Document IIF

Réfrigérateur magnétique actif rotatif à haute fréquence : résultats expérimentaux et numériques.

Experimental and numerical results of a high frequency rotating active magnetic refrigerator.

Numéro : sect. 3

Auteurs : LOZANO J. A., ENGELBRECHT K., BAHL C. R. H., et al.


Experimental results for a recently developed prototype magnetic refrigeration device at The Technical University of Denmark (DTU) were obtained and compared with numerical simulation results. A continuously rotating active magnetic regenerator (AMR) using 2.8 kg packed sphere regenerators of commercial grade gadolinium (Gd) was employed. With operating frequencies up to 10 Hz and volumetric flow rates up to 600 L/h, the prototype has shown high performance and the results are consistent with predictions from numerical modelling. Magnetocaloric properties of the Gd spheres were obtained experimentally and implemented in a one-dimensional numerical AMR model that includes also the parasitic losses from the prototype. The temperature span for a thermal load of 200 W as a function of frequency was measured and modelled. Moreover, the temperature span dependence on the cooling capacity as a function of cycle frequency was determined. It was found that thermal losses increase as the frequency increases. Therefore, a detailed study of these parasitic losses was carried out experimentally and numerically.

Documents disponibles

Format PDF

Pages : 373-380


  • Prix public

    20 €

  • Prix membre*


* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)


  • Titre original : Experimental and numerical results of a high frequency rotating active magnetic refrigerator.
  • Identifiant de la fiche : 30005576
  • Langues : Anglais
  • Source : 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
  • Date d'édition : 17/09/2012


Voir d'autres communications du même compte rendu (70)
Voir le compte rendu de la conférence