Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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Combustion Characteristics of Flameless Combustion by Reactants Injection Conditions

반응물 분사조건에 따른 무화염 연소특성 연구

  • 홍성원 (인천대학교 기계공학과 대학원) ;
  • 이필형 (인천대학교 기계공학과 대학원) ;
  • 황상순 (인천대학교 기계시스템공학부)
  • Received : 2013.03.29
  • Accepted : 2013.05.04
  • Published : 2013.06.28
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Abstract

The flameless combustion has been considered as one of the promising combustion technology for high thermal efficiency, reducing NOx and CO emissions. In this paper, the effect of air and fuel injection condition on formation of flameless combustion was analyzed using three dimensional numerical simulation. The results show that the high temperature region and the average temperature was decreased due to increase of recirculation ratio when air velocity is increased. The average temperature was also affected by entrainment length. Generally mixing effect was enhanced at low entrainment length and dilution was dominated at high entrainment length. This entrainment length was greatly affected by air and fuel injection velocity and distance between air and fuel. It is also found that the recirculation ratio and dilution effect were generally increased by entrainment length and the recirculation ratio, mixing and dilution effect are the significant factor for design of flameless combustion system.

Keywords

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