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

Solid-Liquid Equilibria for the Carbon Dioxide + 1,1-Tetrafluoroethane and Nitrous Oxide + 1,1-Tetrafluoroethane Systems

Di Nicola, G.[Giovanni], Santori, G.[Giulio], Stryjek, R.[Roman]
J. Chem. Eng. Data 2008, 53, 8, 1980-1983
ABSTRACT
A recently built experimental setup was employed for the estimation of the solid-liquid equilibria of alternative refrigerant systems. The behavior of two binaries, i.e., carbon dioxide + 1,1-tetrafluoroethane (CO2 + R134a) and nitrous oxide + 1,1-tetrafluoroethane (N2O + R134a), was measured down to temperatures of 142 K. The triple points of CO2 and N2O were measured to confirm the reliability of the apparatus. The triple point of R134a was also measured; however, the pressure at the triple point for this fluid was too low to be accurately measured with the current apparatus. All triple point data measured revealed a generally good consistency with the literature. The results obtained for the mixtures were interpreted by means of the Schroder equation.
Compounds
# Formula Name
1 C2H2F4 1,1,1,2-tetrafluoroethane
2 CO2 carbon dioxide
3 N2O nitrous oxide
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
  • 2
  • 1
  • Eutectic temperature, K ; Crystal - 2
  • Crystal - 2
  • Crystal - 1
  • Liquid
  • Gas
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 1
  • Eutectic composition: mole fraction - 2 ; Crystal - 2
  • Crystal - 2
  • Crystal - 1
  • Liquid
  • Gas
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 2
  • 1
  • Triple point temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Crystal - 1
  • Gas
  • Large-sample thermal analysis
  • 5
  • POMD
  • 2
  • 1
  • Triple point temperature, K ; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Crystal - 2
  • Gas
  • Large-sample thermal analysis
  • 13
  • POMD
  • 1
  • 3
  • Eutectic temperature, K ; Crystal - 1
  • Crystal - 1
  • Crystal - 3
  • Liquid
  • Gas
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 1
  • 3
  • Eutectic composition: mole fraction - 1 ; Crystal - 1
  • Crystal - 1
  • Crystal - 3
  • Liquid
  • Gas
  • Derived from phase diagram analysis
  • 1
  • POMD
  • 1
  • 3
  • Triple point temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Crystal - 1
  • Gas
  • Large-sample thermal analysis
  • 7
  • POMD
  • 1
  • 3
  • Triple point temperature, K ; Liquid
  • Mole fraction - 3; Liquid
  • Liquid
  • Crystal - 3
  • Gas
  • Large-sample thermal analysis
  • 10