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Thermal Characteristics of Synthetic Jet Fuels in a Meso-Scale Heat Recirculating Combustor

[+] Author Affiliations
Teresa A. Wierzbicki, Ashwani K. Gupta

University of Maryland, College Park, MD

Ivan C. Lee

U.S. Army Research Laboratory, Adelphi, MD

Paper No. POWER2013-98311, pp. V001T01A034; 6 pages
  • ASME 2013 Power Conference
  • Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance
  • Boston, Massachusetts, USA, July 29–August 1, 2013
  • Conference Sponsors: Power Division
  • ISBN: 978-0-7918-5605-5
  • Copyright © 2013 by ASME


A meso-scale heat recirculating combustor was used to examine the combustion characteristics of two specific synthetic fuels. One of the fuels was made via a Fischer-Tropsch (F-T fuel) process, while the other was produced from tallow (bio-jet fuel). The two fuels were burned in the meso-scale combustor using pure oxygen in a non-premixed injection configuration. The extinction behavior at the fuel-rich and fuel-lean combustion conditions has been investigated for each fuel. The results showed that although the two fuels showed some similarities, the F-T fuel exhibited stable, non-sooting combustion behavior at higher equivalence ratios than the bio-jet fuel. The lean stability limit for the bio-jet fuel was found to be lower (lower equivalence ratio) than that of the F-T fuel. The results were compared with conventional JP-8 jet fuel to provide a comparative analysis of combustion characteristics using the same combustor. A fuel characterization analysis was performed for each fuel, and their respective thermal efficiencies calculated. The F-T and bio-jet fuels both reached a maximum thermal efficiency of about 95% near their respective rich extinction limits.

Copyright © 2013 by ASME



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