根据制冷剂与矿物油的相互溶解度关系，将其分为完全混溶、部分混溶或不混溶。在制冷剂R-502和氨蒸发期间，通过测量siz通道水平蛇形盘管中的电传递热流和管壁温度来确定局部传热系数。R-502实验的蒸发温度接近-14华氏度（-26摄氏度），矿物油部分可混溶。在2%至10%的油浓度下，传热系数比无油R-502低30%至50%。在1%或更低的油浓度下，减少量很小，在许多应用中可能会被忽略。氨实验是在蒸发温度为- 10华氏度至-40华氏度（-23摄氏度至-40摄氏度）。矿物油是不混溶的，形成了一种焦油状的污泥，沿着管子底部聚集。与无油氨相比，传热系数降低了50%-90%。单位:双引文:阿什雷交易，1986年，第92卷，第。1A，旧金山

Refrigerants are classified as completely miscible, partially miscible or immiscible according to their mutual solubility relations with mineral oils. Local heat transfer coefficients were determined from measurements of electrically delivered heat flux and tube wall temperatures in a siz-pass horizontal serpentine coil during evaporation of refrigerants R-502 and ammonia.The R-502 experiments were at evaporating temperatures near -14 F (-26°C) where mineral oil is partialy miscible. At 2% to 10% oil concentration the heat transfer coefficient is reduced by 30% to 50% below that of oil-free R-502. At 1% or less oil concentration the reduction is small and might be neglected for many applications.The ammonia experiments were performed at evaporating temperatures in the range of -10F to -40 F (-23°C to -40°C). The mineral oil was immiscible and formed a tar-like sludge that collected along the bottom of the tube. The heat transfer coefficient is reduced by 50% to 90% below that of oil-free ammonia.Units: Dual