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Extrapolation of accurate equations of state outside the range of the experimental data.

Author(s) : REUCK K. M. de

Type of article: Periodical article

Summary

Equations of state are mainly in empirical form and may lead to inaccuracies outside the limits of the data used to produce them. However, where it is required to use a reference equation outside these limits, particularly in very high or very low pressure or temperature fields, the author suggests approaches which may be used. For high temperatures and pressures, shock wave techniques may establish reference points, and Brown's characteristic curves, particularly the Joule-Thomson inversion curve, form useful check systems. For zero pressure conditions the second virial coefficient may be examined, being anchored by the Boyle temperature. At the low temperature end of the saturation curve care must be taken that properties are behaving with physical correctness. D.W.H.

Details

  • Original title: Extrapolation of accurate equations of state outside the range of the experimental data.
  • Record ID : 1993-3207
  • Languages: English
  • Source: IUPAC thermodyn. Tables Proj. Cent. - PC-D45-1; 18 p.; 4 fig.; 1 tabl.; 17 ref.; append.
  • Publication date: 1991/11
  • Document available for consultation in the library of the IIR headquarters only.

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