Last edited by Nikoll
Saturday, August 1, 2020 | History

2 edition of Effect of ambient conditions on the emissions from a gas turbine combustor found in the catalog.

Effect of ambient conditions on the emissions from a gas turbine combustor

C. W Kauffman

Effect of ambient conditions on the emissions from a gas turbine combustor

by C. W Kauffman

  • 288 Want to read
  • 24 Currently reading

Published by National Aeronautics and Space Administration, Scientific and Technical Information Branch, For sale by the National Technical Information Service] in Washington, D.C, [Springfield, Va .
Written in English

    Subjects:
  • Gas-turbines -- Combustion -- Testing -- Mathematical models,
  • Carbon monoxide,
  • Hydrocarbons

  • Edition Notes

    StatementC.W. Kauffman
    SeriesNASA contractor report -- 3355
    ContributionsUnited States. National Aeronautics and Space Administration. Scientific and Technical Information Branch, Lewis Research Center
    The Physical Object
    Paginationiii, 103 p. :
    Number of Pages103
    ID Numbers
    Open LibraryOL14930612M

    Figure 1 - Effect of ambient temperature on gas turbine performance. Rahman et. al () - Thermodynamic performance analysis of gas-turbine power-plant. De Sa & Zubaidy () proposed an empirical relationship for a MW gas turbine. This gives us a rough rule of thumb of a 1% efficiency reduction and 5% reduction in output for every mates of existing gas turbine exhaust emissions as well as emissions estimates for numerous gas turbine modifications and uprates. (For site-specific emissions values, customers should con-tact GE.) Additionally, the effects of emission control methods are provided for gas turbine cycle performance and recommended turbine inspection intervals.

    Results are presented on the role of hydrogen enrichment to methane (4–15% by mass, 25–% by volume) on the combustion characteristics under fuel-lean conditions. CO emission was. The United States federal new source performance standards (NSPS) for stationary gas turbines contain NO x limits that are standardized based on the International Standards Organization (ISO) standard for ambient conditions. The measured NO x emissions from stationary gas turbines at test conditions are to be corrected to ISO standard ambient conditions using a .

    in the turbine. Emissions of sulfur compounds, mainly SO2, are directly related to the sulfur content of the fuel. Available emissions data indicate that the turbine’s operating load has a considerable effect on the resulting emission levels. Gas turbines are typically operated at high loads (greater than or equal to These observations prompted this study of the effects of ambient conditions and fuel composition on combustion stability. Tests are conducted on a sub-scale combustor burning natural gas, propane, and some hydrogen/hydrocarbon mixtures. A premix, swirl-stabilized fuel nozzle typical of industrial gas turbines is used.


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Effect of ambient conditions on the emissions from a gas turbine combustor by C. W Kauffman Download PDF EPUB FB2

The correction factors, which vary with engine rated pressure ratio for NOx and idle pressure ratio for HC and CO, can be applied to a wide range of current technology gas turbine engines.

The factors are a function of only the combustor inlet temperature and ambient by: 4. Effect of ambient conditions on the emissions from a gas turbine combustor / Bibliographic Details; Main Author: Kauffman, C. (Author) If your book is not available on E-ZBorrow, you can request it through ILLiad (ebooks unavailable).

a Effect of ambient conditions on the emissions from a gas turbine combustor /. Get this from a library. Effect of ambient conditions on the emissions from a gas turbine combustor.

[C W Kauffman; United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch.; Lewis Research Center.; University of Cincinnati.]. THE EFFECT OF FUEL SPRAYS ON EMISSIONS FROM A GAS TURBINE COMBUSTOR J.A. Nicholls*, C.W. KaUffman* D.G. Pelaccio*, D.R.

Glass,* and J.F. Driscoll* Gas Dynamics Laboratories Department of ~erospace Engineering The University of Michigan Ann Arbor, Michigan Abstract 1n this program,aresearchgasturbinecombustor.

The effect of ambient relative humidity on gas turbine idle emissions was ascertained. Experimentally, a nonvitiating combustor rig was employed to simulate changing combustor inlet conditions as generated by changing ambient conditions. Emissions measurements were made at the combustor : C.

Kauffman. Nitrogen oxides and carbon monoxide are primary pollutant emissions formed during the combustion of hydrocarbon fuels in gas turbine engines. Emissions of UHC and PM can also be an issue in gas turbines that operate in non-premixed combustion mode, such as aircraft engines.

The effect of ambient conditions on the emissions of an idling gas turbine. By A. Subramanian, D. Rogers, R. Claus and C. Kauffman. Abstract.

Changes in ambient conditions - pressure, temperature, and humidity - affect the exhaust emissions of a gas turbine engine. Such variations must be compensated for during engine certification. The effect of ambient conditions on the emissions of an idling gas turbine. KAUFFMAN; 16th Aerospace Sciences Meeting August The effect of the fuel change from petroleum kerosene to HEFA alternative jet fuel on the number of nvPM emission of an RQL gas turbine combustor.

The gas turbine combustor needs to provide a safe, reliable and efficient operation across all engine conditions including transient events such as large load changes, startup, and shutdown.

Combustor operability issues that arise from the combustion reactions and fuel–air interactions can inhibit engine operability. The effect of fuel–air unmixedness on NOx emissions from industrial lean premixed gas turbine burners fueled with natural gas is analyzed in the pressure range from 1 to 30 bar.

A series of tests have been carried out using a single segment of a tuboannular, aircraft-type, gas turbine combustion chamber to investigate the influences of operating conditions and fuel injection method on exhaust emissions.

The test range included pressures up to psia and inlet air temperatures from to °K ( to °R). This eBook is Gas Turbine Combustion_Alternative Fuels and Emissions, 3rd_(Arthur H. Lefebvre, Dilip R. Ballal).pdf pages: Gas Turbine Combustors.

Gas turbine combustors have much smaller residence times than this and a 1m long combustor with a 25m/s reference velocity at K has a residence time at K of 15ms, and normally combustors are shorter than this so residence times are usually.

10ms, as discussed in more detail later. From: Modern Gas Turbine Systems, The results suggest that ambient air temperature is negatively correlated with thrust and pressure ratios, whereas it is positively correlated with exhaust-gas and combustor. Laboratory and engine field testing have shown that instability regimes can vary with environmental conditions.

These observations prompted this study of the effects of ambient conditions and fuel composition on combustion stability. Tests are conducted on a sub-scale combustor burning natural gas, propane, and some hydrogen/hydrocarbon mixtures.

This is shown to vary with ambient temperatures, in favour of lower temperatures when the combustor inlet pressures are higher. The emission models applied were based on empirical correlations and shows that higher combustor inlet pressures, high but constant flame temperatures with core flow reduction is crucial to obtaining a low environmentally compliant.

The Effect of a Sample Lot of Fuel JECTORS on Emissions Levels of a Small Gas Turbine George Opdyke, Jr. After correction for ambient and operating conditions. the standard deviation in the EPA parameter for hydrocarbons was about 30 percent of the average value and 15 percent of the average value for carbon monoxide.

Fuel Molecular. DLN combustors control a complex interaction of multiple combustor stages, changing ambient conditions, stability limits, emissions and dynamics. Sequencing of various combustor stages as a CT goes from startup to full load keeps velocities and combustion temperatures within tight ranges.

They note that the change in emissions performance resulting from the influence of ambient pressure on the combustor intake pressure (P3 in Figure I-3) is not as significant as the effect of ambient temperature on the combustor inlet pressure (T3).

Gas turbine engines are optimized for operation at cruise power, so when they are operating at. Gas Turbine Fuel and Emission. operation across a wide range of loads and ambient conditions. It is also important to determine and understand the products of combustion and impact on the.

In order to further extend the turbine fuel flex capability, a test under atmospheric conditions of a full-scale SGT burner was performed to study the combustion behavior when operating on hydrogen enriched natural gas. A high speed camera was installed in the rig to investigate the flame dynamics on different operation conditions.combustor to combustor.

The details of water injection are important in determining the overall effect. Water addition has the net influence of decreasing the final combustor tem-perature (compare Figures 1 and 2).

Approximately 30 kcal are required to vaporize and heat 1 mole of water from standard ambient conditions to the combustor peak.The exhaust smoke of a gas turbine engine is the result of finely divided soot particles production in fuel-rich regions of the flame.

Inadequate mixing is the cause of smoke production in any part of the combustion zone. When pressure atomizers are used, the main soot-forming region is inside the fuel spray close to the centre of the combustor.