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

Density Measurements for Ethane, Carbon Dioxide, and Methane + Nitrogen Mixtures from 300 to 470 K up to 137 MPa Using a Vibrating Tube Densimeter

Gomez-Osorio, M. A.[Martin A.], Browne, R. A.[Robert A.], Diaz, M. C.[Mauricio Carvajal], Hall, K. R.[Kenneth R.], Holste, J. C.[James C.]
J. Chem. Eng. Data 2016, 61, 8, 2791-2798
ABSTRACT
This paper presents experimental p ? T measurements for nitrogen + methane mixtures containing approximately 0.25, 0.50, and 0.75 mole fraction methane at T = 300, 350, 400, and 470 K with p = 10 137 MPa. Methane, nitrogen, and argon are used as calibration fluids, and measurements on carbon dioxide and ethane verify the calibration methodology. An error contribution analysis indicates that the expanded uncertainty (95% confidence limit) is 0.1 kg*m 3 for densities lower than 200 kg*m 3 and 0.0005 .rho. for higher densities. The GERG-2008 equation of state describes the measurements for all three mixtures to within +-0.0015*? with the largest deviations occurring at the highest pressures.
Compounds
# Formula Name
1 N2 nitrogen
2 CH4 methane
3 CO2 carbon dioxide
4 C2H6 ethane
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
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 29
  • POMD
  • 4
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 33
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Mole fraction - 2; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Vibrating tube method
  • 145