Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Study on Isochoric Specific Heat Capacity of Liquid R-410A and HFE-347pcf2

Matsuguchi, A., Kagawa, N., Koyama, S.
Int. J. Thermophys. 2010, 31, 4-5, 727-739
ABSTRACT
The isochoric heat capacity (c v ) of R-410A [a mixture of 49.81 mass% difluoromethane (HFC-32) + 50.19 mass% pentafluoroethane (HFC-125)] and 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethylether (HFE-347pcf2) was measured at temperatures from 277 K to 400 K and at pressures up to 30 MPa. The reported density measurements for R-410A and HFE-347pcf2 are in the single-phase region and cover a density range above 0.92 g*cm-3 and 1.33 g*cm-3, respectively. The measured data of R-410A are compared with data reported by other researchers. Also, the measured data of R-410A are examined with an available equation of state. As a result, it is found that the present c v data for R-410A agree well with those by other researchers and the calculated values with the equation of state in the measurement range except near the critical isochore.
Compounds
# Formula Name
1 CH2F2 difluoromethane
2 C2HF5 pentafluoroethane
3 C4H3F7O 2,2,2-trifluoroethyl 1,1,2,2-tetrafluoroethyl ether
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
  • 3
  • Molar heat capacity at constant volume, J/K/mol ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vacuum adiabatic calorimetry
  • 263
  • POMD
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 263
  • POMD
  • 1
  • 2
  • Molar heat capacity at constant volume, J/K/mol ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mass fraction - 1; Liquid
  • Liquid
  • Vacuum adiabatic calorimetry
  • 381
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mass fraction - 1; Liquid
  • Liquid
  • Pycnometric method
  • 381