The ISM Equation of State Applied to Refrigerants View Full Text


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Article Info

DATE

1999-09

AUTHORS

H. Eslami, F. Sabzi, A. Boushehri

ABSTRACT

In this work, we apply an equation of state based on statistical–mechanical perturbation theory to liquid refrigerants and their mixtures. Three temperature-dependent parameters are needed to use the equation of state: the second virial coefficient, B2(T), an effective van der Waals covolume, b(T), and a scaling factor, α(T). The second virial coefficients are calculated from a correlation based on the heat of vaporization, ΔHvap, and the liquid density at the freezing point, ρfp. α(T) and b(T) can also be calculated from the second virial coefficient by a scaling rule. Based on the theory, these two temperature-dependent parameters depend only on the repulsive branch of the potential function, and therefore, by our procedure, can be found from ΔHvap and ρfp. The theory has considerable predictive power, since it permits the construction of the p–v–T surface from the heat of vaporization plus the triple-point density. The equation of state is tested for pure, two- and three-component liquid refrigerant mixtures. More... »

PAGES

1547-1555

References to SciGraph publications

  • 1995-11. An analytical equation of state for molten alkali metals in INTERNATIONAL JOURNAL OF THERMOPHYSICS
  • 1993-07. Equation of state for compressed liquids and their mixtures from the cohesive energy density in INTERNATIONAL JOURNAL OF THERMOPHYSICS
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    http://scigraph.springernature.com/pub.10.1023/a:1021401407904

    DOI

    http://dx.doi.org/10.1023/a:1021401407904

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