Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지

A Study on NO Emission Behavior through Preferential Diffusion of $H_2$ and H in $CH_4-H_2$ Laminar Diffusion Flames

메탄-수소 층류확산화염에서 $H_2$와 H의 선호확산이 NO 거동에 미치는 영향에 관한 연구

  • Park, Jeong (School of Mechanical Engineering, Pukyung National University) ;
  • Kwon, Oh-Boong (School of Mechanical Engineering, Pukyung National University) ;
  • Yun, Jin-Han (Environment & Energy Research Division, Korea Institute of Machinery and Materials) ;
  • Keel, Sang-In (Environment & Energy Research Division, Korea Institute of Machinery and Materials)
  • 박정 (부경대학교 기계공학부) ;
  • 권오붕 (부경대학교 기계공학부) ;
  • 윤진한 (한국기계연구원 청정환경기계연구센터) ;
  • 길상인 (한국기계연구원 청정환경기계연구센터)
  • Published : 2007.09.15
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Abstract

A study has been conducted to clarify NO emission behavior through preferential diffusion effects of $H_2$ and H in methane-hydrogen diffusion flames. A comparison is made by employing three species diffusion models. Special concerns are focused on what is the deterministic role of the preferential diffusion effects in flame structure and NO emission. The behavior of maximum flame temperatures with three species diffusion models is not explained by scalar dissipation rate but the nature of chemical kinetics. The preferential diffusion of H into reaction zone suppresses the populations of the chain carrier radicals and then flame temperature while that of $H_2$ produces the increase of flame temperature. These preferential diffusion effects of $H_2$ and H are also discussed about NO emissions through the three species diffusion models.

Keywords

References

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