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http://dx.doi.org/10.7316/KHNES.2017.28.2.181

A Study on the Combustion Characteristics with Hydrogen Contents of SNG Fuel in Low-Swirl Combustor  

JEONG, HWANGHUI (Department of Aerospace Engineering, Sunchon National University)
KANG, KIJOONG (School of Mechanical Engineering, Pusan National University)
LEE, KEEMAN (School of Aerospace and Mechanical Engineering)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.28, no.2, 2017 , pp. 181-189 More about this Journal
Abstract
This paper describes experimental results on combustion characteristics with hydrogen contents of synthetic natural gas (SNG) in low swirl combustor. To investigate the effect of hydrogen contents for premixed SNG flame, stability map, CH chemiluminescence images, flame spectrum analysis and emission performances were measured. In the results, as the hydrogen content was increased, the lean flammable limit was expanded and the flame length was decreased. The hydrogen contents affected the flame liftoff height, and it has different tendency according to the equivalence ratio and flame shape. The change of height and length of flame according to hydrogen contents is caused by the fast burning velocity of hydrogen, which can be confirmed by GRI 3.0 reaction mechanism in PREMIX code. The intensity of $OH^*$, $CH^*$ and $C_2^*$ was confirmed by spectrum analysis of flame. As a result, the $CH^*$ intensity was not significantly different according to hydrogen content. The increase of hydrogen contents influenced positively CO and NOx emission performances.
Keywords
Low swirl; Synthetic natural gas; Hydrogen content; Chemiluminescence; Spectrum analysis;
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Times Cited By KSCI : 7  (Citation Analysis)
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