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Mesure et analyse numérique de la congélation de différentes solutions à l'intérieur d'un petit conteneur.

Measurement and numerical analysis of freezing in solutions enclosed in a small container.

Auteurs : DEVIREDDY R. V., LEO P. H, LOWENGRUB J. S., et al.

Type d'article : Article

Résumé

This study experimentally determined the magnitude and dynamics of latent heat during freezing of 14 different pre-nucleated solute laden aqueous systems. The latent heat of the solutions studied was found to be significantly less than that of pure water. DSC experiments were also performed at 1, 5 and 20 °C/min in five representative cryobiological media to determine the kinetics of ice crystallization. The total magnitude of the latent heat release, L, was found to be independent of the cooling rate. But, at a fixed temperature, the fraction of heat released at higher cooling rates (5 and 20 °C/min) was lower than that at 1 °C/min for all the solutions studied. The authors present a model to predict the experimentally measured behaviour.

Détails

  • Titre original : Measurement and numerical analysis of freezing in solutions enclosed in a small container.
  • Identifiant de la fiche : 2004-0023
  • Langues : Anglais
  • Source : International Journal of Heat and Mass Transfer - vol. 45 - n. 9
  • Date d'édition : 04/2002

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