Optimization of a magnetic refrigerator at room temperature for air cooling systems.
Optimization of a magnetic refrigerator at room temperature for air cooling systems.
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DOI：
10.1016/j.ijrefrig.2006.07.018
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发表时间：
2006-12
期刊：
影响因子：
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通讯作者：
T. Kawanami;K. Chiba;Kohei Sakurai;M. Ikegawa
中科院分区：
文献类型：
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作者：
T. Kawanami;K. Chiba;Kohei Sakurai;M. Ikegawa
本研究的目的是了解磁制冷机在室温下直接风冷的最佳运行条件。目标系统的基本组成部分是一个磁路，包括两个永磁体、一个测试部分、一个鼓风机和一个相关的仪器。测试部分由10个测试单元组成，这些测试单元以规定的填充率将钆片作为磁性工作物质包裹起来。为了使外加磁场从0变为0.9T，磁路安装在产生往复运动的电动滑块上。在不同的条件下，如空气的体积流速、磁性工质的填料长度和热交换循环，对系统的性能进行了广泛的实验和分析研究。结果表明，在适当的工作条件下，磁性制冷机具有最大的冷却速率。
The purpose of this study is to understand the optimum operating condition of magnetic refrigerator at room temperature for direct air-cooling. The basic components of the target system are a magnetic circuit including two permanent magnets, a test section, an air blower, and an associated instrumentation. The test section consists of 10 test cells which enclose gadolinium chips as a magnetic working substance in a prescribed packing rate. In order to change the applied magnetic field from 0 to 0.9T, the magnetic circuit is installed on an electric slider which generates reciprocating motion. The system performances are widely investigated both experimentally and analytically for the variety of conditions such as a volumetric flow rate of air, a packing length of magnetic working substance, and a heat exchange cycle. The results reveal that the present magnetic refrigerator has a maximum value of the cooling rate in an appropriate operating condition.