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Internal Performance of a Refrigerant Mixture in a Two-Evaporator Refrigerator 双蒸发器冰箱中制冷剂混合物的内部性能
当制冷剂混合物用作制冷系统中的工质时,温度在恒压沸腾过程中升高,在恒压冷凝过程中降低。如果制冷应用需要在一定的温度范围内冷却流体,则该温度范围与蒸发温度的匹配可能会提高性能系数。二室家用冰箱中的空气冷却可以接近理想的冷却应用。本文介绍了使用50%R12/R114混合物的双蒸发器系统的一些实验测量,并将该系统与单独使用R12的系统的性能进行了比较。观察到混合物温度的变化,尽管与最大可能值相比,蒸发器中的压降降低了COP的实际变化。 引文:研讨会,ASHRAE交易,1985年,第91卷,pt。1B芝加哥
When a refrigerant mixture is used as the working substance in a refrigerating system, the temperature rises during a constant-pressure boiling process and falls during a constant-pressure condensation. If the refrigeration application requires cooling a fluid through a temperature range, the match of this range with the evaporating temperatures will potentially result in an improved coefficient of performance. The cooling of air in the two-compartment domestic refrigerator can approximate the desirable cooling application.This paper presents some experimental measurements on a two-evaporator system with a 50% mixture of R12/R114 and compares that system to the performance of a system using R12 alone. The varying temperatures of the mixture are observed, although pressure drop in the evaporators reduces the actual change in the COP in comparison to the maximum possible.
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