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Impact de la solubilité de l'huile sur les performances d'évaporation avec le R-290 pour frigorigène.

Oil solubility effect on evaporation performance with R290 as refrigerant.

Auteurs : SUN Y., WANG X., WANG S.

Type d'article : Article de la RIF

Résumé

The increasing awareness of the environmental impact of traditional refrigerants (such as R-404A, R-407C, R-134A, etc.) makes the demand for alternatives more urgent. Natural refrigerant propane (R-290) has a similar cooling capacity to R-22, that is attracting a great deal of attention in RAC. Toward better understanding of oil-presence effect on the evaporator performance working with R-290, the absorption behavior of R-290 in three kinds of oils (PAG 68, POE 75, PVE 68) were measured from 283.15 to 343.15 K using an isochoric saturation method. From the calculated results, the NRTL model could successfully represent the solubility of R-290/oil mixtures. Upon the experimental data, new pressure-enthalpy-vapor quality (p-h-X) diagrams were given for pure R-290 and R-290/oil blends. Isotherms of R-290/oil mixtures were divided into two regions, that is mainly related to solubility and oil circulation mass ratio. Oil-present impact on enthalpy changes in the evaporator, as well as the non-evaporation quality of R-290 at the evaporator outlet, were investigated. There is a positive correlation between enthalpy change rate and superheat, and an obviously negative correlation between enthalpy change rate and oil circulation mass fraction. Non-evaporation quality decreases with increasing superheat and increases with increasing oil circulation mass fraction.

Documents disponibles

Format PDF

Pages : 200-207

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 : Oil solubility effect on evaporation performance with R290 as refrigerant.
  • Identifiant de la fiche : 30031898
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 151
  • Date d'édition : 07/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2023.04.007

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