Development of conduction-cooled superconducting coils having good processing and high thermal conduction plastic bobbins

开发具有良好加工性和高导热塑料骨架的传导冷却超导线圈

• 批准号: 16560252
• 负责人: TAKAO Tomoaki
• 金额: $ 2.3万
• 依托单位: Sophia University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560252/
• 关键词: Superconducting coil; Stability; Conduction cooling; DFRP; 高温超伝導体; 繊維強化プラスチック; 高温超電導体; ダイニーマ繊維強化プラスチック

Electric resistance of superconducting coils becomes zero at extremely low temperature, and hence cooling method of the coils is immersing in low-temperature liquids such as liquid helium. Another cooling method is conduction cooling by a refrigerator. Because the superconducting coil is cooled only by the conduction from a cold head of the refrigerator, thermal conductivity of structural materials is very important from a viewpoint of stability of the coil.We propose a high thermal conduction plastic as the structural material whose name is a Dyneema fiber reinforce plastic (DFRP). DFRP has a characteristic of thermal expansion with decreasing of temperature. The small superconducting coils with DFRP bobbins were made and cooled by a refrigerator, and the coil stability was measured. The coil having the same specifications that made of aluminum nitride and glass fiber reinforced plastic (GFRP) were also made and stability were measured for the comparison.According to the experimental data, the heat transfer from the winding to the structural material became good in the condition with large coil winding tension, and the DFRP coil stability is similar or better than the AlN coil stability.

超导线圈在极低的温度下电阻为零，因此线圈的冷却方法是浸入液氦等低温液体中。另一种冷却方法是通过冰箱进行传导冷却。由于超导线圈仅通过冰箱冷头的传导来冷却，因此从线圈稳定性的角度来看，结构材料的导热性非常重要。我们提出了一种高导热塑料作为结构材料，其名称为迪尼玛纤维增强塑料 (DFRP)。 DFRP具有随温度降低而热膨胀的特性。制作了带有DFRP骨架的小型超导线圈，并通过冰箱冷却，并测量了线圈的稳定性。还制作了相同规格的氮化铝和玻璃纤维增​​强塑料（GFRP）线圈，并测量了稳定性以进行比较。根据实验数据，从绕组到结构材料的传热良好。在线圈缠绕张力较大的情况下，DFRP线圈的稳定性与AlN线圈的稳定性相似或更好。

项目成果

Heat Drain Effects from HTS Tapes to High Thermal Conduction Plastics for Conduction-cooled Magnets

从高温超导带到传导冷却磁体的高导热塑料的热流失效应

• 发表时间: 2007
• 期刊: IEEE Transactions on Applied Superconductivity 17巻(6月予定)
• 作者: T.Takao;A.Watanabe;T.Takiyama;K.Nakamura;A.Yamanaka
• 通讯作者: A.Yamanaka

伝導冷却Bi2223線と高熱伝導コンポジットの接触における冷却性能評価(その4)

传导冷却 Bi2223 线材与高导热复合材料接触时的冷却性能评估（第 4 部分）

• 发表时间: 2007
• 期刊: 平成19年電気学会全国大会講演論文集 第5分冊
• 作者: 佐久間;滝山;中村;高尾;山中
• 通讯作者: 山中

伝導冷却型マグネット用新機能構造材料の冷却性能評価

传导冷却磁体新型功能结构材料的冷却性能评价

• 发表时间: 2004
• 期刊: 2004年度秋季 低温工学・超伝導学会 講演概要集 71
• 作者: 高尾智明;他
• 通讯作者: 他

Cooling performance evaluation in contact condition of Bi-2223 tape and high-thermal-conduct ion composite (part 3)

Bi-2223胶带与高导热离子复合材料接触条件下的冷却性能评估（第3部分）

• 发表时间: 2007
• 期刊: Technical Meeting on Application of Superconductivity (IEE-Japan) ASC-07-28
• 作者: M.Hashimoto;T.Takiyama;K.Nakamura;T.Takao;A.Yamanaka
• 通讯作者: A.Yamanaka

伝導冷却Bi2223線と高熱伝導コンポジットの接触における冷却性能評価(その3)

传导冷却 Bi2223 线材与高导热复合材料接触时的冷却性能评估（第 3 部分）

• 发表时间: 2007
• 期刊: 電気学会超電導応用電力機器研究会講演資料
• 作者: 橋本;滝山;中村;高尾;山中
• 通讯作者: 山中