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Étude expérimentale et modélisation de la caractérisation de mélanges d’huiles PAG et POE avec du propane (R-290) et d’huiles POE et AKB avec du tétrafluoroéthane (R-134a). 

Experimental study and modeling of the characterization of mixtures of PAG and POE with propane (R-290) and POE and AKB oil with Tetrafluoroethane (R-134a).

Numéro : 0705

Auteurs : NOTTURNO J., TOBALY P., TREMEAC B.

Résumé

To maintain longevity and efficiency of refrigeration compressors and as new fluids and oils appear on the market, the study of thermodynamic properties of mixtures composed of lubricating oils and refrigerant is essential. In this article, experimental and model tools are presented to characterize the mass fraction, miscibility and viscosity of oil-refrigerant mixtures. Cylindrical cells of 65 cm3 /122 cm3 /475 cm3, equipped with pressure sensors (0 to 60 bars a), thermo-couples (calibrated from -40 °C to +120 °C), viewing windows and a vibrating rod viscometer (from 0 to 100 cPo) are used. Empirical models and models based on the equality of liquid and vapor fugacity at equilibrium based on the Heil activity coefficient are developed. A focus is done on the sensitivity of the oil molar mass in these models on four couples of oil and refrigerant.

Documents disponibles

Format PDF

Pages : 12 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Experimental study and modeling of the characterization of mixtures of PAG and POE with propane (R-290) and POE and AKB oil with Tetrafluoroethane (R-134a).
  • Identifiant de la fiche : 30031646
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Date d'édition : 21/08/2023
  • DOI : http://dx.doi.org/10.18462/iir.icr.2023.0705

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