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Numerical predictions of NOx in a swirl burner operating with partially premixed fuel jet
U. S.Premananda Shet,
Published in Combustion Institute
2009
Abstract
This paper presents numerical results on the performance characteristics of a swirl burner operating with partially premixed LPG-air jet flames. Commercial CFD code FLUENT is used to analyse the effect of partial premixing of fuel jet with air on NOx, CO2 and CO emissions. For a given combustion-air swirl intensity, the fuel-jet percentage primary aeration (%PA) is varied from zero to 45% for the burner operating with 1.0 m3/h of fuel flow rate and stoichiometric amount of swirl-air. The results obtained show that NOx level increases with % PA and reaches a constant maximum value over %PA from 35 to 45%. The CO level also increases gradually, reaches a maximum and then decreases to reach a plateau. These observations suggest that NOx and CO emissions can be controlled optimally by adjusting partial premixing of the fuel jet. © 2009 Combustion Institute. All rights reserved.
About the journal
Journal7th Asia-Pacific Conference on Combustion, ASPACC 2009
PublisherCombustion Institute
Open AccessNo
Concepts (14)
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    Combustion
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    Computational fluid dynamics
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    GAS BURNERS
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    Liquefied petroleum gas
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    Nitrogen oxides
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    Fuel flow rates
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    NOX AND CO EMISSION
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    Numerical predictions
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    Numerical results
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    PARTIAL PREMIXING
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    PARTIALLY-PREMIXED
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    Performance characteristics
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    SWIRL INTENSITY
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    Fuels