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Etude expérimentale sur la stabilité thermique de plusieurs nouveaux frigorigènes sans impact nocif sur l'ozone stratosphérique.

A predictive density model in a corresponding states format: application to pure and mixed refrigerants.

Auteurs : SCALABRIN G., GRIGIANTE M., CRISTOFOLI G., et al.

Type d'article : Article, Article de la RIF

Résumé

A three parameters density model based on Corresponding States (CS) technique is proposed as a means of predicting the density of pure fluids and their mixtures on the entire PT (PTx) surface. The studied fluids belong to two conformal families of the new refrigerant fluids generation: the halogenated alkanes (HA) and the hydrofluoroethers (HFE). The new model is based on an original scaling factor parameter that is determined only on a saturated liquid density experimental value. Using two accurate dedicated equations of state (EoS) as references, the same structure of the Teja CS model is maintained, substituting the classical acentric factor with the new defined scaling parameter. Through this model, the density of the refrigerant fluids considered can be calculated on the whole surface with an accuracy level similar to that of the dedicated equations. The model is validated against experimental data for HFC refrigerants including fluoropropanes, fluorobutanes and fluoroethers. A comparison is also proposed with available density models regarded of high accuracy level.

Documents disponibles

Format PDF

Pages : 35-50

Disponible

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    20 €

  • Prix membre*

    Gratuit

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Détails

  • Titre original : A predictive density model in a corresponding states format: application to pure and mixed refrigerants.
  • Identifiant de la fiche : 2003-1672
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 26 - n. 1
  • Date d'édition : 01/2003

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