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Caractéristiques de performance des cycles frigorifiques de Brayton magnétiques utilisant le Gd, le Gd0,74Tb0,26 et le (Gd3,5Tb1,5)Si4 comme substance active.

Performance characteristics of magnetic Brayton refrigeration cycles using Gd, Gd0.74Tb0.26 and (Gd3.5Tb1.5)Si4 as the working substance.

Auteurs : DIGUET G., LIN G., CHEN J.

Type d'article : Article, Article de la RIF

Résumé

Based on the experimental characteristics of the iso-field heat capacity changing with temperature for the room-temperature magnetic refrigeration materials Gd, Gd0.74Tb0.26, and (Gd3.5Tb1.5)Si4, the corresponding entropy versus temperature curves are calculated and presented, the regenerative magnetic Brayton refrigeration cycles, using these magnetic materials as the working substances, are established. The non-perfect regenerative heat quantity, net cooling quantity, released heat quantity, COP and other performance parameters of these magnetic Brayton refrigeration cycles are analyzed and calculated. Furthermore, the performance characteristics of the Brayton refrigeration cycles employing Gd, Gd0.74Tb0.26, and (Gd3.5Tb1.5)Si4 as the working substance are evaluated and compared, the influence of non-perfect regenerative heat on the performance characteristics of these magnetic Brayton refrigeration cycles is revealed.

Documents disponibles

Format PDF

Pages : 1035-1042

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 : Performance characteristics of magnetic Brayton refrigeration cycles using Gd, Gd0.74Tb0.26 and (Gd3.5Tb1.5)Si4 as the working substance.
  • Identifiant de la fiche : 30004124
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 35 - n. 4
  • Date d'édition : 06/2012

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