Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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System Development of a 100 kW Molten Carbonate Fuel Cell III (System Control and Operation Mode)

100 kW급 용융탄산염 연료전지 시스템 개발 III (시스템 제어 및 운전모드)

  • Lim, Hee-Chun (New Technology Center, Korea Electric Power Research Institute) ;
  • Ahn, Kyo-Sang (New Technology Center, Korea Electric Power Research Institute) ;
  • Seo, Hai-Kyung (New Technology Center, Korea Electric Power Research Institute) ;
  • Eom, Yeong-Chang (New Technology Center, Korea Electric Power Research Institute)
  • 임희천 (한전 전력연구원 신기술센타) ;
  • 안교상 (한전 전력연구원 신기술센타) ;
  • 서혜경 (한전 전력연구원 신기술센타) ;
  • 엄영창 (한전 전력연구원 신기술센타)
  • Published : 2003.07.21
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Abstract

For developing a 100 kW MCFC power generation system, Several design parameters for a fuel cell stack and system analysis results by Cycle Tempo, a processing computer soft ware, were described. Approximately two substacks with 90 cells are required to generate 100 kW at a current density of $125\;mA/cm^2$ with $6000\;cm^2$ of cells. An overall heat balance was calculated to predict exit temperature. The 100 kW power is expected only under pressurized operation condition at 3 atm. Recycle of cathode gas by more than 50% is recommended to run the stack at $125\;mA/cm^2$ and 3 atm. Manifolds should be designed based on gas flow rates for the suggested operating condition. The fuel cell power generation system was designed conceptually with several choices of utilization of anode exhaust gas. To operate and evaluate the MCFC system, control and measurement system and operation mode are designed before 100 MCFC system construction. In system control schematics, OS, PLC and MMI were consisted and have roles for MCFC system control. For operation of 100 kW MCFC system, NS, PS PR mode were considerated step by step and simulated.

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