A magnet-based device for active magnetic regenerative refrigeration

Author

Clot, P. ; Viallet, D. ; Allab, F. ; Kedous-Lebouc, A. ; Fournier, J.M. ; Yonnet, J.P.

Author_Institution

Lab. d´´Electrotech. de Grenoble, CNRS, St. Martin d´´Heres, France

Volume

39

Issue

5

fYear

2003

Firstpage

3349

Lastpage

3351

Abstract

To study magnetic refrigeration an experimental device is developed. It uses gadolinium as a giant magnetocaloric effect material and a Halbach magnet cylinder as the magnetization source. A specific thermodynamic cycle, active magnetic regenerative refrigeration, is required to enhance the temperature span. The system is simple and compact. The first results obtained (ΔT=4°C or 7°C, COP=2) are promising and confirm the model developed. It can be used already to evaluate the potential of different magnetocaloric effect materials and the efficiency of different active magnetic regenerative refrigeration cycles.

Keywords

ferromagnetic materials; gadolinium; magnetocaloric effects; permanent magnet machines; permanent magnets; refrigeration; Gd; Halbach magnet cylinder; active magnetic regenerative refrigeration; giant magnetocaloric effect material; magnet-based device; magnetization source; specific thermodynamic cycle; Magnetic devices; Magnetic materials; Magnetic separation; Magnetization; Permanent magnets; Refrigeration; Superconducting magnets; System testing; Temperature; Thermodynamics;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.816253

Filename

1233394