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研究了现代空调和制冷系统中非共沸制冷剂发生的组分迁移问题 .研究发现 ,组分迁移现象的 4种引发机理都与混合工质的分馏有关 .本文模拟了工质在换热器中的分馏滞流 .将换热器分解成若干微元 ,选用恰当的空泡数学模型 ,计算各组分在换热器中的滞留量 .系统的循环浓度根据换热器中制冷剂的分馏滞留程度来计算 .通过模拟研究 ,证明了模型的可靠性 .该研究结果可以应用于提高非共沸制冷剂在制冷设备应用中的可靠性和效率 .
The problems of components migration in non-azeotropic refrigerants in modern air-conditioners and refrigeration systems were studied. It was found that the four mechanisms of component migration were all related to the fractionation of mixed working fluids. In the fractional stagnation flow. The heat exchanger is broken down into a number of micro-yuan, the selection of the appropriate mathematical model of the bubble to calculate the retention of each component in the heat exchanger. The circulating concentration of the system according to the heat exchanger refrigerant fractionation The degree of retention was calculated.Through the simulation study, the reliability of the model was proved.The results of this study can be applied to improve the reliability and efficiency of non-azeotropic refrigerants in refrigeration equipment applications.