Share

IIR document

A departure-function approach to calculate thermodynamic properties of refrigerant-oil mixtures.

Author(s) : MARCELINO NETO M. A., BARBOSA J. R. Jr

Type of article: Article, IJR article

Summary

A method based on the theory of departure functions coupled with the Peng and Robinson (1976) equation of state was used to calculate the thermodynamic properties (internal energy, enthalpy, entropy and specific volume) of refrigerant-oil mixtures. The method is exemplified with isobutane (R-600a)/alkyl benzene ISO 5 and isobutane/polyol ester ISO 7 mixtures. Pressure-enthalpy, pressure–volume and temperature–entropy diagrams are presented for overall oil concentrations ranging from 0.1% to 1%. The influence of the oil type on the working fluid properties is discussed. For a given overall oil concentration, the higher solubility of alkyl benzene ISO 5 (in comparison with polyol ester ISO 7) gives rise to larger deviations from the pure refrigerant behavior

Available documents

Format PDF

Pages: 972-979

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: A departure-function approach to calculate thermodynamic properties of refrigerant-oil mixtures.
  • Record ID : 30007958
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 3
  • Publication date: 2013/05

Links


See other articles in this issue (51)
See the source

Indexing