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- W2335305887 abstract "This paper describes a novel Stagnation Point Reverse Flow (SPRF) combustor concept that can burn gaseous or liquid fuels in premixed or non-premixed modes of combustion with ultra low NOx emissions. The combustor consists of a tube with open and closed ends. Contrary to most combustors, the reactants and products enter and leave this combustor at the same (open) end. In the investigated configuration, the reactants are injected along the combustor center line, moving towards the closed end, where the flow velocity must be zero. This creates a low velocity region towards the closed end of the combustor that helps stabilize the combustion process. Furthermore, the presence of a closed end forces the generated combustion products and burning gas pockets to reverse their flow direction and move towards the open (exhaust) end of the combustor. Thus, a portion of the hot products, laden with radicals, are entrained back into the incoming reactants to form a more chemically reactive mixture. The presence of radicals in the mixture lowers its ignition temperature and, thus, the lean blowout limit of the combustor. Thus, the SPRF combustor’s geometry produces a combination of stagnation and reverse flow entrainment that allows this combustor to operate stably at very low temperatures with ultra low NOx emission in the 1 ppm range and below. It is also shown that these low NOx emissions can be attained with premixed or non-premixed modes of combustion. Finally, it is shown that the developed combustor can operate with high combustion intensities, in the 30-40 MW/m range at atmospheric pressure, without experiencing combustion instabilities." @default.
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- W2335305887 date "2005-07-10" @default.
- W2335305887 modified "2023-09-26" @default.
- W2335305887 title "Ultra Low Emissions Combustor with Non-Premixed Reactants Injection" @default.
- W2335305887 cites W2139072258 @default.
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- W2335305887 doi "https://doi.org/10.2514/6.2005-3775" @default.
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