Design of a permanent magnetic circuit with air gap in a magnetic refrigerator

We calculate the magnetic field distribution of a permanent magnetic circuit with an air gap in a magnetic refrigerator by a finite-element method, and compare the field strengths of different structural parameters of the magnetic circuit. We show how the structure of the magnetic circuit can be opt...

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Veröffentlicht in:	IEEE transactions on magnetics 2004-05, Vol.40 (3), p.1597-1600
Hauptverfasser:	Tang, Y.B., Chen, Y.G., Teng, B.H., Fu, H., Li, H.X., Tu, M.J.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied classical electromagnetism Cryogenics, refrigerators low-temperature techniques Electromagnetism electron and ion optics Exact sciences and technology Finite element methods Fundamental areas of phenomenology (including applications) Instruments, apparatus, components and techniques common to several branches of physics and astronomy Magnetic circuits Magnetic fields Magnetic materials Magnetism Magnetostatics magnetic shielding, magnetic induction, boundary-value problems Permanent magnets Physics Refrigeration Space technology Structural engineering Superconducting magnets Superconducting materials Thermal instruments, apparatus and techniques
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Beschreibung
Zusammenfassung:	We calculate the magnetic field distribution of a permanent magnetic circuit with an air gap in a magnetic refrigerator by a finite-element method, and compare the field strengths of different structural parameters of the magnetic circuit. We show how the structure of the magnetic circuit can be optimized and present some approaches to improve the structure for a specific magnetic circuit. The main purpose is to provide basic parameters for the design of a practical magnetic refrigerator.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2004.826612