Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Vapor-Liquid Equilibria of the Fluoroethane (R161) + 1,1,1,2-Tetrafluoroethane (R134a) System at Various Temperatures from (253.15 to 292.92) K

Dong, X.[Xueqiang], Gong, M.[Maoqiong], Zhang, Y.[Yu], Wu, J.[Jianfeng]
J. Chem. Eng. Data 2008, 53, 9, 2193-2196
ABSTRACT
The vapor-liquid equilibrium data for the binary system of fluoroethane (R161) + 1,1,1,2-tetrafluoroethane (R134a) at a temperature range from (253.15 to 292.92) K were measured with a recirculation method. The experimental results including temperatures, pressures, and compositions were correlated using the Peng-Robinson equation of state with two different mixing rules, the van der Waals mixing rule with a single binary interaction parameter, and the Huron-Vidal mixing rule in which the mole excess Gibbs free energy was obtained with the NRTL activity coefficient model. The calculated results agree well with the experimental data, and the largest deviations of the pressure and vapor mole fraction between the experimental data and the correlated results are 0.3642 % and 0.0073, respectively.
Compounds
# Formula Name
1 C2H5F fluoroethane
2 C2H2F4 1,1,1,2-tetrafluoroethane
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 4
  • POMD
  • 1
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mole fraction - 1; Gas
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Ebulliometric method (Recirculating still)
  • 39
  • POMD
  • 1
  • 2
  • Mole fraction - 1 ; Liquid
  • Mole fraction - 1; Gas
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Chromatography
  • 39