한국연소학회지 (Journal of the Korean Society of Combustion)

  • 제19권3호
  • /
  • Pages.44-52
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  • 2014
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  • 1226-0959(pISSN)
  • /
  • 2466-2089(eISSN)
한국연소학회 (The Korean Society of Combustion)
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SOFC/가스터빈 혼합발전을 위한 SOFC 생성물의 연소특성

Combustion Characteristics of the SOFC Products for SOFC/Gas Turbine Hybrid Power Generation System

  • 이병준 (영남대학교 기계공학부) ;
  • 배철한 (영남대학교 기계공학부)
  • Lee, Byeong Jun (School of Mechanical Engineering, Yeungnam University) ;
  • Bae, Chul Han (School of Mechanical Engineering, Yeungnam University)
  • 투고 : 2014.08.25
  • 심사 : 2014.09.17
  • 발행 : 2014.09.30
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초록

Solid oxide fuel cell(SOFC) makes electric power using hydrogen or reformed from methane and emits high temperature products that contain flammable species like hydrogen, carbon monoxide and methane which varies with operation condition. SOFC/gas turbine integrated system which uses thermal and chemical energy of the discharges is more efficient than SOFC itself. Burning character of the SOFC products will affect the efficiency and stability of the system. Experiments were conducted to know the characteristics of the flame for two typical composition of SOFC products, i.e. start-up and steady state composition. When coflowing air temperature was higher than $600^{\circ}C$, auto-ignitin occurred for both fuels. Though start-up fuel has higher contents of hydrogen, it makes longer flame than steady state composition. It was inferred that the amount of oxidizer necessary to burn makes this phenomenon. Steady state composition fuel was unstable since it contains lots of water. Nozzle that had 6 holes, distance between each hole was 16.7 times of hole diameter, improved the stability of the flame.

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참고문헌

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