Composite application of air-source heat pump and ground-source heat pump to Binzhou Aquarium

Taking Binzhou Aquarium as an example, based on the scheme selection, a composite energy system consisting of three ground-source heat pumps with refrigerating capacity of 561 kW and three air-source heat pumps with refrigerating capacity of 130 kW is selected. The operating principle and strategy of the system are presented. Compared with the traditional electric refrigeration screw unit plus gas-fired hot water boiler energy scheme, based on the analysis of system investment and operating costs, the static investment payback period of the system is 1.49 years. The system has certain advantages when used in aquarium buildings.