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Backone family of equations of state. 1. Nonpolar and polar pure fluids.

Author(s) : MÜLLER A., WINKELMANN J., FISCHER J.

Type of article: Article

Summary

The Helmholtz energy is the sum of the hard-body contribution, the attractive dispersion force contribution and either the quadrupolar or dipolar contribution. Here, a new expression for the attractive dispersion force contribution is constructed by a simultaneous correlation of experimental data of methane, oxygen, and ethane. The resulting equations for the Helmholtz energy with only three or four substance-specific parameters are tested for several non-polar, quadrupolar, and dipolar fluids. In the correlation of large data sets good results are obtained. The significance of the approach, however, is in the good to excellent prediction of all thermodynamic properties in the whole fluid region based on a parameter fit to only four experimental data: two vapour pressures and two saturated liquid densities.

Details

  • Original title: Backone family of equations of state. 1. Nonpolar and polar pure fluids.
  • Record ID : 1997-1338
  • Languages: English
  • Source: AIChE J. - vol. 42 - n. 4
  • Publication date: 1996/04
  • Document available for consultation in the library of the IIR headquarters only.

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