Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Effect of Oxygen Enriched Air on the Combustion Characteristics in a Coaxial Non-Premixed Jet ( I ) - Lift-off and Flame Stability -

산소부화공기가 동축 비예혼합 제트의 연소특성에 미치는 영향 (I) - 화염의 부상과 안정성

  • 곽지현 (부산대학교 대학원 기계공학과) ;
  • 전충환 (부산대학교 기계기술연구소) ;
  • 장영준 (부산대학교 공과대학 기계공학부)
  • Published : 2004.02.01
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Abstract

Combustion using oxygen enriched air is known as a technology which can increase flame stability as well as thermal efficiency due to improving the burning rate. Lift-off, blowout limit and flame length were examined as a function of jet velocity, coflow velocity and OEC(Oxygen Enriched Concentration). Blowout limit of the flame below OEC 25% decreased with increase of coflow velocity, but the limit above OEC 25% increased inversely. Lift-off height decreased with increase of OEC. In particular, lift-off hardly occurred in the condition above OEC 40%. Flame length of the flames above OEC 40% was increased until the blowout occurred. Great flame stability was obtained since lift-off and blowout limit significantly increased with increase of OEC.

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References

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