Operation energy consumption of ground-source heat pump systems

Establishes a mathematical model for ground-source heat pump systems. Taking a complex building as the example, analyses the influences of air conditioning water temperature, length of buried pipes, initial soil temperature and soil thermal conductivity on the operation energy consumption, and the influence of buried pipe operation on the soil temperature. The results show that increasing 1 ℃ of the chilled water temperature could reduce about 3.5% of the cooling electricity consumption. Increasing 1 ℃ of the hot water temperature could increase about 2.3% of the heating electricity consumption. Increasing 10% of the length of buried pipes could reduce about 0.43% of the cooling electricity consumption and 0.56% of the heating electricity consumption. Increasing 1 ℃ of the initial soil temperature could increase about 1.9% of the cooling electricity consumption and reduce about 2.4% of the heating electricity consumption. Increasing 0.1 W/(m·K) of the soil thermal conductivity could reduce about 0.22% of the cooling electricity consumption and 0.20% of the heating electricity consumption.