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本文提供一种为应用毛细管膨胀元件的家用电冰箱确定R-12制冷剂最佳充注量的方法.根据早先的理论分析,制冷剂充注量在很大程度上与蒸发器和冷凝器的容积有关,但是用这种分析估算的最佳充注量偏大。对不同的充注量进行了试验与测定,所得结论是环境温度并不是主要的因素。性能系数在充注量过多时要比充注量不足时更为灵敏。具有毛细管作为调节装置的家用电冰箱制冷机组其运行特性常常对准确计算制冷剂最佳充注量造成困难。目前最佳充注量是在新产品开发时由试验加以确定的.但是这需要化费很
This paper presents a method for determining the optimum charge of R-12 refrigerants for household refrigerators using capillary expansion elements.According to previous theoretical analysis, the refrigerant charge largely depends on the evaporator and condenser Of the volume, but with this analysis the estimated maximum charge is too large. Experiments and measurements of different charge volumes concluded that ambient temperature is not a major factor. The coefficient of performance is more sensitive when the charge is too much than when the charge is low. The operating characteristics of domestic refrigerator refrigeration units with capillaries as regulators often cause difficulties in accurately calculating the optimal charge of refrigerant. At present, the best charge is determined by the test at the time of new product development, but this requires a very fee