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A rigorous calculation of the critical point from the fundamental equation of state for the water + ammonia mixture.

Author(s) : AKASAKA R.

Type of article: Article, IJR article

Summary

The critical point of the water + ammonia mixture was calculated directly from the Helmholtz free energy formulation. The calculation was performed according to the critical point criteria expressed in terms of the derivatives of the Helmholtz free energy with respect to mole numbers. Smooth critical locus linking between the critical points of pure water and ammonia was obtained. The critical locus showed a good agreement with the most reliable experimental data. Simple correlations for the critical temperature, pressure, and molar volume for a given composition were developed. The information obtained in this study is helpful for design and simulation of the cycles using the water + ammonia mixture as working fluid.

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Pages: 95-101

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Details

  • Original title: A rigorous calculation of the critical point from the fundamental equation of state for the water + ammonia mixture.
  • Record ID : 2009-0149
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 1
  • Publication date: 2009/01

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