冷凝蓄热器蓄放热过程模拟研究

为解决传统单级压缩空气源热泵在严寒地区制热性能差、极低环境温度下无法运行的问题,提出了一种基于相变蓄热的空气源热泵联合低温热水地板辐射供暖系统.通过构建系统模型,对关键部件冷凝蓄热器的蓄放热过程进行了研究,分析了冷凝蓄热器的动态运行特性.研究结果表明:冷凝蓄热器连续蓄热14 h后,平均蓄热功率为7.19 kW,COP为...

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.