Partager

Document IIF

Détermination des points de congélation et d'enthalpie des coulis de glace grâce à un modèle basé sur les valeurs par excès : application au couple eau-éthanol.

Enthalpy and freezing points determination of ice slurries by excess model: application to the water-ethanol pair.

Auteurs : CEZAC P., CASTAING-LASVIGNOTTES J., RENEAUME J. M., et al.

Résumé

Since the fluids traditionally used in refrigeration industries contribute to increase the greenhouse effect, it is thus necessary to replace them and to develop new technologies. The use of ice slurries as secondary refrigerants is one of the most promising alternatives for cold distribution. In order to design cold distribution plants efficiently, it is essential to know how to predict the thermodynamic properties of the mixtures. It is especially vital in order to describe the relations that link temperature, ice fraction and enthalpy. Existing models are based on correlations with numerous parameters. The aim of this paper is to establish a consistent thermodynamic model that requires a minimum of parameters to allow one to represent the freezing point and the enthalpy of ice slurry. An NRTL model based on excess property is proposed in this paper. Comparison with the experimental values of a water ethanol binary mixture shows that the calculated values correspond accurately with experimental data.

Documents disponibles

Format PDF

Pages : ICR07-D2-1291

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 : Enthalpy and freezing points determination of ice slurries by excess model: application to the water-ethanol pair.
  • Identifiant de la fiche : 2008-0228
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

Liens


Voir d'autres communications du même compte rendu (839)
Voir le compte rendu de la conférence

Indexation