Combustor Concepts for Aircraft Gas Turbine Low-Power Emissions Reduction

Mularz, E. J.; Gleason, C. C.; Dodds, W. J.

doi:10.2514/3.62408

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…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

View full text Add to dashboard Cite

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,

show abstract

Section: Introductionmentioning

confidence: 99%

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

Rink¹,

Lefebvre²

1989

Combustion Science and Technology

View full text Add to dashboard Cite

show abstract

“…When the combustion efficiency decreases, the concentrations of carbon monoxide and unburned fuel increase. Therefore, air-assisted fuel nozzles have been applied to generate fine droplets [6,8], and catalysts have been used in injection systems [9].…”

Section: Introductionmentioning

confidence: 99%

One-Dimensional Analysis of Double Annular Combustor for Reducing Harmful Emissions

Jeong¹,

Ahn²

2021

Energies

View full text Add to dashboard Cite

The number of aircraft flights worldwide has increased steadily since the introduction of air transportation to the public. Accordingly, environmental issues caused by the exhaust gases of aircraft engines have emerged. In particular, international organizations have crafted emission regulations since gases exhausted during takeoff and landing have been identified as the direct cause of air pollution near airports. Nitrogen oxides (NOx) produced at high combustion temperatures and carbon monoxide (CO) due to incomplete combustion affect the performance of the combustion chamber. Therefore, annular combustors comprising two annular zones have been developed to reduce the emissions of these two substances, which occur under different conditions. Parameters that should be considered when modifying a conventional single annular (SAC) to a double annular combustor (DAC) are discussed herein. In this paper, an optimization algorithm for obtaining the main design parameters of the DAC is presented to minimize NOx and CO emissions and an operation solution for reducing carbon monoxide emission is identified. A thermodynamic model of a high-bypass turbofan engine (PS-90A) is used to establish the inlet and outlet conditions of the combustor. Analysis results show that NOx emissions can be effectively reduced by adjusting the design parameters and CO emissions can be significantly decreased by partially turning off the fuel supply based on the engine cycle.

show abstract

Atomization and vaporization characteristics of airblast fuel injection inside a venturi tube

Sun

Chue

Lai

et al. 1993

29th Joint Propulsion Conference and Exhibit

View full text Add to dashboard Cite

Combustor Concepts for Aircraft Gas Turbine Low-Power Emissions Reduction

Cited by 3 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

One-Dimensional Analysis of Double Annular Combustor for Reducing Harmful Emissions

Atomization and vaporization characteristics of airblast fuel injection inside a venturi tube

Contact Info

Product

Resources

About