Simulation study on charging/discharging processes of condensing regenerators

 In order to solve the problem that the traditional single-stage compression air-source heat pump (ASHP) has poor heating performance in severe cold zone and cannot operate at extremely low ambient temperature, proposes a combined system of ASHP and low-temperature hot water floor radiant heating based on phase change heat storage technology. Constructs a system model, studies the charging/discharging processes of a condensing regenerator, which is the key component of this system, and analyses the dynamic operation characteristics of the condensing regenerator. The results show that the heat storage capacity of the condensing regenerator can reach 100.59 kWh after continuously charging process of 14 hours, while the average heat storage rate and the COP are 7.19 kW and 1.97, respectively. The condensing regenerator can continuously release heat for 10 hours during discharging process, the supply water temperature is at least 40 ℃, and the average heat release rate is 10.06 kW, achieving all-day continuous heat supply.