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

  • 제29권6호
  • /
  • Pages.730-736
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  • 2005
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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다수 상호작용 화염의 공해배출물 특성

Effect of Flame Interaction on the NO Emission

  • 김진현 (한국기계연구원 복합재료그룹) ;
  • 이병준 (영남대학교 기계공학부)
  • 발행 : 2005.06.01
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초록

It has been reported that the interacting multiple jet flames of propane fuel are not extinguished even at the choking velocity at the nozzle exit if eight small nozzles are arranged along the imaginary circle of $40{\sim}72$ times the diameter of single nozzle. In this research, experiments were conducted to know the NO and CO emission characteristics of the interacting flames. Measurements along the centerline of the flame revealed that decrease in CO concentration was followed by the NO decrease and $O_2$ increase. It was found that interacting flame emitted less NO than that of similar area single jet flame. Also, NO emission of partially premixed interacting flame was decreased up to $17\%$ of that of non-premixed multiple jet flame. Though the mechanism of the NO reduction was not clear from this experiment, it's been shown that partially premixed multiple jet flames could be used to achieve clean and highly stable combustion.

키워드

참고문헌

  1. Kim, H.Y. and Chun, C.K., 1991, 'The Interaction of Gaseous Diffusion Flames,' Trans. of the KSME, Vol. 15, No.1, pp. 355-365
  2. Chun, C.K., 1993, 'Production of NO in Interacting Laminar Diffusion Flames,' Trans. of the KSME, Vol. 17, No. 1, pp. 190-199
  3. Menon, R. and Gollahalli, S. R., 1985, 'Multiple Jet Gas Flames in Still Air,' In Heat Transfer in Fire and Combustion Systems, ASME poblication HTD, Vol. 45, pp. 127-136
  4. Menon R. and Gollahalli S. R., 1988, 'Combustion Characteristics of Interaction Multiple Jets in Cross Flow,' Combustion. Science and Technology, Vol. 60, pp. 375-389 https://doi.org/10.1080/00102208808923994
  5. Lee, S. and Lee, B.J., 2001, 'Characteristics of Interacting Lifted Flames,' Trans. of the KSME(B), Vol. 25, No. 4, pp. 461-466
  6. Kim, J.S. and Lee, B.J., 2003, 'Stability Enhancement by the Interaction of Diffusion Flames,' Trans. of the KSME(B), Vol. 27, NO. 5, pp. 1420-1426 https://doi.org/10.1097/01.ALC.0000087581.13912.64
  7. Lee, B.J. Kim, J.S. and Lee, S., 2004, 'Enhancement of Blowout Limit by The Interaction of Multiple Nonpremixed Jet Flames,' Combust. Sci. and Tech., Vol. 176, pp. 481-497 https://doi.org/10.1080/00102200490276700
  8. Lee, B.J. and Kim, J.H., 2005, 'Nozzle Configurations for Partially Premixed Iinteracting Jet Flame to Enhance Blowout Limits,' Trans. of the KSME(B), Vol. 29, pp. 71-79 https://doi.org/10.3795/KSME-B.2005.29.1.071
  9. Lee, B.J. and Kim, J.H., 2005, 'Characteristics of Methane Non-Premixed Multiple Jet Flames,' Trans. of the KSME(B), Vol. 29, pp. 349-355 https://doi.org/10.3795/KSME-B.2005.29.3.349
  10. Turns, S. R., 1996, An Introduction to Combustion, McGraw Hill, 2ed, p. 494

피인용 문헌

  1. Effect of Lean-rich Fuel Staging to the Multiple Jet Flames on the Blowout Velocity vol.32, pp.1, 2008, https://doi.org/10.3795/KSME-B.2008.32.1.007