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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Numerical Analysis on the Flow Distribution in a 1 kWe SOFC Stack of Internal Manifolds According to the Variation of Manifold Sizes

매니폴드 크기에 따른 1 kWe급 내부 매니폴드형 고체산화물 연료전지 스택 유량 분배에 관한 수치 해석

  • KIM, YOUNG JIN (Department of Mechanical Engineering, Hannam University) ;
  • YIN, HAOYUAN (Department of Mechanical Engineering, Hannam University) ;
  • KIM, HYEON JIN (High Temperature Energy Conversion Lab, Korea Institute of Energy Research) ;
  • YUN, KYONG SIK (High Temperature Energy Conversion Lab, Korea Institute of Energy Research) ;
  • YU, JI HAENG (High Temperature Energy Conversion Lab, Korea Institute of Energy Research)
  • 김영진 (한남대학교 기계공학과) ;
  • 윤호원 (한남대학교 기계공학과) ;
  • 김현진 (한국에너지기술연구원 고온에너지전환연구실) ;
  • 윤경식 (한국에너지기술연구원 고온에너지전환연구실) ;
  • 유지행 (한국에너지기술연구원 고온에너지전환연구실)
  • Received : 2021.12.22
  • Accepted : 2022.01.27
  • Published : 2022.02.28
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Abstract

In this study, we performed numerical analysis for 1 kWe SOFC stack of internal manifold types according to the different manifold sizes to verify the influence of the flow uniformity into each cell. To simulate the flow phenomena in the stack, the continuity and momentum conservation equations including the standard k-𝜺 turbulent model for the steady-state conditions were applied. From the calculation results, we verified that the pressure drop from inlet pipes to outlet pipes decreased to a log scale as the manifold size increased in the internal manifold types. Also, we found that the flow uniformity increased on an exponential scale as the manifold size increased. In addition, the calculation results showed that the flow uniformity gradually improved as the fuel and oxygen utilization increased.

Keywords

Acknowledgement

이 논문은 2021년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구입니다(20213030030220, 캐스케이드 스택을 활용한 10 kWe급 고효율 SOFC 시스템 기술개발).

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