RT Journal Article
ID 5510833c096d989a
A1 Rangel, Leonardo P.
A1 Fletcher, L. M.
A1 Pourkashanian, M. 
A1 Williams, A.
T1 EXPERIMENTAL   INVESTIGATIONS OF  COUNTERFLOW  DOUBLE   FLAMES APPLICABLE  TO  AN   INDUSTRIAL   NATURAL GAS-FIRED   BURNER
JF International Journal of Energy for a Clean Environment
JO IJECE
YR 2006
FD 2007-03-23
VO 7
IS 3
SP 187
OP 202
AB 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<sub><i>x</i></sub> industrial burner, employing a system of partial premix, showed a considerable reduction in exhaust NO<sub><i>x</i></sub> 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 (O<sub>2</sub>, CO<sub>2</sub>, CO, and NO<sub><i>x</i></sub>) 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<sub><i>x</i></sub> 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<sub><i>x</i></sub> formation.
PB Begell House
LK https://www.dl.begellhouse.com/journals/6d18a859536a7b02,4a467dbf7cf032fb,5510833c096d989a.html