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Vapor–liquid equilibrium data for the ternary mixture of 1,1,1,2-tetrafluoroethane (HFC-134a) + 2,3,3,3-tetrafluoroprop-1-ene (HFO-1234yf) + isobutane (HC-600a) were measured at temperatures from 283.15 K to 323.15 K using a recirculation apparatus. The uncertainties of the experimental data are estimated within 5 mK, 0.5 kPa, and 0.003 for the temperature, pressure, and the equilibrium liquid and vapor mole fractions, respectively. The experimental data were compared with the predicted data by the Peng Robinson equation of state with the vdW mixing rule and the Wong Sandler mixing rule, respectively. The binary interaction parameters of each binary mixture were determined from the experimental data in literature. The results show that the predicted data agree well with the experimental data. It indicates that the PR equation can be used to predict VLE data of ternary mixture of HFC-134a + HFO-1234yf + HC-600a. The proposed ternary mixture has potential to be refrigerant with low GWP and excellent thermodynamic performance. [ABSTRACT FROM AUTHOR]

In this study , isothermal vapor–liquid equilibrium (VLE) data were measured for the binary system of fluoroethane (HFC-161) + 2,3,3,3-tetrafluoroprop-1-ene (HFO-1234yf) over the whole composition range in the temperature range from 283.15 to 323.15 K at 10 K intervals. The experimental VLE data were correlated with the Peng–Robinson equation of state. The van der Waals (vdW) one-fluid mixing rule and the Wong–Sandler (WS) mixing rule with the non-random two-liquid (NRTL) activity coefficient model were both used. The correlation results show good agreement with the experimental data. [ABSTRACT FROM AUTHOR]

Highlights: [•] Experimental VLE data for HFO-1234yf+HFC-152a were reported. [•] The mixture exhibits azeotropic and near azeotropic behaviors. [•] Temperature glide is less than 0.4K within the complete range of composition. [ABSTRACT FROM AUTHOR]

Isothermal vapor–liquid equilibrium data for the binary system of 2,3,3,3-tetrafluoroprop-1-ene (HFO-1234yf) + 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) were measured at 10 K intervals from 283.15 K to 323.15 K over the whole composition range. The uncertainties of the experimental data are estimated at ±5 mK, ±3.5 kPa, and ±0.003 for the temperature, pressure, and the equilibrium liquid and vapor mole fractions, respectively. The experimental data were correlated with the Peng–Robinson equation of state using the van der Waals mixing rule, and the binary interaction parameter was optimized to fit the experimental data. The comparison between the experimental data and the correlated results shows a good agreement. [ABSTRACT FROM AUTHOR]