Control and Reduction of Aircraft Turbine Engine Exhaust Emissions

Bahr, D. W.

doi:10.1007/978-1-4684-1998-6_20

Cited by 14 publications

(7 citation statements)

References 1 publication

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“…Thus, in continuous flow combustors burning liquid fuels, more NO is formed than would be expected from calculations of adiabatic flame temperatures based on the overall fuel/air ratio in the combustion zone. For these reasons, technology for the control and reduction of NO emissions from gas turbine combustors have tended to focus on means for reducing flame temperatures and eliminating fuel droplet combustion (Mularz et al, 1979, and Bahr, 1972, 1973.…”

Section: Introductionmentioning

confidence: 99%

The Influences of Fuel Composition and Spray Characteristics on Nitric Oxide Formation

Rink¹,

Lefebvre²

1989

Combustion Science and Technology

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Measurements of nitric oxide emissions are carried out on a continuous flow combustor when operating over wide ranges of fuel/air ratio at pressures up to 1.52 MPa (15 atmos.). Fuel is supplied to the flame zone from a circular array of 30 equispaced miniature airblast atomizers which is incorporated into a perforated-plate flarneholder. Standard instrumentation and sampling techniques are used to measure pollutant emissions over wide ranges of mean fuel drop size. The results obtained with several selected fuels demonstrate the effects of variations in fuel composition, fuel drop size, and combustor operating conditions on nitric oxide emissions,

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Section: Introductionmentioning

confidence: 99%

The Influences of Fuel Composition and Spray Characteristics on Nitric Oxide Formation

Rink¹,

Lefebvre²

1989

Combustion Science and Technology

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“…The CO concentrations were always practically zero; in this way, the obtained values are not presented here. Besides, as the CO levels were very low, it is reasonable to assume that the UHC concentrations will also be very low because these two pollutants possess the same tendency of formation [23]. The results are presented in Fig.…”

Section: Methodsmentioning

confidence: 92%

Thermal analysis of an enriched flame incinerator for aqueous residues

Lacava

Carvalho²,

Pimenta

et al. 2006

Energy

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“…In general, UHC emissions parallel those of CO. Any combustor design modification that decreases CO emissions will also decrease UHC emissions. emissions relationship developed by Bahr (1972) Loading Parameter (g-mol/sec L atm°) Fig. 6: WSR combustion efficiency vs. loading parameter for two fuels.…”

Section: )mentioning

confidence: 99%

Combustor Stability and Emissions Research Using a Well Stirred Reactor

Zelina

Ballal

1995

Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations

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The design and development of low-emissions, lean premixed aero or industrial gas turbine combustors is very challenging because it entails many compromises. To satisfy the projected CO and NOx emissions regulations without relaxing the conflicting requirements of combustion stability, efficiency, pattern factor, relight (for aero combustor) or off-peak loading (for industrial combustor) capability demands great design ingenuity. The well stirred reactor (WSR) provides a laboratory idealization of an efficient and highly compact advanced combustion system of the future that is capable of yielding global kinetics of value to the combustor designers. In this paper, we have studied the combustion performance and emissions using a toroidal WSR. It was found that the toroidal WSR was capable of peak loading almost twice as high as that for a spherical WSR and also yielded a better fuel-lean performance. A simple analysis based upon WSR theory provided good predictions of the WSR lean blowout limits. The WSR combustion efficiency was 99 percent over a wide range of mixture ratios and reactor loading. CO emissions reached a minimum at a flame temperature of 1600K and NOx increased rapidly with an increase in flame temperature, moderately with increasing residence time, and peaked at or slightly on the fuel-lean side of the stoichiometric equivalence ratio. Finally, emissions maps of different combustors were plotted and showed that the WSR has the characteristics of an idealized high efficiency, low emissions combustor of the future.

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Control and Reduction of Aircraft Turbine Engine Exhaust Emissions

Cited by 14 publications

References 1 publication

The Influences of Fuel Composition and Spray Characteristics on Nitric Oxide Formation

The Influences of Fuel Composition and Spray Characteristics on Nitric Oxide Formation

Thermal analysis of an enriched flame incinerator for aqueous residues

Combustor Stability and Emissions Research Using a Well Stirred Reactor

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