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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Prediction of a Leakage in a Liquid Hydrogen Pump Using a Finite Element Method

유한요소 해석을 이용한 액화수소 펌프 누설량 예측

  • HYUNSE KIM (Innovative Energy Machinery Research Division, KIMM Institute of Carbon Neutral Energy Machinery, Korea Institute of Machinery & Materials) ;
  • YOUNG-BOG HAM (Innovative Energy Machinery Research Division, KIMM Institute of Carbon Neutral Energy Machinery, Korea Institute of Machinery & Materials)
  • 김현세 (한국기계연구원 탄소중립기계연구소 고효율에너지기계연구부) ;
  • 함영복 (한국기계연구원 탄소중립기계연구소 고효율에너지기계연구부)
  • Received : 2023.02.23
  • Accepted : 2023.06.02
  • Published : 2023.06.30
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Abstract

Until recently, ships, automobiles, and drones using hydrogen energy are being actively researched. In addition, stations and facilities for hydrogen supply are being developed widely. Among them, a hydrogen pump is necessary for compressing it and transfer to other stations. The liquid hydrogen pump is operated at very high pressure up to 90 MPa. In our research, a reciprocating plunger pump is studied. Especially, a leakage in a liquid hydrogen pump is predicted using a finite element method. As a result, it was found that leak mass flow rates changed from 0.09 to 2.20 kg/h, when the gaps were given from 2 to 6 ㎛. Thus pump efficiencies were calculated from 99.9 to 97.9%, when the gaps changed from 2 to 6 ㎛. These results are useful for the design of the liquid hydrogen pump.

Keywords

Acknowledgement

본 연구는 산업통상자원부 산하 한국에너지기술평가원의 지원을 받아 수행된 연구임(과제번호: 20203010040020, 제목: 액화수소 충전소용 100 kg/h, 90 MPa급 극저온 왕복동 펌프 개발).

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