Optimum design of cryogenic pump for circulation cooling of high temperature superconducting cables

Kenta Tadakuma, Kazuhiro Kajikawa, Yasuharu Kamioka, Atsushi Ishiyama, Shinsaku Imagawa, Taketsune Nakamura, Hirokazu Hirai, Shinsuke Ozaki

研究成果: Contribution to journalConference article

抜粋

Pressure drops and temperature rises caused by the cooling with liquid nitrogen are evaluated for two typical examples of HTS cables. One is the three-in-one-type AC cable located inside a corrugated pipe, and the other is the single-core-type DC cable located inside a straight pipe. The theoretical expressions of pressure drop and temperature rise indicate the contributions from three components such as the friction between the liquid nitrogen and the wetted surfaces, the ratio of the heat input to the mass flow rate of liquid nitrogen and the vertical change of position along the cooling pipe. The numerically estimated results are validated by comparing them with the test results carried out by the other groups. Furthermore, the maximum feeding distance of HTS cable can be determined by adjusting the flow rate of pump if the maximum permissible pressure drop and temperature rise are fixed in advance.

元の言語英語
記事番号012070
ジャーナルJournal of Physics: Conference Series
1293
発行部数1
DOI
出版物ステータス出版済み - 10 15 2019
イベント31st International Symposium on Superconductivity, ISS 2018 - Tsukuba, Ibaraki, 日本
継続期間: 12 12 201812 14 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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  • これを引用

    Tadakuma, K., Kajikawa, K., Kamioka, Y., Ishiyama, A., Imagawa, S., Nakamura, T., Hirai, H., & Ozaki, S. (2019). Optimum design of cryogenic pump for circulation cooling of high temperature superconducting cables. Journal of Physics: Conference Series, 1293(1), [012070]. https://doi.org/10.1088/1742-6596/1293/1/012070