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为了提高空气源热泵空调系统运行性能,研究了一套采用变回水温度控制策略的空气源热泵机组的制冷性能。实验研究表明,变回水温度工况可满足室内冷负荷需求。与传统采用定12℃回水温度的空气源热泵空调系统相比,COP更高,耗电量更小,是一种高效节能的空气源热泵空调系统控制方法。此外,所建立的Dymola模型从理论上验证了实验结果,在此基础上模拟实际空调系统的能耗,模拟结果表明,COP由3.99提高至4.39,提高了10%。
In order to improve the performance of air source heat pump air conditioning system, a set of air source heat pump using variable temperature control strategy backwater refrigeration performance. Experimental studies show that changing back to water temperature conditions can meet the indoor cooling load requirements. Compared with the traditional air-source heat pump air-conditioning system with 12 ℃ return water temperature, the COP is higher and the power consumption is smaller. It is an energy-efficient air-source heat pump air-conditioning system control method. In addition, the established Dymola model validates the experimental results theoretically and simulates the energy consumption of the actual air-conditioning system. The simulation results show that the COP increases from 3.99 to 4.39, an increase of 10%.