Performance Evaluation of a Model Swirl Burner under Premixed or Stratified Inlet Mixture Conditions
Publication: Journal of Energy Engineering
Volume 141, Issue 2
Abstract
This work presents a comparative study of the performance between fully premixed and stratified propane flames stabilized in a disk burner configuration operating with a swirl coflow over a range of stoichiometric to ultra-lean conditions. A selection of radial equivalence ratio gradients up to the fully premixed case are regulated by staged premixing of propane and air within a double cavity formed along three concentric disks. Flame stabilization is established at the recirculation region of the afterbody disk. Measurements of temperatures, flame chemiluminescence images of and , and gas analysis provided information for the interpretation of the relative variations in flame structure and burner performance. The study elucidates some aspects regarding the influence of the variable inlet fuel–air profile and its interaction with the swirling coflow on the stabilization and disposition of the toroidal flame front. The results help to delineate important differences in the emission performance of each setup and provide useful information to allow better control or exploitation of their variable mixing characteristics and improve their modeling.
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Acknowledgments
This work was partly supported by the Research Council of the University of Patras.
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Information
Published In
Journal of Energy Engineering
Volume 141 • Issue 2 • June 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Apr 14, 2014
Accepted: Aug 25, 2014
Published online: Oct 6, 2014
Discussion open until: Mar 6, 2015
Published in print: Jun 1, 2015
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