Solubility and Miscibility for the Mixture of (Ethyl Fluoride + Polyol Ester Oil)

Abstract

Vapor−liquid equilibrium (VLE) data of lubricating oil + refrigerant mixtures are necessary for the design and simulation of the refrigeration system. In this paper, the saturated vapor pressure data and VLE data of different mass fractions of the mixture (ethyl fluoride (HFC-161) + polyol ester oil (POE)) in the temperature range from (253 to 333) K were measured by a single-phase cycle method. Throughout the observation of the overall experiment, there was no stratification and no sediment generation, and the color of liquid had no change in the equilibrium cell before and after the experiment. The above-mentioned content suggested that the different ratios of HFC-161 and lubricating oil POE could be miscible. Meanwhile, the saturated vapor-pressure data of the mixture (HFC-161 + POE) revealed that POE had a very small effect on the saturated vapor pressure of the mixture (almost negligible) when the mass fraction of lubricating oil was less than 0.1 of the mixture; POE had a bigger effect on the satura...