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5987457 
Journal Article 
Experimental study on premixed CH4/air mixture combustion in micro Swiss-roll combustors 
Zhong Bei-Jing; Wang Jian-Hua 
2010 
Yes 
Combustion and Flame
ISSN: 0010-2180 
157 
12 
2222-2229 
WOS:000283967300002 
Excess enthalpy combustion is a promising approach to stabilize flame in micro-combustors. Using a Swiss-roll combustor configuration, excess enthalpy combustion can be conveniently achieved. In this work, three types of Swiss-roll combustors with double spiral-shaped channels were designed and fabricated. The combustors were tested using methane/air mixtures of various equivalence ratios. Both temperature distributions and extinction limits were determined for each combustor configuration at different methane mass flow rates. Results indicate that the Swiss-roll combustors developed in the current study greatly enhance combustion stability in center regions of the combustors. At the same time, excess enthalpy combustors of the Swiss-roll configuration significantly extend the extinction limits of methane/air mixtures. In addition, the effects of combustor configurations and thermal insulation arrangements on temperature distributions and extinction limits were evaluated. With heat losses to the environment being significant, the use of thermal insulations further enhances the flame stability in center regions of the Swiss-roll combustors and extends flammable ranges. 
Swiss-roll combustor; CH4 premixed combustion; Extinction limits