Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Development of Numerical Analysis Model on Cryogenic Vessel for Safety Pressure Maintenance and Control of Liquid Hydrogen BOG

액체 수소 BOG 안전 압력 유지 및 제어를 위한 극저온 용기의 수치 해석 모델 개발

  • YOUNG MIN SEO (Hydrogen Electric Research Team, Electric Mobility Research Division, Korea Electrotechnology Research Institute) ;
  • HYUN WOO NOH (Hydrogen Electric Research Team, Electric Mobility Research Division, Korea Electrotechnology Research Institute) ;
  • TAE HYUNG KOO (Hydrogen Electric Research Team, Electric Mobility Research Division, Korea Electrotechnology Research Institute) ;
  • DONG WOO HA (Hydrogen Electric Research Team, Electric Mobility Research Division, Korea Electrotechnology Research Institute) ;
  • ROCK KIL KO (Hydrogen Electric Research Team, Electric Mobility Research Division, Korea Electrotechnology Research Institute)
  • 서영민 (한국전기연구원 전기모빌리티연구단 수소전기연구팀) ;
  • 노현우 (한국전기연구원 전기모빌리티연구단 수소전기연구팀) ;
  • 구태형 (한국전기연구원 전기모빌리티연구단 수소전기연구팀) ;
  • 하동우 (한국전기연구원 전기모빌리티연구단 수소전기연구팀) ;
  • 고락길 (한국전기연구원 전기모빌리티연구단 수소전기연구팀)
  • Received : 2024.04.25
  • Accepted : 2024.05.22
  • Published : 2024.06.30
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Abstract

In this study, a cryogenic vessel was constructed to maintain and control the safe pressure of liquid hydrogen boil-off gas (BOG), and the numerical analysis was conducted on the development of computational fluid dynamics model inside the high-pressure vessel. An evaluation system was constructed using cryogenic inner and outer containers, pre-cooler, upper flange, and internal high-pressure container. We attempted to analyze the performance of the safety valve by injecting relatively high temperature hydrogen gas to generate BOG gas and quickly control the pressure of the high-pressure vessel up to 10 bar. As a results, the liquid volume fraction decreased with a rapid evaporation, and the pressure distribution increased monotonically inside a high pressure vessel. Additionally, it was found that the time to reach 10 bar was greatly affected by the filling rate of liquid hydrogen.

Keywords

Acknowledgement

이 연구는 2024년도 정부(과학기술정보통신부)의 재원으로 국가과학기술연구회의 지원을 받아 수행된 한국전기연구원 기본 사업임(No. 24A01070). 이 연구는 2024년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임 (24A02089, 액체수소 운송을 위한 3,000 kg 용량 탱크 트레일러 개발 및 실증).

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