Isothermal vapor–liquid equilibrium data for the trifluoromethane (R23) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) system at temperatures from 254 to 348 K

Hakim Madani (1) , Alain Valtz (2) , Fan Zhang (2) , El Abbadi Jamal (2) , Céline Houriez (2) , Patrice Paricaud (3, 2) , Christophe Coquelet (2)

1 LESEI - Laboratoire d'Etudes des Systèmes Energétiques Industriels
2 CTP - Centre Thermodynamique des Procédés
3 UCP - Unité de Chimie et Procédés

_______________________________________________________________________ In this study, we present new experimental data of vapor-liquid equilibrium for the binary system trifluoromethane (R23) + 2,3,3,3-tetrafluoropropene (R1234yf), measured at 254.10, 273.43, 293.24, 303.17, 318.08, 332.97, and 348.40 K and at pressure ranging from 0.1568 to 4.3553 MPa. A " static-analytic "-type apparatus is used to do the measurements, with sampling of the equilibrium phases via capillary sampler (ROLSI TM). We used two different methods to model the obtained isothermal P-x-y data: 1) the Peng-Robinson cubic equation of state, incorporating the Mathias-Copeman alpha function, combined with the NRTL excess free energy model and Wong-Sandler mixing rules, and 2) the PC-SAFT equation of state. Both models show a very good agreement with the experimental data. ________________________________________________________________________

Mots clés: VLE data; R23; R1234yf; critical point; PC-SAFT; EoS

Domaines: Génie des procédés

Hakim Madani, Alain Valtz, Fan Zhang, El Abbadi Jamal, Céline Houriez, et al.. Isothermal vapor–liquid equilibrium data for the trifluoromethane (R23) + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) system at temperatures from 254 to 348 K. Fluid Phase Equilibria, 2016, ⟨10.1016/j.fluid.2016.02.005⟩. ⟨hal-01305721⟩