Development of Bi-2223 Model Magnet for Magnetic Refrigeration System

被引：1
|
作者：
Nishijima, Gen [1 ]
Amaya, Munenori [1 ]
Nishimura, Takashi [2 ]
Kamiya, Koji [1 ]
Numazawa, Takenori [1 ]
机构：
[1] Natl Inst Mat Sci NIMS, Tsukuba 3050003, Japan
[2] Sumitomo Elect Ind Ltd, Osaka 5540024, Japan
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2023年 / 33卷 / 05期
关键词：
Superconducting magnets; Superconducting magnetic energy storage; Coils; Magnetic separation; Magnetomechanical effects; Refrigeration; High-temperature superconductors; Bi-2223; magnetic refrigeration; Index Terms; superconducting magnet; DESIGN;
D O I：
10.1109/TASC.2023.3265907
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：
We have started the development of a magnetic refrigeration system for hydrogen liquefaction. This system comprises a superconducting magnet, wherein an active magnetic regenerative (AMR) bed moves through. To investigate its applicability to the magnetic refrigeration system, a Bi-2223 superconducting magnet with compensation coils at both ends was designed and fabricated. The magnet was designed to generate 4.76 T at a rated current of 300 A. Compensation coils at both ends reduce the magnetic field outside the bore to zero. The magnet was fabricated as a stack of epoxy-impregnated double-pancake coils. The cooldown period of the magnet was approximately 82 hours. However, the quench detector ceased the power supply at 229 A (3.63 T), due to voltage oscillations in the coils, likely arising from compression due to the magnetic repulsive force.
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页数：5
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