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

  • 제33권6호
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  • Pages.707-714
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  • 2022
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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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저출력 및 고출력 SOEC 시스템의 경제성 분석 비교

Economic Analysis and Comparison between Low-Power and High-Power SOEC Systems

  • 뚜안앵 (한국기계연구원 무탄소연료발전연구실) ;
  • 김영상 (한국기계연구원 무탄소연료발전연구실) ;
  • 이동근 (한국기계연구원 무탄소연료발전연구실) ;
  • 안국영 (한국기계연구원 무탄소연료발전연구실) ;
  • 배용균 (한국기계연구원 무탄소연료발전연구실) ;
  • 이상민 (한국기계연구원 무탄소연료발전연구실)
  • TUANANH, BUI (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM)) ;
  • YOUNG SANG, KIM (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM)) ;
  • DONG KEUN, LEE (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM)) ;
  • KOOK YOUNG, AHN (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM)) ;
  • YONGGYUN, BAE (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM)) ;
  • SANG MIN, LEE (Department of Zero-carbon Fuel and Power Generation, Korea Institute of Machinery & Materials (KIMM))
  • 투고 : 2022.09.30
  • 심사 : 2022.10.13
  • 발행 : 2022.12.30
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초록

Hydrogen production using solid oxide electrolysis cells (SOEC) is a promising technology because of its efficiency, cleanness, and scalability. Especially, high-power SOEC system has received a lot of attention from researchers. This study compared and analyzed the low-power and high-power SOEC system in term of economic. By using revenue requirement method, levelized cost of hydrogen (LCOH) was calculated for comparison. In addition, the sensitivity analysis was performed to determine the dependence of hydrogen cost on input variables. The results indicated that high-power SOEC system is superior to a low-power SOEC system. In the capital cost, the stack cost is dominant in both systems, but the electricity cost is the most contributed factor to the hydrogen cost. If the high-power SOEC system combines with a nuclear power plant, the hydrogen cost can reach 3.65 $/kg when the electricity cost is 3.28 ¢/kWh and the stack cost is assumed to be 574 $/kW.

키워드

과제정보

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구과제이며(No. 20213030040110), 또한 농촌진흥청의 농업과학기술 연구개발사업(No. PJ016288, 수소연료전지 3중 열병합 시스템 농업모델 개발)의 지원으로 수행되었으며 이에 감사드린다.

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