Design and Self-sustainable Operation of 1 kW SOFC System

1kW 고체산화물 연료전지(SOFC) 시스템 설계 및 자열운전

  • Lee, Tae-Hee (Green Growth Technology Laboratory, Korea Electric Power Research Institute) ;
  • Choi, Jin-Hyeok (Green Growth Technology Laboratory, Korea Electric Power Research Institute) ;
  • Park, Tae-Sung (Green Growth Technology Laboratory, Korea Electric Power Research Institute) ;
  • Yoo, Young-Sung (Green Growth Technology Laboratory, Korea Electric Power Research Institute) ;
  • Nam, Suk-Woo (Center for Fuel Cell Research, Korea Institute of Science and Technology)
  • 이태희 (한전 전력연구원 녹색성장연구소) ;
  • 최진혁 (한전 전력연구원 녹색성장연구소) ;
  • 박태성 (한전 전력연구원 녹색성장연구소) ;
  • 유영성 (한전 전력연구원 녹색성장연구소) ;
  • 남석우 (한국과학기술연구원)
  • Published : 2009.10.31

Abstract

KEPRI (Korea Electric Power Research Institute) has studied planar type solid oxide fuel cell (SOFC) stacks using anode-supported cells and kW class co-generation systems for residential power generation. In this work, a 1 kW SOFC system consisted of a hot box part, a cold BOP (balance of plant) part, and a hot water reservoir. The hot box part contained a SOFC stack made up of 48 cells, a fuel reformer, a catalytic combustor, and heat exchangers. Thermal management and insulation system were especially designed for self-sustainable operation in that system. A cold BOP part was composed of blowers, pumps, a water trap, and system control units. When the 1 kW SOFC stack was tested using hydrogen at $750^{\circ}C$, the stack power was about $1.2\;kW_e$ at 30 A and $1.6\;kW_e$ at 50 A. Turning off an electric furnace, the SOFC system was operated using hydrogen and city gas without any external heat source. Under self-sustainable operation conditions, the stack power was about $1.3\;kW_e$ with hydrogen and $1.2\;kW_e$ with city gas respectively. The system also recuperated heat of about $1.1\;kW_{th}$ by making hot water.

Keywords

References

  1. Ryan O'Hayre, Suk-Won Cha, Whitney Colella and Fritz B. Prinz, 'FUEL CEIL FUNDAMENTALS', John Wiley & Sons, New York, 2006, pp. 3-19
  2. James Larminie and Andrew Dicks, 'Fuel Cell Systems Explained', 2nd Edition, John Willey & Sons, UK. 2003, pp. 3-24
  3. B.C.H. Steel and A. Heinzel, 'Materials for Fuel Cell Technology', Nature, 414[15], 2001, pp. 345-352 https://doi.org/10.1038/35104620
  4. O. Yamamoto, 'Solid Oxide Feul Cells: Fundamental Aspects and Prospects', Electrochemical Acta, 45, 2000, pp. 2423-2435 https://doi.org/10.1016/S0013-4686(00)00330-3
  5. 범주, 이정현, 김도형, 강승원, 임희천, '75kW 용융탄산염 연료전지(MCFC) 스택 내 압력 손실 해석', 한국수소 및 신에너지학회 논문집, Vol. 19, No.5, 2008, pp. 367-376