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A Study on Combustion Characteristic Methane Fuel according to Torch Volume Variation in a Constant Volume Combustion Chamber

정적연소기에서 토치의 체적 변화에 따른 메탄의 연소특성 파악

  • 권순태 (서울과학기술대학교 에너지환경대학원) ;
  • 박찬준 (서울과학기술대학교 기계공학과) ;
  • 엄인용 (서울과학기술대학교 기계공학과)
  • Received : 2011.01.07
  • Accepted : 2011.03.31
  • Published : 2011.03.31

Abstract

Six different size of torch-ignition device were applied in a constant volume combustion chamber for evaluating the effects of torch-ignition on combustion. The torch-ignition device was designed for six different volumes and same orifice size. The combustion pressures were measured to calculate the mass burn fraction and combustion enhancement rate. In addition, the flame propagations were visualized by shadowgraph method for the qualitative comparison. The result showed that the combustion pressure and mass burn fraction were increased when using the torch ignition device. And the combustion duration were decreased. The combustion enhancement rates of torch-ignition cases were improved in comparison with conventional spark ignition. Finally, the visualization results showed that the torch-ignition induced faster burn than conventional spark ignition due to the earlier transition to turbulent flame and larger flame surface, during the initial stage. Finally, the initial flame propagation was affected by torch-ignition volume.

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