制冷系统中应用R22/R142b非共沸混合制冷剂时冷凝温度和蒸发温度的确定

R22／R142b非共沸混合制冷剂在冷凝器和蒸发器中其冷凝温度和蒸发温度是变化的。混合制冷剂浓度、冷凝压力和蒸发压力的不同，都会导致其最高冷凝温度、最低冷凝温度、最高蒸发温度和最低蒸发温度发生变化。因此，压力、温度和浓度等参数的选取是R22／R142b应用中需要解决的问题。本文利用溶液热力学的有关定律，采用严密的数学推导及定性分析导出它们之间的相关关系式，并绘制相关曲线和图表，为R22／R142b的应用提供了方便、可靠的依据和方法。

Confirmation of the Condensation Temperature and Evaporation Temperature in Refrigeration System Using R22/R142b Non-azeotropic Mixture Refrigerant

The condensation temperature and evaporation temperature are variational in condensator and evaporator using R22/R142b non-azeotropic mixture refrigerant.The highest condensation temperature,the highest evaporation temperature,the lowest condensation temperature and the lowest evaporation temperature change with the thickness of mixturerefrigerant, condensation pressure and evaporation pressure.So the selection of pressure,temperature and thickness is a problem need to be resolved.According to the correlative theory of liquor thermodynamics,the correlative relation of these parameters in concluded,the correlative curve and table is drawn.A convenient reliant gist and method for the application of R22/R142b is provided.