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热泵机组能效劣化特征参数是由其各主要组成部件有关能效性能劣化特征参数组成,本文使用压缩机综合效率和容积效率来表征压缩机的功效性能,使用传热系数来表征冷凝器和蒸发器的换热性能,根据能量方程、基本传热方程和计算传热系数的准则关联式建立理论循环热力计算的机理模型,通过对实际循环与理论循环的区别分析建立实际循环热力计算的黑箱模型,通过将模型应用到某一实际热泵机组中,分析了特征参数随负荷率的变化规律,重点分析了特征参数劣化在不同负荷率下对机组能效比和压缩机耗电量的影响规律。
The characteristic parameters of energy-efficiency degradation of heat pump units are composed of the characteristic parameters of energy-efficiency degradation of the main components. In this paper, compressor efficiency and volumetric efficiency are used to characterize the performance of compressors. The heat transfer coefficient is used to characterize the performance of condensers and evaporators According to the energy equation, the basic heat transfer equation and the calculation of the heat transfer coefficient of the correlation criteria to establish the theoretical cycle of the thermal calculation of the mechanism model, the actual cycle and the theoretical cycle of the differential analysis of the actual cycle of thermal calculation to establish a black box model, through The model was applied to an actual heat pump unit. The variation law of characteristic parameters with load rate was analyzed. The influence of characteristic parameters deterioration on unit energy efficiency ratio and compressor power consumption under different load rates was analyzed emphatically.