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Approche cinétique de la modélisation de la cristallisation des coulis de glace à changement de phase.

Ice slurry crystallization based on kinetic phase-change modelling.

Auteurs : CHÉGNIMONHAN V., JOSSET C., PEERHOSSAINI H.

Type d'article : Article, Article de la RIF

Résumé

Most crystallization models for ice slurries are based on the equilibrium thermodynamic approach, an assumption that is not made a priori here. The authors present results of simulations grounded on classical nucleation theory and crystal growth included in global Nakamura-type kinetics coupled with the one-dimensional nonlinear heat equation, another way to model the phase change. The work focuses on ice slurry crystallization using kinetic tools integrating the temperature glide for mixtures (i.e., the solid-liquid equilibrium temperature Tf depends on the residual fluid's solute concentration) without any equilibrium assumption. The heat-transfer phenomena in the experimental device are first determined, and then the parameters of kinetic function of crystallization are identified for pure water samples and then for 15 wt% monopropylene glycol (MPG)-water mixtures. An inverse method is implemented with a genetic algorithm to determine the kinetic parameters.

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Format PDF

Pages : pp. 1559-1568

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    20 €

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Détails

  • Titre original : Ice slurry crystallization based on kinetic phase-change modelling.
  • Identifiant de la fiche : 2010-1905
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 8
  • Date d'édition : 12/2010

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