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http://dx.doi.org/10.3795/KSME-B.2009.33.9.658

Effect of the Degree of Fuel-Air Mixing and Equivalence Ratio on the NOx Emission and Heat Release in a Dump Combustor  

Cho, Bong-Kug (부산대학교 대학원 기계공학부)
Choi, Do-Wook (부산대학교 대학원 기계공학부)
Kim, Gyu-Bo (부산대학교 화력발전에너지분석기술센터(PC3))
Chang, Young-June (부산대학교 기계기술연구원(RIMT) 기계공학부)
Song, Ju-Hun (부산대학교 기계기술연구원(RIMT) 기계공학부)
Jeon, Chung-Hwan (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.33, no.9, 2009 , pp. 658-665 More about this Journal
Abstract
Lean premixed combustors are used for significant NOx reduction which one of issues in current gas turbine combustor. This study was investigated to estimate the effects of the unmixedness of fuel-air, equivalence ratio on the instability mechanism, NOx emission and combustion oscillation in a lean premixed combustor. The experiments were conducted in a dump combustor at atmospheric pressure conditions using methane as fuel. The swirler angle was $45^{\circ}$, the degrees of fuel-air mixing were 0, 50 and 100 and inlet temperature was 650K. The equivalence ratio was ranging from 0.5 to 0.8. This paper shows that NOx emission was increased when the degree of fuel-air mixing is increased in same equivalence ratio and when equivalence ratio is increased. And the range of the combustion instability was enlarged as a function of increasing of the degree of fuel-air mixing.
Keywords
Combustion Instability; Heat Release Rate; Lean-Premixed; NOx; OH Chemiluminescence;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By SCOPUS : 0
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