Measurement of vapor-liquid equilibria for the binary mixture difluoromethane (HFC-32) plus propylene (R-1270)

Abstract

Isothermal vapor-liquid equilibria data for the binary mixture of difluoromethane (HFC-32) + propylene (R-1270) at five equally spaced temperatures between (273.15 and 313.15) K were measured by using a circulation-type equilibrium apparatus. The experimental data were correlated with the Peng-Robinson equation of state (PR-EOS) combined with the Wong-Sandler mixing rule. It is confirmed that the data calculated by this equation of state are in good agreement with experimental data. Azeotropes of this mixture were found experimentally for all of the temperatures studied here.