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Prediction of Combustion Efficiency and NOx Levels for Diffusion Flame Combustors in HAT Cycles

[+] Author Affiliations
Alexandr A. Belokon, Konstantin M. Khritov, Lev A. Klyachko, Sergey A. Tschepin, Vladimir M. Zakharov

ECOLEN, Moscow, Russia

George Opdyke, Jr.

PTA, Media, PA

Paper No. GT2002-30609, pp. 791-797; 7 pages
doi:10.1115/GT2002-30609
From:
  • ASME Turbo Expo 2002: Power for Land, Sea, and Air
  • Volume 1: Turbo Expo 2002
  • Amsterdam, The Netherlands, June 3–6, 2002
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-3606-1 | eISBN: 0-7918-3601-0
  • Copyright © 2002 by ASME

abstract

Diffusion flame combustor test results are presented for methane firing in steam/air mixtures containing up to 20% steam. The tests were conducted at atmospheric pressure with combustor inlet temperatures up to 700K. Steam and air were fully premixed before combustion. Combustion efficiency and NOX levels were measured. The well-known Θ loading parameter was modified by replacing the combustor inlet temperature with the flame temperature. The flame temperature was defined as the stoichiometric temperature of the steam/air mixture. The combustion efficiency obtained with and without steam correlated nicely with this modified loading parameter. Calculated NOX levels agreed well with the measurements, where NOX was predicted using the flamelet technique. This approach makes it possible to predict combustor efficiencies with steam by using combustor performance data taken without steam. Preliminary design analyses of gas turbine cycles with significant steam addition can now easily include the impact of the steam on combustor performance.

Copyright © 2002 by ASME

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