Research on Heat Transfer Characteristics of Phase Change Heat Storage under Different Inlet Temperatures
High energy efficient heat pump technology is an effective technical means to solve the prob-lem of carbon emissions.Phase change heat storage technology can further improve the energy effi-ciency ratio of heat pump systems and solve the mismatch problem between heat supply and demand.Design the heat storage box of a phase change heat pump water heater,establish a three-dimensional transient model of the heat storage hot water heat exchanger,and explore the heat transfer character-istics between the inlet temperature and the phase change heat storage material.Simulation calcula-tions show that the lower the inlet temperature,the larger the heat transfer temperature difference,and the higher the heat flux density.The inlet temperature of 15℃is about 14.5%shorter than the inlet temperature of 25℃,and the time to supply 80℃hot water is about 14.5%.The simulation calculation results have verified the feasibility of thermal storage heat pump water heaters,providing a theoretical basis for further application of heat pump water heaters.
Heat Pump TechnologyPhase Change Heat StoragePhase Change MaterialHeat Transfer Characteristic
NETL
NSTL
万方数据
维普
