Experimental Investigation on the Influence of Simulated EGR Addition on Swirl-Stabilized Flames
Publication: Journal of Energy Engineering
Volume 142, Issue 2
Abstract
Low-temperature combustion concepts for transport and power generation employ mixture dilution techniques, such as exhaust gas recirculation (EGR), that offer the potential of fuel flexibility, reduced pollutant emissions, and improved efficiency. These combustion modes, however, display a higher sensitivity to the compositional changes brought about by dilution, which in turn may have an adverse influence on the overall system performance. A fundamental study on the interactions between methane and simulated EGR was carried out on a swirl-stabilized, stoichiometric flame. The effects of varying levels and composition of diluents and preheating temperatures on flame structure and exhaust emissions, were experimentally investigated. Reductions of up to 90% and over 95% in and CO emissions, respectively, where observed for higher levels of added diluents, whereas an increase in preheating temperature resulted in the opposite trends. It has been further demonstrated that, depending on fuel and the chemical composition of the diluents, chemical effects on and CO emissions can be very significant.
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Acknowledgments
The research leading to these results has received funding from the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/2007-2013/ under REA grant agreement number 607214.
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Information
Published In
Journal of Energy Engineering
Volume 142 • Issue 2 • June 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: May 18, 2015
Accepted: Jul 31, 2015
Published online: Oct 7, 2015
Discussion open until: Mar 7, 2016
Published in print: Jun 1, 2016
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