IMPROVEMENT OF ROOM TEMPERATURE MAGNETIC REFRIGERATOR USING AIR AS HEAT TRANSFER FLUID

被引：0
|
作者：
Nakamura, Ko [1 ]
Kawanami, Tsuyoshi [2 ]
Hirano, Shigeki [3 ]
Ikegawa, Masahiro [1 ]
Fumoto, Koji [4 ]
机构：
[1] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido, Japan
[2] Kobe Univ, Grad Sch Engn, Kobe, Hyogo, Japan
[3] Hokkaido Ind Res Inst, Dept Environm Engn, Sapporo, Hokkaido, Japan
[4] Kushiro Natl Coll Technol, Dept Mech Engn, Kushiro, Japan
来源：
2008 SECOND INTERNATIONAL CONFERENCE ON THERMAL ISSUES IN EMERGING TECHNOLOGIES - THEORY AND APPLICATION (THETA) | 2008年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In order to elucidate the cooling characteristics and to improve the cooling performance of a room temperature magnetic refrigerator using air as a heat transfer fluid, experimental and analytical study concerned with the heat transfer characteristics of an active magnetic regenerator (AMR) are conducted The basic components of the target system are a magnetic circuit, a test section, a fluid supplying system and an associated instrumentation. Spherical gadolinium particles are packed in the test section as a magnetic working substance. Temperature profiles under several operating conditions for the Air-AMR are measured and calculated Also, those for the Water-AMR are investigated in order to compare with the Air-AMR. The results show that the AMR cycle is very effective for improvement of the cooling performance of a room-temperature magnetic refrigerator for both heat transfer fluids, because increase in the temperature span between the hot-end and the cold-end due to regeneration is realized. Furthermore, it is revealed that a high flow rate of air is necessary in order to improve the cooling performance of the Air-AMR refrigerator, compared with the case of the Water-AMR. It is also shown that thermophysical properties of the heat transfer fluid have a significant effect on the cooling characteristics Of an AMR refrigerator.
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页码：267 / +
页数：2
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