GSHP 在第 13 年之后更加经济。进一步分析了地热换热器（GHE）间距对经济性的影响。结果表明，SGSHP系统的经济效益会随着GHE间距的增加而降低。得出的结论是，SGSHP 不适用于大型建筑物中长时间运行的供暖系统。