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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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An Economic Analysis on Slush Hydrogen Containing Liquid and Solid Phase for Long-Term and Large-Scale Storage

장주기/대용량 수소저장을 위한 액체/고체기반 Slush 수소의 저장 비용 분석

  • PARK, SUNGHO (Energy & Environment IT Group, Plant Engineering Center, Institute for Advanced Engineering (IAE)) ;
  • LEE, CHANGHYEONG (Energy & Environment IT Group, Plant Engineering Center, Institute for Advanced Engineering (IAE)) ;
  • RYU, JUYEOL (Energy & Environment IT Group, Plant Engineering Center, Institute for Advanced Engineering (IAE)) ;
  • HWANG, SEONGHYEON (Energy & Environment IT Group, Plant Engineering Center, Institute for Advanced Engineering (IAE))
  • 박성호 (고등기술연구원 플랜트엔지니어링센터 에너지환경 IT융합 그룹) ;
  • 이창형 (고등기술연구원 플랜트엔지니어링센터 에너지환경 IT융합 그룹) ;
  • 류주열 (고등기술연구원 플랜트엔지니어링센터 에너지환경 IT융합 그룹) ;
  • 황성현 (고등기술연구원 플랜트엔지니어링센터 에너지환경 IT융합 그룹)
  • Received : 2022.04.18
  • Accepted : 2022.06.07
  • Published : 2022.06.30
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Abstract

Slush hydrogen containing liquid and solid hydrogen is expected to achieve zero boil-off by suppressing boil-off gas because heat of fusion for solid absorbe the heat ingress from atmosphere. In this paper, quantitative analysis on storage cost considering specific energy consumption between 1,000 m3 class liquid hydrogen storage system with re-liquefaction and slush hydrogen storage system during equivalent zero boil off period. Even though approximately 50% of total storage capacity should be converted into solid phase during the initial cargo bunkering, total energy consumption to convert into slush hydrogen is relatively 25% less than re-liquefaction energy for boil off hydrogen during zero boil off period. That's because energy consumption of slush phase change take up only 1.8% of liquefaction energy. moreover, annual revenue requirement including CAPEX, OPEX and electric cost for slush hydrogen storage could be more reduced approximately 32.5% than those of liquid hydrogen storage and specific energy storage cost ($/kg-H2) could also be lowered by about 41.7% compared with liquid hydrogen storage.

Keywords

Acknowledgement

본 연구는 국토교통부/국토교통과학기술진흥원의 지원으로 수행되었다(과제번호 22CTAP-C163636-01).

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