Ho, QN Lee, BG Park, JY Kim, JD Lim, JS 2024-01-21T06:06:39Z 2024-01-21T06:06:39Z 2021-09-04 2004-11-09 0378-3812 https://pubs.kist.re.kr/handle/201004/137063 Isothermal vapor-liquid equilibria data for the binary mixture of propylene (R-1270) + 1,1,1,2-tetrafluoroethane (HFC-134a) 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 was confirmed that the data calculated by this equations of state had a good agreement with experimental data. In addition, we used a simple equation obtained from the fundamental equation of phase equilibrium and NRTL activity coefficient model to approximately evaluate the azeotropic points of this mixture at investigated temperatures. A small difference between experimental azeotropic points and calculated ones corresponding to non-randonmess parameter alpha equal to 0.2 was found. (c) 2004 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV MIXING RULE STATE EQUATION Measurement of vapor-liquid equilibria for the binary mixture of propylene (R-1270)+1,1,1,2-tetrafluoroethane (HFC-134a) Article 10.1016/j.fluid.2004.08.028 1 FLUID PHASE EQUILIBRIA, v.225, no.1-2, pp.125 - 132 FLUID PHASE EQUILIBRIA 225 1-2 125 132 scie scopus 000227636500015 2-s2.0-19344378065 Thermodynamics Chemistry, Physical Engineering, Chemical Thermodynamics Chemistry Engineering Article MIXING RULE STATE EQUATION propylene (R-1270) HFC-134a azeotropic mixture vapor-liquid equilibria (VLE) Peng-Robinson equation of state (PR-EOS)