Simulation and Analysis of Air-Ground Dual source Heat Pump Operating Efficiency

AbstractBased on the simulation study of air-ground dual heat source heat pump system in the actual project of an office building in Shenyang, this paper compares and analyzes the operating efficiency of dual heat source heat pump system and single heat source heat pump system in summer and winter. The target project adopts air-ground source heat pump coupling operation for heating in winter, ground-source heat pump operation for cooling in summer. Using software TRNSYS, two heat pump systems simulation models are established respectively. Through simulating the hourly changes of the heat pump COP, analyzing the results of system operation, the feasibility of the system is discussed. Based on the series of work, a conclusion can be drawn, that is, in terms of operating efficiency, the COP of the two systems both satisfy the normal operating demand, but the dual one is more stable and has a higher COP