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Part-Load Operation of a Piloted FLOX® Combustion System

[+] Author Affiliations
Tim Roediger, Oliver Lammel, Manfred Aigner

German Aerospace Center (DLR), Stuttgart, Germany

Christian Beck, Werner Krebs

Siemens AG, Mülheim/Ruhr, Germany

Paper No. GT2012-69006, pp. 737-748; 12 pages
  • ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
  • Volume 2: Combustion, Fuels and Emissions, Parts A and B
  • Copenhagen, Denmark, June 11–15, 2012
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4468-7
  • Copyright © 2012 by ASME


A large operational envelope is a key requirement for modern gas turbines. Fuel staging is used here to improve the part load performance of an enhanced FLOX® type combustor. A swirl-stabilized pilot stage is integrated in the FLOX® burner and the results of high pressure lab-scale experiments at system relevant conditions are presented. The operational envelope of the piloted system could be extended by approximately 10%. Pressure scaling and variations of air preheat temperature and jet velocity describe fundamental characteristics of the piloted system. OH* chemiluminescence imaging is used to investigate flame shapes and the effect of the interacting flames. Emissions and pressure pulsations define limits, and optimum operation conditions of the combustor and show the influence of part load relevant parameters.

Copyright © 2012 by ASME



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