Abstract
The kinematic viscosities of R410A and R407C refrigerant−oil mixtures in the saturated liquid phase were measured at the temperatures ranging from (256.15 to 336.15) K when the mass fractions of lubricant (polyol ester lubricant) were (0, 2, 5, 8, and 10)·10−5. The experimental results show that, with the addition of lubricant, there is a significant impact on the kinematic viscosity of R410A and R407C refrigerant−oil mixtures in the saturated liquid phase. With the increase of lubricant concentration, the liquid kinematic viscosities of R410A and R407C refrigerant−oil mixtures under the saturation condition significantly increase, and the impact of lubricant gradually decreases with the increase of temperature.
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