Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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A Study on the Self Flue Gas Recirculating Flow of the Regenerative Low NOx Burner

축열식 저 NOx 연소기의 배기가스 내부 재순환 유동에 대한 연구

  • 김종규 (서울대학교 기계항공공학부 대학원) ;
  • 강민욱 (서울대학교 기계항공공학부 대학원) ;
  • 윤영빈 (서울대학교 기계항공공학부) ;
  • 동상근 (한국에너지기술연구원)
  • Published : 2001.06.30
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Abstract

Self flue gas recirculation flow is an effective method for low NOx emission in a regenerative low NOx burner. The object of this study is to analyze self flue gas recirculating flow by varying the jet velocity of the combustion air. Fuel and air flow rates are fixed and combustion air jet nozzle diameters are 13, 6.5 and 5mm. The stoichiometric line is obtained from the concentration of fuel using the acetone PLIF technique. It is found that self flue gas recirculating flow is entrained into that line using the two color PIV technique. As the jet velocity of combustion air is increased, the flue gas entrainment rate into the stoichiometric line is increased. This result suggests that NOx emission can be reduced due to the effects of flue gas lowering the flame temperature.

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