Capacity allocation optimization of coupled phase change energy storage system of air source heat pump

;The combination of heat pump and energy storage is an effE_Ctive means to solve the problem of power grid. A simulation platform for air source heat pump coupled phase change thermal storage heating system was built based on TRNSYS, and a new phase change tank module was established and the model was verified by the experimental data. The single factor experiment method was used to explore the influence of the change of system capacity configuration parameters on the system E_Conomy and energy consumption. The results show that the C0P of the coupled system is 13.8% higher than that of the traditional system. The operation strategy based on the demand response makes the energy saving rate of the coupling system reach 15. 68%. A multi-objE_Ctive optimization function was established with C_LC and E_C as targets to optimize the configuration parameters. The optimization results show that when the mass of phase change material is 195 kg, the temperature of phase change is 49. 5 C, and the volume of water tank is 1 m^-3 the optimization requirements of E_Conomy and energy saving can be balanced. The results provide guidance for the design requirements of different air source heat pump coupled energy storage systems.