Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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CO2 Suppression Characteristics of the Nitrogen-diluted Methane Counterflow Non-premixed Flame

질소로 희석된 대향류 메탄 비예혼합화염에서 CO2에 의한 소화특성

  • Lee, Ho-Hyun (Department of Safety Engineering, Pukyong National University) ;
  • Oh, Chang Bo (Department of Safety Engineering, Pukyong National University) ;
  • Hwang, Cheol Hong (Department of Fire and Disaster Prevention, Daejeon University)
  • 이호현 (부경대학교 안전공학과) ;
  • 오창보 (부경대학교 안전공학과) ;
  • 황철홍 (대전대학교 소방방재학과)
  • Received : 2013.01.21
  • Accepted : 2013.04.19
  • Published : 2013.04.30
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Abstract

The $CO_2$ suppression characteristics and flame structure of nitrogen-diluted methane counterflow non-premixed flame were studied experimentally and numerically. To mimic a situation where combustion product gases are entrained into a compartment fire, fuel stream was diluted with $N_2$. A gas-phase suppression agent, $CO_2$, was diluted in the air-stream to investigate the suppression characteristics by the agent. For numerical simulation, an one-dimensional OPPDIF code was used for comparison with experimental results. An optically-thin radiation model(OTM) was adopted to consider radiation effects on the suppression characteristics. It was confirmed experimentally and numerically that suppression limit decreased with increasing nitrogen mole fraction in the fuel stream. A turning point was found only when a radiation heat loss was considered and the extinguishing concentration for turning point was differently predicted compared to the experiment result. Critical extinguishing concentration when neglecting radiation heat loss was also differently predicted compared with the experimental result.

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References

  1. S. K. Aggarwal, "Extinction of Laminar Partially Premixed Flames," Progress in Energy and Combustion Science, Vol. 35, pp. 528-570, 2009. https://doi.org/10.1016/j.pecs.2009.04.003
  2. D. T. Gottuk, M. J. Peatross, J. P. Farley and F. W. Williams, "The Development and Mitigation of Backdraft : A Real-Scale Shipboard Study," Fire Safety Journal, Vol. 33, pp. 261-282, 1999. https://doi.org/10.1016/S0379-7112(99)00033-8
  3. H. Y. Wang, "Numerical and Theoretical Evaluations of The Propagation of Smoke and in a Full-Scale Tunnel," Fire Safety Journal, Vol. 49, pp. 10-21, 2012. https://doi.org/10.1016/j.firesaf.2011.12.012
  4. M. Babb, S. R. Gollahalli and C. M. Sliepcevich, "Extinguishment of Liquid Heptane and Gaseous Propane Diffusion Flame," Journal of Propulsion and Power, Vol. 15, pp. 260- 265. 1999 https://doi.org/10.2514/2.5421
  5. Y. Saso, N. Saito, C. Liao and Y. Ogawa, "Extinction of Counterflow Diffusion Flames with Halon Replacements," Fire Safety Journal, Vol. 26, pp. 303-326. 1996. https://doi.org/10.1016/S0379-7112(96)00020-3
  6. G. T. Linteris, V. R. Katta and F. Takahashi, "Experimental and Numerical Evaluation of Metallic Compounds for Suppressing Cup-Burner flames," Combustion and Flame, Vol. 138, Issues 1-2, pp. 78-96. 2004. https://doi.org/10.1016/j.combustflame.2004.04.003
  7. W. M. Pitts, J. C. Yang, R. A. Bryant, L. G. Blevins and M. L. Huber, "Characteristics and Identification of Super-effective Thermal Fire-Extinguishing Agents : Final Report," NIST Technical Note 1440, pp. 44-56, 2006.
  8. H. K. Chelliah, C. K. Law and T. Ueda, "An Experimental and Theoretical Investigation of The Dilution, Pressure and Flow- Field Effects on the Extinction Condition of Methane-Air- Nitrogen Diffusion Flames," Twenty-Third Symposium (International) on Combustion, pp. 503-511, 1990.
  9. M. Bundy, A. Hamins and K.Y. Lee, "Suppression Limits of Low Strain Rate Non-Premixed Methane Flames," Combustion and Flame, Vol. 133, pp. 299-310, 2003. https://doi.org/10.1016/S0010-2180(03)00012-9
  10. C. B. Oh, A. Hamins, M. Bundy and J. Park, "The Two-Dimensional Structure of Low Strain Rate Counterflow Nonpremixed- Methane Flames in Normal and Microgravity," Combustion Theory and Modelling, Vol. 12, No. 2, pp. 283-302, 2008. https://doi.org/10.1080/13647830701642201
  11. C. B. Oh, E. J. Lee and J. Park, "Effects of The Burner Diameter on the Flame Structure and Extinction Limit of Counterflow Non-premixed Flames," International Journal of Spray and Combustion Dynamics, Vol. 2, pp. 199-218, 2010. https://doi.org/10.1260/1756-8277.2.3.199
  12. E. J. P. Zegers, B. A. Williams, E. M. Fisher, J. W. Fleming and R. S. Sheinson,"Suppression of Nonpremixed Flames by by Fluorinated Ethanes and Propanes," Combustion and Flame, Vol. 121, pp. 471-487, 2000. https://doi.org/10.1016/S0010-2180(99)00162-5
  13. A. Lock, S. K. Aggarwal, I. K. Puri, and U. Hegde, "Suppression of Fuel and Air Stream Diluted Methane-Air Partially Premixed Flames in Normal and Microgravity," Fire Safety Journal, Vol. 43, pp. 24-35, 2008. https://doi.org/10.1016/j.firesaf.2007.02.004
  14. K. Sheshadri and F. A. Williams, "Laminar Flow between Parallel Plates with Injection of a Reactant at High Reynolds Number," International Journal of Heat Mass Transfer, Vol. 21, pp. 251-253, 1978. https://doi.org/10.1016/0017-9310(78)90230-2
  15. A. E. Lutz, R. J. Kee, J. F. Grcar and F. M. Rupley, "OPPDIF : A Fortran Program for Computing Opposed-Flow Diffusion Flames," Sandia Report, SAND 96-8243, 1997.
  16. R. J. Kee, F. M. Rupley and J. A. Miller, "Chemkin-II : A Fortran Chemical Kinetic Package for the Analysis of Gas Phase Chemical Kinetics," Sandia Report, SAND 89-8009B, 1989.
  17. R. J. Kee, G, Dixon-Lewis, J. Warnatz, M. E. Coltrin and J. A. Miller, "A Fortran Computer Code Package for the Evaluation of Gas-Phase Multicomponent Transport Properties," Sandia Report, SAND 86-8246, 1986.
  18. C. T. Bowman, R. K. Hanson, D. F. Davidson, W. C. Gardiner, V. Lissianski, G. P. Smith, D. M. Golden, M. Frenklach, M. Goldenburg, http://www.me.berkeley.edu/gri_mech/, 1999.
  19. Y. Ju, H. Guo, K. Maruta and F. Liu "On The Extinction Limit and Flammability Limit of Nonadiabatic Stretched Methane- Air Premixed Flames," Journal of Fluid Mech, Vol. 342, pp. 315-334, 1997 https://doi.org/10.1017/S0022112097005636
  20. K. Maruta, M. Yoshida, H. Guo, Y. Ju and T. niioka, "Extinction of Low-Stretched Diffusion Flame in Microgravity," Combustion and Flame, Vol. 112, pp. 181-187, 1998 https://doi.org/10.1016/S0010-2180(97)81766-X
  21. C. J. Sung, B. Liu and C. K. Law, "Structural Response of Counterflow Diffusion Flames to Strain Rate Variations," Combustion and Flame, Vol. 102, pp. 481-492, 1995. https://doi.org/10.1016/0010-2180(95)00041-4