Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Surface tension of an ethane-nitrogen solution. 1: Experiment and thermodynamic analysis of the results

Baidakov, V. G.[Vladimir G.], Kaverin, A. M.[Aleksey M.], Khotienkova, M. N.[Maria N.], Andbaeva, V. N.
Fluid Phase Equilib. 2012, 328, 13-20
ABSTRACT
The differential variation of the method of capillary rise has been employed to measure the capillary constant and calculate the surface tension of ethane-nitrogen solutions. Experiments have been conducted in the temperature range from 93.15 K to 283.15 K at pressures up to 4 MPa. The (p, T)-projection of the line of three-phase liquid-liquid-vapor equilibrium and the surface tension at a liquid vapor interface close to this line have been determined. Equations are developed which describe the dependence of the capillary constant and the surface tension on the temperature, pressure, and composition of the liquid phase. Experimental data on the surface tension are analyzed in the framework of thermodynamic models.
Compounds
# Formula Name
1 C2H6 ethane
2 N2 nitrogen
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
  • Surface tension liquid-gas, N/m ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Air at 1 atmosphere
  • Capillary rise
  • 80
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Gas
  • Temperature, K; Gas
  • Pressure, kPa; Gas
  • Mole fraction - 2; Gas
  • Gas
  • Equation of State Calculation
  • 80
  • POMD
  • 1
  • 2
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 2; Liquid
  • Liquid
  • Equation of State Calculation
  • 81