Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Experimental Investigation on the Freezing Condition of Printed Circuit Heat Exchanger for Cryogenic Liquid Hydrogen Vaporizer

극저온 액체수소 기화기용 인쇄기판 열교환기의 동결 조건에 관한 실험적 연구

  • WOOKYOUNG KIM (Heat Pump Research Center, Research Institute of Carbon-neutral Energy Machinery, Korea Institute of Machinery & Materials) ;
  • BOKYEM KIM (Department of Mechanical Engineering, University of Science and Technology) ;
  • SANGHO SOHN (Heat Pump Research Center, Research Institute of Carbon-neutral Energy Machinery, Korea Institute of Machinery & Materials) ;
  • KONG HOON LEE (Heat Pump Research Center, Research Institute of Carbon-neutral Energy Machinery, Korea Institute of Machinery & Materials) ;
  • JUNGCHUL KIM (Heat Pump Research Center, Research Institute of Carbon-neutral Energy Machinery, Korea Institute of Machinery & Materials)
  • 김우경 (한국기계연구원 탄소중립기계연구소 히트펌프연구센터) ;
  • 김보겸 (과학기술연합대학원대학교 융합기계시스템전공) ;
  • 손상호 (한국기계연구원 탄소중립기계연구소 히트펌프연구센터) ;
  • 이공훈 (한국기계연구원 탄소중립기계연구소 히트펌프연구센터) ;
  • 김정철 (한국기계연구원 탄소중립기계연구소 히트펌프연구센터)
  • Received : 2024.03.25
  • Accepted : 2024.04.24
  • Published : 2024.04.30
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Abstract

The purpose of this study is to investigate the freezing phenomena in printed circuit heat exchanger (PCHE) for cryogenic liquid hydrogen vaporizer. Local freezing phenomena in hot channels should be avoided in designing PCHE for cryogenic liquid hydrogen vaporizer. Hence, the flow and thermal characteristics of PCHE is experimentally investigated to figure out the conditions under when freezing occurs. To conduct lab-scale PCHE experiment, liquid nitrogen is used as a working fluid in cold channels instead of using liquid hydrogen. Glycol water is used as a working fluid in hot channels. Based on the experimental data, ratio between mass flow rates of cold channels and that of hot channels is proposed as contour map to avoid the freezing phenomena in PCHE.

Keywords

Acknowledgement

본 연구는 2023년 산업통상자원부 및 산업기술평가관리원(KEIT) 연구비 지원(1415181949) 한국기계연구원 기본 사업인 '액체수소 공급시스템 핵심 기자재 개발(NK237B)'의 지원으로 연구한 결과물입니다.

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