Experimental measurements and correlation of vapor–liquid equilibrium and critical data for the CO2 + R1234yf and CO2 + R1234ze(E) binary mixtures

Abstract : Isothermal (P-x-y) vapor–liquid equilibrium data for the CO2 + 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) binary system are reported at seven temperatures ranging from 283.15 K to 353.15 K. The experimental values were measured using a static–analytic type apparatus coupled with two electromagnetic capillary samplers (Rolsi™, Armines' patent) for repeatable and reliable equilibrium phase sampling and handling. Moreover, for the four temperatures above the critical temperature of pure CO2 (304.3 K), the mixture critical compositions (xc) and pressures (Pc) were calculated at each temperature using extended scaling laws. In a second step, the critical loci of the CO2 + R1234yf and CO2 + trans-1,3,3,3-tetrafluoroprop-1-ene [R1234ze(E)] were measured over the whole composition range using a synthetic-dynamic type apparatus. The subcritical and critical experimental data determined in this study were compared to those available in the open literature and were correlated using the Peng–Robinson equation of state with temperature-dependent binary interaction parameters.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-01169747
Contributeur : Marie-Claude Watroba <>
Soumis le : jeudi 28 janvier 2016 - 11:12:12
Dernière modification le : lundi 12 novembre 2018 - 11:04:14

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Niramol Juntarachat, Alain Valtz, Christophe Coquelet, Romain Privat, Jean-Noel Jaubert. Experimental measurements and correlation of vapor–liquid equilibrium and critical data for the CO2 + R1234yf and CO2 + R1234ze(E) binary mixtures. International Journal of Refrigeration, Elsevier, 2014, pp.141-152. ⟨10.1016/j.ijrefrig.2014.09.001⟩. ⟨hal-01169747⟩

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