Development of a liquid hydrogen transfer pump system with MgB 2 wires

Kazuhiro Kajikawa; Hirotsugu Kuga; Takuro Inoue; Kazuki Watanabe; Yushi Uchida; Taketsune Nakamura; Hiroaki Kobayashi; Motoyuki Hongo; Takayuki Kojima; Hideyuki Taguchi; Yoshihiro Naruo; Tsuyoshi Wakuda; Kazuhide Tanaka

doi:10.1016/j.cryogenics.2012.08.007

Development of a liquid hydrogen transfer pump system with MgB ₂ wires

Kazuhiro Kajikawa, Hirotsugu Kuga, Takuro Inoue, Kazuki Watanabe, Yushi Uchida, Taketsune Nakamura, Hiroaki Kobayashi, Motoyuki Hongo, Takayuki Kojima, Hideyuki Taguchi, Yoshihiro Naruo, Tsuyoshi Wakuda, Kazuhide Tanaka

Superconductive Systems Engineering Laboratory

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

An electric pump composed of an MgB ₂ motor is combined with superconducting level sensors using thin CuNi-sheathed MgB ₂ wires to transfer liquid hydrogen. An impeller is attached to the lower end of a rotating shaft on the MgB ₂ motor and covered with an outer casing to form a centrifugal pump. Then, the MgB ₂ motor and impeller are placed vertically inside a cryostat with an infill of liquid hydrogen. A glass Dewar vessel is prepared to receive the liquid hydrogen transferred from the cryostat containing the MgB ₂ motor. The MgB ₂ sensors are used not only to detect the level of liquid hydrogen but also to control the electric pump on the basis of their pre-estimated calibration curves. By using the assembled pump system, the liquid hydrogen is successfully transferred from the cryostat to the glass Dewar vessel via a transfer tube.

Original language	English
Pages (from-to)	615-619
Number of pages	5
Journal	Cryogenics
Volume	52
Issue number	11
DOIs	https://doi.org/10.1016/j.cryogenics.2012.08.007
Publication status	Published - Nov 2012

All Science Journal Classification (ASJC) codes

Materials Science(all)
Physics and Astronomy(all)

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10.1016/j.cryogenics.2012.08.007

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title = "Development of a liquid hydrogen transfer pump system with MgB 2 wires",

abstract = "An electric pump composed of an MgB 2 motor is combined with superconducting level sensors using thin CuNi-sheathed MgB 2 wires to transfer liquid hydrogen. An impeller is attached to the lower end of a rotating shaft on the MgB 2 motor and covered with an outer casing to form a centrifugal pump. Then, the MgB 2 motor and impeller are placed vertically inside a cryostat with an infill of liquid hydrogen. A glass Dewar vessel is prepared to receive the liquid hydrogen transferred from the cryostat containing the MgB 2 motor. The MgB 2 sensors are used not only to detect the level of liquid hydrogen but also to control the electric pump on the basis of their pre-estimated calibration curves. By using the assembled pump system, the liquid hydrogen is successfully transferred from the cryostat to the glass Dewar vessel via a transfer tube.",

author = "Kazuhiro Kajikawa and Hirotsugu Kuga and Takuro Inoue and Kazuki Watanabe and Yushi Uchida and Taketsune Nakamura and Hiroaki Kobayashi and Motoyuki Hongo and Takayuki Kojima and Hideyuki Taguchi and Yoshihiro Naruo and Tsuyoshi Wakuda and Kazuhide Tanaka",

note = "Funding Information: This work was supported by the Industrial Technology Research Grant Program in 2008 ( 08B38006a ) from the New Energy and Industrial Technology Development Organization (NEDO) of Japan. ",

year = "2012",

month = nov,

doi = "10.1016/j.cryogenics.2012.08.007",

language = "English",

volume = "52",

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journal = "Cryogenics",

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AU - Kajikawa, Kazuhiro

AU - Kuga, Hirotsugu

AU - Inoue, Takuro

AU - Watanabe, Kazuki

AU - Uchida, Yushi

AU - Nakamura, Taketsune

AU - Kobayashi, Hiroaki

AU - Hongo, Motoyuki

AU - Kojima, Takayuki

AU - Taguchi, Hideyuki

AU - Naruo, Yoshihiro

AU - Wakuda, Tsuyoshi

AU - Tanaka, Kazuhide

N1 - Funding Information: This work was supported by the Industrial Technology Research Grant Program in 2008 ( 08B38006a ) from the New Energy and Industrial Technology Development Organization (NEDO) of Japan.

PY - 2012/11

Y1 - 2012/11

N2 - An electric pump composed of an MgB 2 motor is combined with superconducting level sensors using thin CuNi-sheathed MgB 2 wires to transfer liquid hydrogen. An impeller is attached to the lower end of a rotating shaft on the MgB 2 motor and covered with an outer casing to form a centrifugal pump. Then, the MgB 2 motor and impeller are placed vertically inside a cryostat with an infill of liquid hydrogen. A glass Dewar vessel is prepared to receive the liquid hydrogen transferred from the cryostat containing the MgB 2 motor. The MgB 2 sensors are used not only to detect the level of liquid hydrogen but also to control the electric pump on the basis of their pre-estimated calibration curves. By using the assembled pump system, the liquid hydrogen is successfully transferred from the cryostat to the glass Dewar vessel via a transfer tube.

AB - An electric pump composed of an MgB 2 motor is combined with superconducting level sensors using thin CuNi-sheathed MgB 2 wires to transfer liquid hydrogen. An impeller is attached to the lower end of a rotating shaft on the MgB 2 motor and covered with an outer casing to form a centrifugal pump. Then, the MgB 2 motor and impeller are placed vertically inside a cryostat with an infill of liquid hydrogen. A glass Dewar vessel is prepared to receive the liquid hydrogen transferred from the cryostat containing the MgB 2 motor. The MgB 2 sensors are used not only to detect the level of liquid hydrogen but also to control the electric pump on the basis of their pre-estimated calibration curves. By using the assembled pump system, the liquid hydrogen is successfully transferred from the cryostat to the glass Dewar vessel via a transfer tube.

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ER -

Development of a liquid hydrogen transfer pump system with MgB ₂ wires

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