A 100-W grade closed-cycle thermosyphon cooling system used in HTS rotating machines
A 100-W grade closed-cycle thermosyphon cooling system used in HTS rotating machines
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DOI：
10.1063/1.4706947
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发表时间：
2012-06
期刊：
影响因子：
2.6
通讯作者：
B. Felder;M. Miki;K. Tsuzuki;N. Shinohara;H. Hayakawa;M. Izumi
中科院分区：
文献类型：
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作者：
B. Felder;M. Miki;K. Tsuzuki;N. Shinohara;H. Hayakawa;M. Izumi
用于旋转高温超导（HTS）机器的冷却系统需要足够高的冷却功率，以确保在各种使用状态下的低温。辐射、扭矩管或电流引线代表数百瓦的侵入热量。该架构还必须允许制冷剂旋转。本文提出了一种使用两个吉福德-麦克马洪 (GM) 制冷机的自由对流热虹吸管。制冷剂主要是氖气，但可以添加氦气以增加传热系数。热交换器的设计首先通过有限元热分析进行优化。制造完成后，进行组装进行初步实验，并研究铜件退火的必要性。安装单个蒸发器来评估这种热虹吸管的热性能。还研究了可承受的最大静态热负载，但即使在 150 W 负载下也未达到。最后，该冷却系统在 100 kW 的冷却中进行了测试...
The cooling systems used for rotating High-Temperature Superconducting (HTS) machines need a cooling power high enough to ensure a low temperature during various utilization states. Radiation, torque tube or current leads represent hundreds of watts of invasive heat. The architecture also has to allow the rotation of the refrigerant. In this paper, a free-convection thermosyphon using two Gifford-McMahon (GM) cryocoolers is presented. The cryogen is mainly neon but helium can be added for an increase of the heat transfer coefficient. The design of the heat exchangers was first optimized with FEM thermal analysis. After manufacture, they were assembled for preliminary experiments and the necessity of annealing was studied for the copper parts. A single evaporator was installed to evaluate the thermal properties of such a heat syphon. The maximum bearable static heat load was also investigated, but was not reached even at 150 W of load. Finally, this cooling system was tested in the cooling down of a 100-kW...