Low-Power Turbopropulsion Combustor Exhaust Emissions. Volume II. Demonstration and Total Emission Analysis and Prediction.
Final technical rept. 1 Dec 72-28 Feb 74,
PRATT AND WHITNEY AIRCRAFT WEST PALM BEACH FLA
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An exploratory development program was conducted to identify, evaluate, and demonstrate improved combustion design techniques for increasing combustion efficiency at part-power operating conditions, thereby reducing undesirable and potentially hazardous exhaust emissions. The most promising of the low-power design techniques investigated, fuel-air premixing and virtual staging, were incorporated into an annular burner configuration and a detailed experimental evaluation of the combustion system was accomplished. The burner was examined at both low-power and simulated design-point operating conditions. Relative to the part-power goals that served as guidelines for the demonstration hardware, viz. a Smoke Number less than 20, carbon monoxide concentration of 10 ppmw, total unburned hydrocarbon concentration of 10 ppmw, and combustion efficiency greater than 98, those relating to smoke, hydrocarbon concentration, and efficiency were exceeded that relating to carbon monoxide concentration was approached. A detailed, computerized, theoretical model developed earlier in the program to predict the emission characteristics of combustion systems at part power was used to support the demonstration burner program. Modified author abstract
- Jet and Gas Turbine Engines
- Air Pollution and Control