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

  • 제32권6호
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  • Pages.565-572
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  • 2021
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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장주기/대용량 저장을 위한 액체/고체(Slush) 수소 생산 장치의 해외기술 동향분석

Technical Review on Liquid/Solid (Slush) Hydrogen Production Unit for Long-Term and Bulk storage

  • 이창형 (고등기술연구원 플랜트엔지니어링센터) ;
  • 류주열 (고등기술연구원 플랜트엔지니어링센터) ;
  • 손근 (고등기술연구원 플랜트엔지니어링센터) ;
  • 박성호 (고등기술연구원 플랜트엔지니어링센터)
  • LEE, CHANGHYEONG (Institute for Advanced Engineering(IAE), Plant Engineering Center) ;
  • RYU, JUYEOL (Institute for Advanced Engineering(IAE), Plant Engineering Center) ;
  • SOHN, GEUN (Institute for Advanced Engineering(IAE), Plant Engineering Center) ;
  • PARK, SUNGHO (Institute for Advanced Engineering(IAE), Plant Engineering Center)
  • 투고 : 2021.09.17
  • 심사 : 2021.11.19
  • 발행 : 2021.12.30
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초록

Hydrogen is currently produced from natural gas reforming or industrial process of by-product over than 90%. Additionally, there are green hydrogens based on renewable energy generation, but the import of green hydrogen from other countries is being considered due to the output variability depending on the weather and climate. Due to low density of hydrogen, it is difficult to storage and import hydrogen of large capacity. For improving low density issue of hydrogen, the gaseous hydrogen is liquefied and stored in cryogenic tank. Density of hydrogen increase from 0.081 kg/m3 to 71 kg/m3 when gaseous hydrogen transfer to liquid hydrogen. Density of liquid hydrogen is higher about 800 times than gaseous. However, since density and boiling point of liquid hydrogen is too lower than liquefied natural gas approximately 1/6 and 90 K, to store liquid hydrogen for long-term is very difficult too. To overcome this weakness, this paper introduces storage method of hydrogen based on liquid/solid (slush) and facilities for producing slush hydrogen to improve low density issue of hydrogen. Slush hydrogen is higher density and heat capacity than liquid hydrogen, can be expected to improve these issues.

키워드

과제정보

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었습니다(과제번호: 21CTAP-C163636-01).

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