Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment

S. Yoshida; H. Hirai; N. Nara; S. Ozaki; M. Hirokawa; T. Eguchi; H. Hayashi; M. Iwakuma; Y. Shiohara

doi:10.1063/1.4860849

Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment

S. Yoshida, H. Hirai, N. Nara, S. Ozaki, M. Hirokawa, T. Eguchi, H. Hayashi, M. Iwakuma, Y. Shiohara

Applied Energy Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Citations (Scopus)

Abstract

We developed a prototype sub-cooled liquid nitrogen (LN) circulation system for HTS power equipment. The system consists of a neon turbo-Brayton refrigerator with a LN sub-cooler and LN circulation pump unit. The neon refrigerator has more than 2 kW cooling power at 65 K. The LN sub-cooler is a plate-fin type heat exchanger and is installed in a refrigerator cold box. In order to carry out the system performance tests, a dummy cryostat having an electric heater was set instead of a HTS power equipment. Sub-cooled LN is delivered into the sub-cooler by the LN circulation pump and cooled within it. After the sub-cooler, sub-cooled LN goes out from the cold box to the dummy cryostat, and comes back to the pump unit. The system can control an outlet sub-cooled LN temperature by adjusting refrigerator cooling power. The refrigerator cooling power is automatically controlled by the turbo-compressor rotational speed. In the performance tests, we increased an electric heater power from 200 W to 1300 W abruptly. We confirmed the temperature fluctuation was about ±1 K. We show the cryogenic system details and performance test results in this paper.

Original language	English
Title of host publication	Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59
Editors	Susan Breon, Jennifer Marquardt, Thomas Peterson, Michael DiPirro, John Pfotenhauer, Jonathan Demko, James Fesmire, Arkadiy Klebaner, Sidney Yuan, Al Zeller, Peter Kittel, Gregory Nellis, Mark Zagarola
Publisher	American Institute of Physics Inc.
Pages	1246-1253
Number of pages	8
ISBN (Electronic)	9780735412019
DOIs	https://doi.org/10.1063/1.4860849
Publication status	Published - Jan 1 2014
Event	2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2013 - Anchorage, United States Duration: Jun 17 2013 → Jun 21 2013

Publication series

Name	AIP Conference Proceedings
Volume	1573
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2013
Country/Territory	United States
City	Anchorage
Period	6/17/13 → 6/21/13

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1063/1.4860849

Cite this

Yoshida, S., Hirai, H., Nara, N., Ozaki, S., Hirokawa, M., Eguchi, T., Hayashi, H., Iwakuma, M., & Shiohara, Y. (2014). Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment. In S. Breon, J. Marquardt, T. Peterson, M. DiPirro, J. Pfotenhauer, J. Demko, J. Fesmire, A. Klebaner, S. Yuan, A. Zeller, P. Kittel, G. Nellis, & M. Zagarola (Eds.), Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59 (pp. 1246-1253). (AIP Conference Proceedings; Vol. 1573). American Institute of Physics Inc.. https://doi.org/10.1063/1.4860849

Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment. / Yoshida, S.; Hirai, H.; Nara, N. et al.

Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59. ed. / Susan Breon; Jennifer Marquardt; Thomas Peterson; Michael DiPirro; John Pfotenhauer; Jonathan Demko; James Fesmire; Arkadiy Klebaner; Sidney Yuan; Al Zeller; Peter Kittel; Gregory Nellis; Mark Zagarola. American Institute of Physics Inc., 2014. p. 1246-1253 (AIP Conference Proceedings; Vol. 1573).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yoshida, S, Hirai, H, Nara, N, Ozaki, S, Hirokawa, M, Eguchi, T, Hayashi, H, Iwakuma, M & Shiohara, Y 2014, Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment. in S Breon, J Marquardt, T Peterson, M DiPirro, J Pfotenhauer, J Demko, J Fesmire, A Klebaner, S Yuan, A Zeller, P Kittel, G Nellis & M Zagarola (eds), Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59. AIP Conference Proceedings, vol. 1573, American Institute of Physics Inc., pp. 1246-1253, 2013 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2013, Anchorage, United States, 6/17/13. https://doi.org/10.1063/1.4860849

Yoshida S, Hirai H, Nara N, Ozaki S, Hirokawa M, Eguchi T et al. Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment. In Breon S, Marquardt J, Peterson T, DiPirro M, Pfotenhauer J, Demko J, Fesmire J, Klebaner A, Yuan S, Zeller A, Kittel P, Nellis G, Zagarola M, editors, Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59. American Institute of Physics Inc. 2014. p. 1246-1253. (AIP Conference Proceedings). doi: 10.1063/1.4860849

Yoshida, S. ; Hirai, H. ; Nara, N. et al. / Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment. Advances in Cryogenic Engineering - Transactions of the Cryogenic Engineering Conference - CEC, Volume 59. editor / Susan Breon ; Jennifer Marquardt ; Thomas Peterson ; Michael DiPirro ; John Pfotenhauer ; Jonathan Demko ; James Fesmire ; Arkadiy Klebaner ; Sidney Yuan ; Al Zeller ; Peter Kittel ; Gregory Nellis ; Mark Zagarola. American Institute of Physics Inc., 2014. pp. 1246-1253 (AIP Conference Proceedings).

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abstract = "We developed a prototype sub-cooled liquid nitrogen (LN) circulation system for HTS power equipment. The system consists of a neon turbo-Brayton refrigerator with a LN sub-cooler and LN circulation pump unit. The neon refrigerator has more than 2 kW cooling power at 65 K. The LN sub-cooler is a plate-fin type heat exchanger and is installed in a refrigerator cold box. In order to carry out the system performance tests, a dummy cryostat having an electric heater was set instead of a HTS power equipment. Sub-cooled LN is delivered into the sub-cooler by the LN circulation pump and cooled within it. After the sub-cooler, sub-cooled LN goes out from the cold box to the dummy cryostat, and comes back to the pump unit. The system can control an outlet sub-cooled LN temperature by adjusting refrigerator cooling power. The refrigerator cooling power is automatically controlled by the turbo-compressor rotational speed. In the performance tests, we increased an electric heater power from 200 W to 1300 W abruptly. We confirmed the temperature fluctuation was about ±1 K. We show the cryogenic system details and performance test results in this paper.",

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Sub-cooled liquid nitrogen cryogenic system with neon turbo-refrigerator for HTS power equipment

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