Thermodynamics Research Center / ThermoML | International Journal of Thermophysics

Compressed Liquid Density and Helmholtz Equation of State of Fluoroethane (R161)

Qi, H.[Haiyan], Fang, D.[Dan], Gao, K.[Kehui], Meng, X.[Xianyang], Wu, J.[Jiangtao]
Int. J. Thermophys. 2016, 37, 6, 55
ABSTRACT
In this study, the compressed liquid density of Fluoroethane (R161, CAS No.353-36-6) were measured using a high pressure vibrating-tube densimeter in the temperature range from (283 to 363) K and pressures up to 100 MPa. An helmholtz equation of state for R161 was developed from this density measurements and other experimental thermodynamic property data from the literature. The formulation is valid for temperatures from the triple point temperature 130 K to 400 K and pressures up to 100 MPa. The approximate uncertainties of properties calculated with the new equation of state are estimated to be 0.2 % in the compressed liquid density, 0.1 % in saturated density below 330 K, 0.1 % in vapor pressure above 210 K and are inscreased to 0.6 % at lower temperatures. Deviations in the critical region are higher for all properties except vapor pressure. The extrapolation behavior of the new formulation at high temperatures and high pressures is reasonable.
Compounds
# Formula Name
1 C2H5F fluoroethane
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
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Vibrating tube method
  • 126