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Document IIF

Modélisation de la performance de réfrigérateurs à régénérateurs magnétiques actifs.

Performance modeling of AMR refrigerators.

Auteurs : BURDYNY T., RUEBSAAT-TROTT A., ROWE A.

Type d'article : Article, Article de la RIF

Résumé

A system modeling approach for predicting the performance of active magnetic regenerators using a one-phase approximation is presented. The approach is described for an arbitrary AMR device independent of the magnetic refrigerant, thermal losses or magnetic waveform. A general expression for magnetic work is derived which can be used for cycles where the low-field intensity is not zero. Additionally, a means of treating the varying magnetic field waveform as a single high and low field is described. The model is applied to a permanent magnet magnetic refrigerator using water–glycol as the heat transfer fluid. Simulated results are compared to experimental data which vary by heat load, frequency and utilization. A sensitivity analysis is performed using utilization, adiabatic temperature change, effective conductivity and particle size as independent variables. Comparisons to experimental data show that reducing the calculated magnetocaloric effect by 25% provides good agreement between simulations and experimental results.

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Format PDF

Pages : 51-62

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    20 €

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Détails

  • Titre original : Performance modeling of AMR refrigerators.
  • Identifiant de la fiche : 30009880
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 37 - n. 1
  • Date d'édition : 01/2014

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