Design and Instrumentation of an Advanced Magnetocaloric Direct Temperature Measurement System

The magnetocaloric temperature change (ΔT Temp ) is an important factor in the performance evaluation of the magnetocaloric material's magnetocaloric effect (MCE), which has been attracting significant interest due to its application in energy efficient near-room temperature magnetic refrigerat...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-11, Vol.48 (11), p.3999-4002
Main Authors: Ghahremani, Mohammadreza, Jin, Yi, Bennett, Lawrence H., Torre, Edward Della, ElBidweihy, Hatem, Gu, Shuo
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Electron tubes
Exact sciences and technology
Gadolinium
magnetic refrigeration
Magnetism
magnetocaloric effect (MCE)
magnetocaloric temperature and MCE rate
Magnetometers
Materials science
Other topics in materials science
Physics
Temperature control
Temperature distribution
Temperature effects
Temperature measurement
Temperature sensors
Test systems
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Summary:The magnetocaloric temperature change (ΔT Temp ) is an important factor in the performance evaluation of the magnetocaloric material's magnetocaloric effect (MCE), which has been attracting significant interest due to its application in energy efficient near-room temperature magnetic refrigeration technology with environmentally desirable characteristics. A novel magnetocaloric temperature change test system with fully controlled field, temperature, and time capabilities is designed and analyzed. This test system allows the detailed observations of the applied field effect, sample temperature effect, and time effect on the testing magnetocaloric material. The effectiveness of this test system was evaluated by testing the MCE within sample of Gd turnings. The magnetocaloric temperature change measurements, T Temp , at various H and Temp was measured and showed numerical and characteristic agreements with literature, thus provided evidence that this test is capable of making conventional measurement as well as new measurements on the material's dynamic time effects.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2012.2203108