Applicability research on ground-source heat pump system based on building load characteristics

Presents two indexes of building load characteristics which influencing the operation performance of ground-source heat pump system. One is the ratio of the annual accumulated cooling load to the annual accumulated heating load, represented by R, and the other is the ratio of the maximum cooling load to the maximum heating load, represented by K. Taking a typical office building in cold climate zone as an example, simulates the inlet and outlet temperature of the ground heat exchanger, the soil temperature and the COP of heat pump for five types of R values and two types of K values. The results indicate that it is suitable for ground-source heat pump system when the R value ranges from 0.6 to 0.8. Also gives the design basis for ground heat exchanger in the conditions of different K values.