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- W2002092089 abstract "To investigate the potential of using the lean combustion concept to significantly reduce the emission of NO x from gas turbine combustors, a data analysis was conducted. The combustor tested comprises a prechamber in which the fuel is vaporized and mixed with air, pilot chamber, and main combustion chamber. A variable geometry feature is used to closely control the stoichiometry in the primary combustion zone to stay within the required operating limits. The combustor operating conditions used in the tests cover ranges of 1000 to 1200 K, and 0.004 to 0.01 for air inlet temperature and overall fuel/air ratio, respectively. The testing of the combustor showed that the NO x formation is sensitive to the variablegeometry position that determines the air flow split between the primary and dilution zones. An expression based on residence time and reaction rates in the combustion zones was derived to define the range of operation that gives acceptable NO x for future applications. The calculated overall NO x emissions, that combine the contributions from both the pilot and the main chambers agree well with the data. The details of the combustor flow field that directly impact the NO x formation were examined using a 3-D combustor performance model. This model combines the finite volume computations with empirical expressions. By this means, optimum operating parameters for minimum NO x emissions and satisfactory performance at all power modes, could be defined." @default.
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- W2002092089 date "1991-01-01" @default.
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- W2002092089 title "Lean low NOx combustion concept evaluation" @default.
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- W2002092089 doi "https://doi.org/10.1016/s0082-0784(06)80365-6" @default.
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