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Amélioration des performances de solidification d'un système de stockage de glace encapsulé par des ailettes et de la mousse de cuivre.

Solidification performance enhancement of encapsulated ice storage system by fins and copper foam.

Auteurs : WANG H., XIANG H.

Type d'article : Article de la RIF

Résumé

It is critical for the encapsulated ice storage system to maintain high cooling capacity within permissible time. In this paper, the strengthening effects of metal foam and fins on ice storage spheres are numerically studied comprehensively. The variations of the temperature field, ice front evolution, solidification fraction, total solidification time and the cold storage capacity are analyzed under four different strengthening configurations (plain, fins, metal foam and metal foam composite fins). The optimum porosity is obtained after the comparison of four comprehensive criteria about the input-output performance. Finally, the dimensionless parameters of the metal foam ice storage sphere are analyzed. The results demonstrate that the temperature distribution in the metal foam ice storage sphere is more uniform, and the solidification rate is faster due to coupled effects of thermal conduction enhancement and the suppression of the natural convection. Metal foam composite fins can remarkably save 83.5% of the solidification time and enhance the solidification rate by 6.1 times compared with the non-enhancement case. Dimensional analysis of the results is presented as the solidification fractions versus an appropriate combination of the porosity, Fourier, and Stefan numbers. Compared with the previous non-metal foam prediction formula, the formula reported in this research is more accurate. The prediction accuracy can improve by 20%.

Documents disponibles

Format PDF

Pages : 293-303

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Solidification performance enhancement of encapsulated ice storage system by fins and copper foam.
  • Identifiant de la fiche : 30029355
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 134
  • Date d'édition : 02/2022
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2021.11.027
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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