A Simple Gas Turbine Combustor NOx Correlation Including the Effect of Vitiated Air

[+] Author and Article Information
D. A. Sullivan

General Electric Co., Schenectady, N. Y.

J. Eng. Power 99(2), 145-152 (Apr 01, 1977) (8 pages) doi:10.1115/1.3446260 History: Received November 14, 1975; Online July 14, 2010


A set of parametric laboratory tests are used to develop a simple NOx correlation. The correlation is then compared with over 100 data points from various gas turbines operating on liquid and gaseous fuels. The correlation agrees well with constant speed simple cycle and regenerative cycle NOx data. The effect of vitiated air on NOx emissions is also determined from full scale laboratory tests and machine data. The NOx correlation with vitiated air is used to demonstrate the NOx emissions from two combustors operated in series with a variable fuel flow split between them. The nonlinear effect of fuel-to-air ratio on NOx production is shown to be responsible for the NOx reduction which occurs when two combustors are operated in series as opposed to single combustor operation.

Copyright © 1977 by ASME
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