Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
권호 표지
DOI QR코드

DOI QR Code

Direct Observation of Premixed Flame Propagation Characteristics in an Annular Coaxial 5-Tubes Burner

환형 5중 동축관 연소기 내부에서의 예혼합 화염의 전파 특성 직접 관찰

  • 조문수 (중앙대학교 기계공학부 대학원) ;
  • 백다빈 (중앙대학교 기계공학부 대학원) ;
  • 김남일 (중앙대학교 기계공학부)
  • Received : 2013.08.05
  • Accepted : 2013.09.23
  • Published : 2013.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Flame stabilization characteristics of premixed flames in an annular coaxial 5-tubes burner (AC5TB) were investigated experimentally. The AC5TB was made of five quartz tubes, and the flame stabilization conditions in that burner were investigated with the variation of equivalence ratio and the flow velocities. Flame behaviors inside of narrow annular tubes could be observed directly. Overall flame stabilization conditions were similar to that of the previous study, while the flame behaviors and structures were different mainly due to the controlled uniform distribution of the velocities in channels. Flame flashback conditions were thought to be governed by the competition between heat release rate, heat loss and heat recirculation in each channel. Stationary flames at a fixed location were compared in its velocity distribution and burned gas temperature across the channel. This AC5TB can be a basic configuration for the development of flame stabilization model of porous media combustors, and it will help understand about the real behavior of flames in meso-scale combustion spaces.

Keywords

References

  1. 이용일, 신현동, "측면 열손실 또는 열공급에 의 한 세라믹 연소기 내의 화염 거동", KOSCO SYMPOSIUM논문집(1994), pp. 43-52.
  2. 황상순, "다공세라믹 버너를 이용한 표면화염의 연소 및 배기특성", 한국연소학회 한국연소학회지 2001, pp. 29-35.
  3. 임인권, "서로 다른 물성치로 이루어진 다공 세라믹 연소기 속에서의 예혼합화염 연소에 대한 수치해석 연구", 한국연소학회지, Vol.2, No.1, pp.1-8.(1997)
  4. D.K. Min, H.D. Shin, Laminar premixed flame stabilized inside a honeycomb ceramic, Int. J. Heat Mass Transfer, 34 (1991) pp. 341-356. https://doi.org/10.1016/0017-9310(91)90255-D
  5. R.S. Dhamrat, J.L. Ellzey, "Numerical and experimental study of the conversion of methane to hydrogen in a porous media reactor", Combustion and flame 144(2006), pp. 698-709. https://doi.org/10.1016/j.combustflame.2005.08.038
  6. G. Brenner, K. Pickenäcker, O. Pickenäcker, D. Trimis, K. Wawrzinek, T. Weber, "Numerical and experimental investigation of matrix-stabilized methane/ air combustion in porous inert media", Combustion and flame, 123(2000), pp. 201-213. https://doi.org/10.1016/S0010-2180(00)00163-2
  7. 박승일, 이민정, 김남일, "다공성 연소기 모델로서의 다중 채널 연소기 내부 화염의 안정화 특성 기초 연구", 대한기계학회논문집(B), 35(8) (2011) pp. 815-823.
  8. 조문수, 백다빈, 김남일, "좁은 다중 동축 석영관 내부에서의 예혼합 화염의 전파 특성에 대한 기초 실험", 한국연소학회지, Vol. 18, No.2, pp. 1-7(2013)