Thermodynamic property representation for the R-32/125 binary system by a new cubic equation of state

H. L. Zhang, H. Sato, K. Watanabe

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Thermodynamic properties of the R-32/125 binary system are modeled by a new cubic equation of state which was developed and applied to the pure R-32 and R-125 in a previous paper by the present authors. The essential thermodynamic properties such as PVTx properties, vapor-liquid equilibrium, enthalpy, entropy, isobaric specific heat, and speed of sound are well represented by the new model simultaneously for the liquid phase, the gas phase, and the two-phase region of the R-32/125 binary system. The developed model is valid for the entire range of compositions, and a pressure-enthalpy diagram for a R-32/125 mixture with 50 mass% of R-32 is illustrated as an example. The new model was also compared with other reported models in refrigeration cycle calculations.

Original languageEnglish
Pages (from-to)441-451
Number of pages11
JournalInternational Journal of Refrigeration
Volume20
Issue number6
Publication statusPublished - 1997

Fingerprint

Thermodynamics
Equations of state
thermodynamics
Thermodynamic properties
Refrigeration
Entropy
enthalpy
Enthalpy
Hot Temperature
Gases
Pressure
specific heat
liquids
Acoustic wave velocity
entropy
refrigeration
vapors
Phase equilibria
Specific heat
gases

Keywords

  • Alternative refrigerant
  • Cubic equation
  • Mixture model
  • R-32/125
  • Thermodynamic properties

ASJC Scopus subject areas

  • Food Science
  • Mechanical Engineering

Cite this

Thermodynamic property representation for the R-32/125 binary system by a new cubic equation of state. / Zhang, H. L.; Sato, H.; Watanabe, K.

In: International Journal of Refrigeration, Vol. 20, No. 6, 1997, p. 441-451.

Research output: Contribution to journalArticle

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