Energy consumption analysis of transportation for sewagesource heat pump systems

System form and operation mode of the sewagesource heat pump system impact significantly on the system energy consumption. Presents three system forms, namely one unit connected one pump system, parallel system and hybrid system, and points out their advantages and disadvantages respectively. Taking the heat pump systems with two, three and four compressors as examples, sets up the energy consumption models under different operation modes of different systems. Calculates the energy consumption ratio of one unit connected one pump system under different operation modes. The results show that under different loads, energy consumption of parallel coupling operation mode and inverter operation mode is reduced by 1.8%~17.6% and 3.1%~24.8% respectively, compared with the constant frequency operation mode, providing the references for design of the sewagesource heat pump system.