Development of a Cryogenic Helium-Neon Gas Mixture Cooling System for Use in a Gd-Bulk HTS Synchronous Motor
Development of a Cryogenic Helium-Neon Gas Mixture Cooling System for Use in a Gd-Bulk HTS Synchronous Motor
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DOI：
10.1109/tasc.2010.2101573
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发表时间：
2011-01
影响因子：
1.8
通讯作者：
B. Felder;M. Miki;Z. Deng;K. Tsuzuki;N. Shinohara;M. Izumi;H. Hayakawa
中科院分区：
文献类型：
--
作者：
B. Felder;M. Miki;Z. Deng;K. Tsuzuki;N. Shinohara;M. Izumi;H. Hayakawa
应用于旋转电机的高温超导体（HTS）需要高效的冷却系统。提高高温超导磁体的最大俘获磁通密度和缩短整体冷却时间是必要的。在本文中，我们添加了一个气态氦相的冷凝氖闭式循环热虹吸管。气膜冷却的潜热与氦的高导热性相结合。不同的混合比例进行了评估，在电阻可变热负荷。增加氦气量可以减小蒸发器的温度变化。然后将混合物用于冷却30 kW级钆体高温超导同步电机。转子的八个大块HTS导体在不到六小时内冷却到40 K。这种热虹吸器的应用设想用于较大的旋转机器。
Temperature Superconductors (HTS) applied to rotating machines require an efficient cooling system. It is necessary to increase the maximum trapped flux density in the bulk HTS magnets and decrease the overall cooling time. In this paper, we added a gaseous helium phase to a condensed-neon closed-cycle thermosyphon. The latent heat of neon-film cooling is combined with helium's high thermal conductivity. Different mixture proportions were evaluated in terms of resistance to variable heat loads. More helium decreased the temperature variation of the evaporator. The mixture was then used to cool down a 30 kW-grade gadolinium-bulk HTS synchronous motor. The eight bulk HTS conductors of the rotor were cooled to 40 K in less than six hours. The application of this thermosyphon is envisioned for larger rotating machines.