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Document IIF

Améliorations d'un réfrigérateur magnétique à température ambiante combiné avec un effet frigorifique à cycle de Stirling.

Improvements of a room-temperature magnetic refrigerator combined with Stirling cycle refrigeration effect.

Auteurs : GAO X. Q., SHEN J., HE X. N., et al.

Type d'article : Article, Article de la RIF

Résumé

A high pressure hybrid refrigerator that combines the active magnetic refrigeration effect with the Stirling cycle refrigeration effect at room temperature is studied here. In the apparatus, a helium-gas-filled alfa-type Stirling refrigerator uses Gd sheets as the regenerator and the regenerator is put in a magnetic field varying from 0 to 1.4 T, which is provided by a Halbach-type rotary permanent magnet assembly. With an operating pressure of 5.5?MPa and a frequency of 2.5?Hz, a no-load temperature of 273.8?K was reached in 9 minutes, which is lower than that of 277.6?K for pure Stirling cycle. For the hybrid operation, cooling powers of 40.3 W and 56.4 W were achieved over temperature spans of 15?K and 12?K, respectively. For the latter case, the cooling power improves by 28.5% if compared with that exploiting only the Stirling cycle refrigeration effect.

Documents disponibles

Format PDF

Pages : 330-335

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 : Improvements of a room-temperature magnetic refrigerator combined with Stirling cycle refrigeration effect.
  • Identifiant de la fiche : 30017781
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 67
  • Date d'édition : 07/2016

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