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http://dx.doi.org/10.15231/jksc.2013.18.2.008

Combustion Characteristics of Flameless Combustion by Reactants Injection Conditions  

Hong, Seong Weon (인천대학교 기계공학과 대학원)
Lee, Pil Hyong (인천대학교 기계공학과 대학원)
Hwang, Sang Soon (인천대학교 기계시스템공학부)
Publication Information
Journal of the Korean Society of Combustion / v.18, no.2, 2013 , pp. 8-16 More about this Journal
Abstract
The flameless combustion has been considered as one of the promising combustion technology for high thermal efficiency, reducing NOx and CO emissions. In this paper, the effect of air and fuel injection condition on formation of flameless combustion was analyzed using three dimensional numerical simulation. The results show that the high temperature region and the average temperature was decreased due to increase of recirculation ratio when air velocity is increased. The average temperature was also affected by entrainment length. Generally mixing effect was enhanced at low entrainment length and dilution was dominated at high entrainment length. This entrainment length was greatly affected by air and fuel injection velocity and distance between air and fuel. It is also found that the recirculation ratio and dilution effect were generally increased by entrainment length and the recirculation ratio, mixing and dilution effect are the significant factor for design of flameless combustion system.
Keywords
Flameless combustion; Entrainment effect; Mixing effect; Dilution effect; Injection condition;
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1 C. S. Lee and J. Y. Jeon, "Activities on IEA/ ECERC Delegation of Korea", Journal of Korean Society of Combustion, 2012, Vol. 17, No. 4, pp. 1-4.
2 J. Li, W. Yang, W. Blasiak and A. Ponzio, "Volumetric combustion of biomass for $CO_2$ and NOx reduction in coal-fired boilers", Fuel, 2012, Vol. 102, pp.624-633.   DOI   ScienceOn
3 B. O. Yang and I. G. Lim, "Experimental Study on High Temperature Air Regenerative Combustion System", 1999, 19th KOSCO Symposium, pp. 189-200.
4 E. S. Cho, B. Danon, W. de Jong and D. J. E. M. Roekaerts, "Behavior of a 300 kWth regenerative multi-burner flameless oxidation furnace", Applied Energy, 2001, Vol. 88, pp. 4592-4959.
5 J. A. Wünning and J. G. Wünning, "FLAMELESS OXIDATION TO REDUCE THERMAL NO-FORMATION", Progress in Energy and Combustion Science, 1997, Vol. 23, pp.81-94.   DOI   ScienceOn
6 A. S. Verissimo, A. M. A. Rocha and M. Costa, "Importance of the inlet air velocity on the establishment of flameless combustion in a laboratory combustor", Experimental Thermal and fluid Sience, 2013, Vol. 44, pp.75-81.   DOI   ScienceOn
7 K. Arghode and K. Gupta, "Effect of flow field for colorless distributed combustion(CDC) for gas turbine combustion", Applied Energy, 2010, Vol. 87, pp. 1631-1640.   DOI   ScienceOn
8 K. Arghode and K. Gupta, "Investigation of forward flow distributed combustion for gas turbine application", Applied Energy, 2011. Vol. 88, pp. 29-40.   DOI   ScienceOn
9 K. Arghode and K. Gupta, "Investigation of reverse flow distributed combustion for gas turbine application", Applied Energy, 2011, Vol. 88, pp. 1096-1104.   DOI   ScienceOn
10 G. G. Szego, B. B. Dally and G. J. Nathan, "Operational characteristics of a parallel jet MILD combustion burner system", Combustion and Flame, 2009, Vol. 156, pp. 429-438.   DOI   ScienceOn
11 J. Mi, P. Li and C. Zheng, "Impact of injection conditions on flame characteristics from a parallel multi-jet burner", Energy, 2011, Vol. 36, pp. 6583-6595.   DOI   ScienceOn
12 E. Khalil and K. Gupta, "Swirling distributed combustion for clean energy conversion in gas turbine applications", Applied Energy, 2011, Vol. 88, pp. 3685-3693.   DOI   ScienceOn
13 E. W. Grandmaison, I. Yimer, H. A. Becker and A. Sobiesiak, "The Strong-Jet/Weak-Jet Problem and Aerodynamic Modeling of the CGRI Burner", Combustion and Flame, 1998, Vol. 114, pp. 381-396.   DOI   ScienceOn
14 B. E. Launder and D. B. Spalding, "The numerical computation of turbulent flows", Computer Methods in Applied Mechanics and Engineering, 1974, Vol. 3, pp. 269-289.   DOI   ScienceOn