Effect of Flow Field on NOx Emission Properties of Jet Nonpremixed Flames in Cylindrical Furnaces

• NODA Susumu

  Department of Mechanical Engineering, Toyohashi University of Technology

• PARWATHA I Gede

  Graduate School of Engineering, Toyohashi University of Technology

• NADA Yuzuru

  Department of Mechanical Engineering, Toyohashi University of Technology

• NISHIO Shigenori

  Graduate School of Engineering, Toyohashi University of Technology

• FUKUSHIGE Shingo

  Graduate School of Engineering, Toyohashi University of Technology

抄録

The flow field characteristics of confined flames have been investigated for propane nonpremixed flames in cylindrical furnaces. The effects of furnace inner diameter D₁, air inlet velocity difference ΔU_a, and global equivalence ratio φ on the flow field are related to NOx emission. The emission index of NOx, EINOx, decreases roughly with the increases of the above parameters. This decrease is observed as a consequence of flame stretch and dilution by the burned gas. The flame stretch is related to the velocity difference introduced by multiple inlets, and the dilution is attributable to the recirculation structure formed at the bottom of the furnace. The present investigation shows the mechanism of burner/chamber configuration inciting the flow field and indirectly controlling NOx emission.

収録刊行物

• Journal of Environment and Engineering

  Journal of Environment and Engineering 2 (4), 730-739, 2007

  一般社団法人 日本機械学会

キーワード

• Turbulent Nonpremixed Flame
• Furnace Combustion
• NOx Emission
• Exhaust Gas Recirculation
• Chamber Size
• Global Equivalence Ratio
• Turbulence

詳細情報

• CRID: 1390282680238597760
• NII論文ID: 130000076948
• DOI: 10.1299/jee.2.730
• ISSN: 1880988X
• Web Site: http://www.jstage.jst.go.jp/article/jee/2/4/2_4_730/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可