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Accession Number:
ADA151464
Title:
Influence of Fuel Properties on Gas Turbine Combustion Performance
Descriptive Note:
Final rept. 3 Jan 1983-30 Sep 1984
Corporate Author:
PURDUE UNIV LAFAYETTE IN COMBUSTION LAB
Report Date:
1985-01-01
Pagination or Media Count:
156.0
Abstract:
Results of an analytical and experimental program to determine the effects of broad variations in fuel properties on the performance, emissions, and durability of several prominent turbojet engine combustion systems, including both turbo-annular and annular configurations, are presented. Measurements of mean drop size conducted at representative engine operating conditions are used to supplement the available experimental data on the effects of combustor design parameters, combustor operating conditions and fuel type, on combustion efficiency, lean blowout limits, lean lightoff limits,liner wall temperatures, pattern factor, and pollutant emissions. The results of the study indicate that the fuels physical properties that govern atomization quality and evaporation rates strongly affect combustion efficiency, weak extinction limits, and lean lightoff limits. The influence of fuel chemistry on these performance parameters is quite small. Analysis of the experimental data shows that fuel chemistry has a significant effect on flame emissivity, flame radiation, and liner wall temperature, but its influence on the emissions of carbon monoxide, unburned hydrocarbons, and oxides of nitrogen, is small. Smoke emissions are found to be strongly dependent on combustion pressure, primary-zone fuelair ratio, and the mode of fuel injection pressure atomization or airblast. Fuel chemistry, as indicated by hydrogen content, is also important.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
