Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Thermal Characteristics of the Vacuum Jacket Valve for Transporting Liquefied Hydrogen According to the Degree of Vacuum

액화수소 수송용 진공자켓 밸브의 진공도에 따른 열적특성에 대한 연구

  • OH, SEUNG JUN (Technical Center for High-Performance Valves, Dong-A University) ;
  • JEON, KYUNG SOOK (Technical Center for High-Performance Valves, Dong-A University) ;
  • YOON, JEONG HWAN (Technical Center for High-Performance Valves, Dong-A University) ;
  • CHOI, JEONGJU (Department of Mechanical Engineering, Dong-A University)
  • 오승준 (동아대학교 고기능성밸브 기술지원센터) ;
  • 전경숙 (동아대학교 고기능성밸브 기술지원센터) ;
  • 윤정환 (동아대학교 고기능성밸브 기술지원센터) ;
  • 최정주 (동아대학교 기계공학과)
  • Received : 2021.11.04
  • Accepted : 2021.11.25
  • Published : 2021.12.30
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Abstract

Liquefied hydrogen have advantage which reduces the volume by about 800 times or more compared to hydrogen gas, so it is possible to increase the storage density. However, liquefied hydrogen produced by cryogenic cooling of 20 K or less at normal pressure has a problem of maximizing the insulation effect that blocks heat introduced from the outside. Representative insulation technologies include vacuum insulation and multi-layer insulation materials and in general, heat blocking is attempted by combining insulation technologies. Therefore, in this study, the pressure of the internal vacuum layer was changed to 10-1, 10-2, 10-3 and 10-4 Torr to confirm the thermal insulation performance of the vacuum jacket valve for transporting liquefied hydrogen. As a result, it was confirmed that the insulation performance improved as the degree of vacuum increased.

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Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었습니다(과제번호 KAIA21TBIP-C158734-02).

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