Room-temperature magnetic refrigerator using permanent magnets

X. Bohigas*, E. Molins, A. Roig, J. Tejada, Xixiang Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

A magnetic refrigerator device based on adiabatic magnetic refrigeration is described. The magnetic material is cyclically magnetized and demagnetized by permanent magnets in an adiabatic process. A temperature difference of 1.6 K between the hot and cold regions was obtained under a low magnetic field (0.3 T). Gadolinium was the magnetic material used in experiments at room temperature. The range of working temperatures is between 70 and 300 K for a variety of active magnetic materials. The optimized experimental setup increased the device efficiency by achieving a temperature difference between hot and cold sources up to 5 K.

Original languageEnglish (US)
Pages (from-to)538-544
Number of pages7
JournalIEEE Transactions on Magnetics
Volume36
Issue number3
DOIs
StatePublished - May 1 2000

Keywords

  • Magnetic refrigerator
  • Magnetocaloric effect

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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