Vapor Phase PvTx Measurements of Binary Blends of 2,3,3,3-Tetrafluoroprop-1-ene + Propane and cis-1,2,3,3,3-Pentafluoroprop-1-ene + Propane

Abstract

The paper presents 86 PvTx measurements in the vapor phase for blends of 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) and propane and 62 PvTx measurements in the vapor phase for blends of cis-1,2,3,3,3-pentafluoroprop-1-ene (R1225ye(Z)) and propane. The R1234yf and propane blends were measured along four isochores (0.047, 0.048, 0.072, 0.095) m3·kg–1 for (268 < T < 363) K for four propane mole fractions (0.230, 0.505, 0.611, 0.709) mol·mol–1. The R1225ye(Z) and propane blends were measured along five isochores (0.032, 0.038, 0.042, 0.067, 0.090) m3·kg–1 for (303 < T < 363) K for five propane mole fractions (0.225, 0.516, 0.593, 0.690, 0.855) mol·mol–1. The data are well-predicted when fitted (1) with Fundamental Helmoltz Equations of State (EoS), Peng–Robinson EoS, and Extended Corresponding States EoS when each are coupled with a modified van der Waals one-fluid linear mixing model, and (2) with a truncated Virial EoS.