ANALYSIS OF VAPOR PRESSURE AND VLE OF HFOS, HCFOS, AND THEIR BLENDS WITH CUBIC EQUATIONS OF STATE

摘要

Vapor pressure and Vapor-Liquid Equilibrium (VLE) of HydroFluoro-Olefins (HFOs),rnHydrochloroFluoro-Olefins (HCFOs), and their binary systems were calculated using different CubicrnEquations of State (CESs). As first step, the experimental vapor pressure data for pure refrigerants and thernexperimental VLE data for binary systems available in literature were collected. The selected experimentalrndata were compared with the calculated data from the most employed CESs. For the refrigerants binaryrnsystems, van der Waals mixing rules were used. For almost all the equations, the deviations between thernexperimental and calculated values are low. Finally, in order to find the most accurate CES to represent thernvapor pressure and the VLE of the studied refrigerants, an in-depth comparison between the results of therndifferent CESs was performed.