Temperature characteristic of rotor of HTS synchronous rotating machine cooled by solid nitrogen

This paper deals with cryogen, which is used as solid nitrogen (SN 2) to keep the operating temperature of high temperature superconducting (HTS) synchronous rotating machine. To solidify liquid nitrogen, liquid helium (LHe) passed into the heat exchanger and cools its own temperature. Two types of...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2002-08, Vol.372, p.1535-1538
Main Authors: Jo, Young-Sik, Kwon, Young-Kil, Sohn, Myung-Hwan, Ryu, Kang-Sik, Hong, Jung-Pyo, Lee, Ju
Format: Article
Language:English
Subjects:
Cryogen
HTS rotating machine
Solid nitrogen
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Summary:This paper deals with cryogen, which is used as solid nitrogen (SN 2) to keep the operating temperature of high temperature superconducting (HTS) synchronous rotating machine. To solidify liquid nitrogen, liquid helium (LHe) passed into the heat exchanger and cools its own temperature. Two types of heat exchangers were designed and fabricated for making the SN 2, and the temperature characteristics of both case was compared. The rotor of HTS synchronous rotating machine was cooled by latent heat of SN 2 and it was kept under 40 K for 2 h and 30 min without the additional supplement of LHe.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(02)01077-8