Designers of advanced gas turbine combustors are considering lean direct injection strategies to achieve low emission levels. In the present study, the performance of a multipoint radial airblast fuel injector Lean Burn injector (LBI) is explored for various conditions that target low-power gas turbine engine operation. Reacting tests were conducted in a model can combustor at 4 and 6.6 atm, and at a dome air preheat temperature of 533 K, using Jet-A as the liquid fuel. Emissions measurements were made at equivalence ratios between 0.37 and 0.65. The pressure drop across the airblast injector holes was maintained at 3 and 7–8 percent. The results indicate that the LBI performance for the conditions considered is not sufficiently predicted by existing emissions correlations. In addition, performance is impacted by atomizing air flows, suggesting that droplet size is critical even at the expense of penetration to the wall opposite the injector. The results provide a baseline from which to optimize the performance of the LBI for low-power operation.
Rapid Liquid Fuel Mixing for Lean-Burning Combustors: Low-Power Performance
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Munich, Germany, May 8–11, 2000; Paper No. 00-GT-116. Manuscript received by IGTI Feb. 2000; final revision received by ASME Headquarters Jan. 2001. Associate Editor: M. Magnolet.
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Leong, M. Y., Smugeresky, C. S., McDonell, V. G., and Samuelsen, G. S. (January 1, 2001). "Rapid Liquid Fuel Mixing for Lean-Burning Combustors: Low-Power Performance ." ASME. J. Eng. Gas Turbines Power. July 2001; 123(3): 574–579. https://doi.org/10.1115/1.1362318
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