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

  • 제31권1호
  • /
  • Pages.41-48
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  • 2020
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  • 1738-7264(pISSN)
  • /
  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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소용량 수소액화 파일럿 플랜트 구축을 위한 공정의 열역학 해석

Thermodynamic Analysis of a Hydrogen Liquefaction Process for a Hydrogen Liquefaction Pilot Plant with a Small Capacity

  • 김태훈 (한국기계연구원 플랜트융합연구실) ;
  • 최병일 (한국기계연구원 플랜트융합연구실) ;
  • 한용식 (한국기계연구원 플랜트융합연구실) ;
  • 도규형 (한국기계연구원 플랜트융합연구실)
  • KIM, TAEHOON (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM)) ;
  • CHOI, BYUNG-IL (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM)) ;
  • HAN, YONG-SHIK (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM)) ;
  • DO, KYU HYUNG (Department of Plant Technology, Korea Institute of Machinery & Materials (KIMM))
  • 투고 : 2019.10.22
  • 심사 : 2020.02.28
  • 발행 : 2020.02.28
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초록

The present study discussed the thermodynamic analysis of the hydrogen liquefaction process to build a hydrogen liquefaction pilot plant with a small capacity (0.5 ton/day). A 2-stage Brayton cycle utilizing LNG/LN2 cold energy was suggested to be built in Korea for the hydrogen liquefaction pilot plant with a small capacity. Thermodynamic analysis on the effect of various variables on the efficiency of hydrogen liquefaction process was performed. As a result, the CASE in which the ortho-para conversion catalyst was infiltrated inside the heat exchanger showed the best process efficiency. Finally, thermodynamic analysis was performed on the effect of turbo expander compression ratio on the hydrogen liquefaction process and it was confirmed that an optimal turbo expander compression ratio exists.

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참고문헌

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