Design and performance of a permanent-magnet rotary refrigerator
Design and performance of a permanent-magnet rotary refrigerator
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DOI：
10.1016/j.ijrefrig.2006.07.014
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发表时间：
2006-12-01
期刊：
影响因子：
--
通讯作者：
Fukamichi, K.
中科院分区：
文献类型：
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作者：
Zimm, C.;Boeder, A.;Fukamichi, K.
为了证明磁制冷在接近室温时提供有用冷却的潜力，美国宇航公司于 2001 年建造了一台旋转磁制冷机 (RMR)。RMR 使用主动磁再生器 (AMR) 循环和含水传热流体。所需的磁场变化是通过装有磁热材料多孔床的轮子通过带有钢通量集中极的 1.5 T Nd2Fe14B 永磁体的旋转来产生的。安装在轮上的泵和阀门控制流经磁热床和热交换器的传热流体。这种旋转设计可在一定频率（0.5-4 Hz）、传热流体流量和冷却功率范围内安静、可靠地运行。报告并分析了使用 Gd 和 Gd 合金球形颗粒的器件的性能。我们还描述了引入层状床和具有一级磁转变的 La(Fe1-xSix)(13)H-y 合金的性能影响。 (c) 2006 Elsevier Ltd 和 IIR。版权所有。
In order to demonstrate the potential of magnetic refrigeration to provide useful cooling near room temperature, Astronautics Corporation of America constructed a rotary magnetic refrigerator (RMR) in 2001. The RMR uses the active magnetic regenerator (AMR) cycle with an aqueous heat transfer fluid. The required change in magnetic field is produced by the rotation of a wheel packed with porous beds of magnetocaloric material through a 1.5 T Nd2Fe14B permanent magnet with steel flux concentration poles. A pump, and valves mounted to the wheel, control heat transfer fluid flow through the magnetocaloric beds and heat exchangers. This rotary design allows quiet, reliable operation over a range of frequencies (0.5-4 Hz), heat transfer fluid flow rates and cooling power. The performance of the device using Gd and Gd alloy spherical particles is reported and analyzed. We also describe the performance effects of introducing layered beds and an La(Fe1-xSix)(13)H-y alloy with a first order magnetic transition. (c) 2006 Elsevier Ltd and IIR. All rights reserved.