Abstract:For shallow geothermal energy development and utilization projects with low utilization rate on the user side of buildings, the ground source heat pump system is in low-load operation, which is often not energy efficient and has poor benefits. In order to provide a basis for the management and maintenance of ground source heat pump system, the evaluation of energy saving and emission reduction effects of shallow geothermal energy development and utilization projects, and the promotion of shallow geothermal energy development and utilization, taking Jiaming branch hospital of Dongchangfu Maternal and Child Health Care Hospital as an example, the energy efficiency of ground source heat pump system under low load operation has been analyzed by using the monitored ground source heat pump system energy efficiency monitoring system, and the benefit potential has been evaluated. According to refrigeration season energy efficiency monitoring in 2022, the energy efficiency ratio of this system unit and system refrigeration has a positive correlation with the system load. Due to the low utilization rate of the indoor user side of the building, the system load is not high, the actual unit and system cooling energy efficiency is relatively low, and the actual use of the system is not good. In this paper, the cooling season benefit potential of the system has been calculated by using the temperature frequency method according to the typical year, that is, the conventional energy substitution amount in the cooling season is 94403kgce, the heat source value is 84971 yuan, the energy-saving heat source value is 40.90% in the primary energy saving rate in the cooling season, the carbon dioxide emission reduction is 233175kg, the sulfur dioxide emission reduction is 1888kg, and the dust emission reduction is 944kg.
