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

Experimental Study of PVTx Properties in the Gas Phase for Binary Mixtures of DME and HFC-134a

Chen, Q.[Qi], Deng, Z.[Zhenqian], Wu, J.[Jie], Hong, R.[Ronghua], Chen, G.[Guangming]
J. Chem. Eng. Data 2016, 61, 3, 1328-1332
ABSTRACT
This experimental study measured the pressure volume temperature composition (PVTx) properties in the gas phase for the binary system of dimethyl ether (DME) + 1,1,1,2-tetrafluoroethane (HFC-134a) at temperatures between 313.53 and 383.49 K, pressures between 541.8 and 3170.2 kPa, densities between 0.2311 and 1.4831 mol*dm 3, and compositions between 0.2326 and 0.8258 mole fractions of HFC-134a by using the isochoric method. The data were obtained with standard uncertainties of 1.5 kPa for pressure, 0.006 K for temperature, and 0.00025 for composition. Further, a truncated virial equation of state was developed for the binary DME/HFC-134a system by data fitting. The deviations generated by this equation turned out to be within +-0.13% in pressure and +-0.15% in density.
Compounds
# Formula Name
1 C2H6O dimethyl ether
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
  • 2
  • Amount density, mol/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 1; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • ISOCHOR
  • 101