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Document IIF

Modélisation simplifiée des régénérateurs magnétiques actifs.

Simplified modeling of active magnetic regenerators.

Auteurs : BURDYNY T., ROWE A.

Type d'article : Article, Article de la RIF

Résumé

A simplified model for predicting the general trends of active magnetic regenerator devices is presented. To reduce computational demands it is assumed the regenerator has sufficiently high convective interaction such that a one-phase regenerator approximation is sufficient. A corrective term is subsequently added to the thermal conductivity to account for the convective heat leak. Losses internal and external to the regenerator are also defined for a generalized AMR device. The steady state temperature span across the regenerator is then evaluated using an energy balance and real material properties with the cooling capacity, work inputs and COP post-calculated using the result. A comparison of the simplified model with experimental results was performed using single-layer and multilayer regenerators of Gd, Gd0.74Tb0.26 and Gd0.85Er0.15. The model showed good conformity in magnitude and sensitivity in all of the scenarios which varied by heat load, frequency and utilization.

Documents disponibles

Format PDF

Pages : 932-940

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 : Simplified modeling of active magnetic regenerators.
  • Identifiant de la fiche : 30007938
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 36 - n. 3
  • Date d'édition : 05/2013

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