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タイトル: Numerical analysis of active magnetic regenerators for hydrogen magnetic refrigeration between 20 and 77 K
著者: Matsumoto, Koichi link image link image
Kondo, Takuya
Ikeda, Masakazu
Numazawa, Takenori
松本, 宏一
発行日: 2011年 6月
出版社(者): Elsevier
雑誌名: Cryogenics
ISSN: 0011-2275
巻: 51
号: 6
開始ページ: 353
終了ページ: 357
キーワード: A. Magnetic
B. Hydrogen
E. Magnetic refrigeration
抄録: A model active magnetic regenerator refrigerator (AMR) with the Brayton-like operation cycle was analyzed by numerical cycle simulation in the temperature range between 20 and 77 K. In order to study the performance using magnetic material with various transition temperatures Tc, entropy of magnetic material with second order phase transition was calculated using mean field theory and Debye approximation. The cooling performance is shown to be high when the heat exhaust temperature is close to the transition temperature. It is shown that the optimized operation condition depends on both Tc and operation temperatures. Multi-layered AMR beds were shown to improve the performance of AMR. Multi-stage AMR was also discussed. © 2010.
DOI: 10.1016/j.cryogenics.2010.06.003
URI: http://hdl.handle.net/2297/26242
関連URI: http://www.elsevier.com/locate/issn/00112275
資料種別: Journal Article
版表示: author

このアイテムを引用あるいはリンクする場合は次の識別子を使用してください。 http://hdl.handle.net/2297/26242



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