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    NOx emissions from high swirl turbulent spray flames with highly oxygenated fuels

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    Type
    Article
    Authors
    Bohon, Myles cc
    Roberts, William L. cc
    KAUST Department
    Clean Combustion Research Center
    Mechanical Engineering Program
    Physical Science and Engineering (PSE) Division
    high-pressure combustion (HPC) Research Group
    Date
    2013-01
    Permanent link to this record
    http://hdl.handle.net/10754/562595
    
    Metadata
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    Abstract
    Combustion of fuels with fuel bound oxygen is of interest from both a practical and a fundamental viewpoint. While a great deal of work has been done studying the effect of oxygenated additives in diesel and gasoline engines, much less has been done examining combustion characteristics of fuels with extremely high mass fractions of fuel bound oxygen. This work presents an initial investigation into the very low NOx emissions resulting from the combustion of a model, high oxygen mass fraction fuel. Glycerol was chosen as a model fuel with a fuel bound oxygen mass fraction of 52%, and was compared with emissions measured from diesel combustion at similar conditions in a high swirl turbulent spray flame. This work has shown that high fuel bound oxygen mass fractions allow for combustion at low global equivalence ratios with comparable exhaust gas temperatures due to the significantly lower concentrations of diluting nitrogen. Despite similar exhaust gas temperatures, NOx emissions from glycerol combustion were up to an order of magnitude lower than those measured using diesel fuel. This is shown to be a result not of specific burner geometry, but rather is influenced by the presence of higher oxygen and lower nitrogen concentrations at the flame front inhibiting NOx production. © 2012 The Combustion Institute.
    Citation
    Bohon, M. D., & Roberts, W. L. (2013). NOx emissions from high swirl turbulent spray flames with highly oxygenated fuels. Proceedings of the Combustion Institute, 34(1), 1705–1712. doi:10.1016/j.proci.2012.07.064
    Sponsors
    This work was supported by DOE's Office of Energy Efficiency and Renewable Energy, Grant # DE-EE003497.
    Publisher
    Elsevier BV
    Journal
    Proceedings of the Combustion Institute
    DOI
    10.1016/j.proci.2012.07.064
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.proci.2012.07.064
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

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