Clean Air: International Journal on Energy for a Clean Environment

ISSN for PRINT: 1561-4417

For Online Access

Best Paper Award Selection - Editorial Board Site

2006, Volume7

Issue 3

123 pages

DOI: 10.1615/InterJEnerCleanEnv.v7.i3

Issue price - $128.00

Dr. Leonardo P. Rangel
Escola Politécnica, Universidade de Pernambuco, Recife-PE, 50750-410, Brazil

L. M. Fletcher
Energy and Resources Research Institute / Centre for Computational Fluid Dynamics, University of Leeds, Leeds LS2 9JT, UK

M. Pourkashanian
Department of Fuel and Energy, Energy and Resources Research Institute / Centre for Computational Fluid Dynamics, University of Leeds, Leeds LS2 9JT, UK

A. Williams
Department of Fuel and Energy, Energy and Resources Research Institute / Centre for Computational Fluid Dynamics, University of Leeds, Leeds LS2 9JT, UK

Rapid mixing of the fuel and oxidizer has led burner manufacturers to consider design applications that employ a system of "partial premix." Previous computational fluid dynamics studies on a novel low-NO_x industrial burner, employing a system of partial premix, showed a considerable reduction in exhaust NO_x concentration for high degrees of secondary air staging. Thus, in order to further understand the physical and chemical interaction produced by the partial premix system, a laboratory-scale counterflow system was constructed for a CH4-air mixture. Different mixture configurations were applied and exhaust gas concentrations of typical combustion species (O₂, CO₂, CO, and NO_x) and flame temperatures were measured via standard techniques. Experimental observation indicated that double flames appeared to play an important role regarding the amount of exhaust NO_x generated. By varying the equivalence ratio and air strain rates, the partial premix configuration of the double flame changed the reaction zone location, helping to reduce NO_x formation.

DOI: 10.1615/InterJEnerCleanEnv.v7.i3.10 Download article, 187-202 pages

Article price - $35.00

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