Single-injector high-pressure rig evaluation of the prototype Parker macrolaminate dual fuel premixer (previously tested at NETL, Mansour et al., 2001) with pressure swirl macrolaminate atomizers was conducted under simulated engine operating conditions running on No. 2 diesel fuel (DF2). Emissions, oscillations and lean blowout (LBO) performance on liquid fuel at high, part and no load operating points (pressures of 160, 100, 120 psig, and inlet temperatures of 690, 570, 590°F, respectively) and various pressure drops (ΔP/P) and air fuel ratio conditions were investigated. The results indicate that the Parker premixer design has the potential to reduce the DF2 emission to below 15 ppmv, At simulated high load conditions with a nominal flame temperature of 2700°F, the and CO emissions are approximately 10 and 2.5 ppmv at respectively. These results have not been corrected for fuel bound nitrogen (FBN). From the studies of Lee (2000), small amounts of FBN in the liquid fuel generally are completely converted over to fuel under lean premixed conditions. The fuel tested has a nominal 60 ppmw of FBN which converts to an estimated fuel of 4 ppmv at These results compare extremely favorable to existing commercially available premixer technologies tested under similar rig operating conditions. More importantly, the yield for the Parker Macrolaminate premixer appears to be independent of operating conditions (from high to no load and various pressure drop conditions). Variations in combustor pressure, inlet temperature and residence time (τ) or pressure drop (ΔP/P) does not seem to have an effect on the formation of According to Leonard and Stegmaier (1993), insensitivity of formation to operating conditions is a good indication of high degree of premixing. Additionally, the premixer data is only 1 to 2 ppmv higher than the jet stirred reactor (JSR) results (ran at and with similar DF2) of Lee et al. (2001) further confirming the quality of premixing achieved. Combustion driven oscillations was not investigated by tuning the rig so that oscillations would not be a factor.
Emissions Performance of the Parker Macrolaminate Premixer Tested Under Simulated Engine Conditions
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, Atlanta, GA, June 16–19, 2003, Paper No. 2003-GT-38010. Manuscript received by IGTI, October 2002, final revision, March 2003. Associate Editor: H. R. Simmons.
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Mansour , A., and Benjamin, M. A. (August 11, 2004). "Emissions Performance of the Parker Macrolaminate Premixer Tested Under Simulated Engine Conditions ." ASME. J. Eng. Gas Turbines Power. July 2004; 126(3): 465–471. https://doi.org/10.1115/1.1762907
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