Low NOx Combustion by a Cyclone-Jet Combustor

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  • ONUMA Yoshiaki
    Department of Mechanical Engineering, Toyohashi University of Technology
  • YAMAUCHI Taku
    Department of Mechanical Engineering, Toyohashi University of Technology
  • MAWATARI Masayuki
    Department of Mechanical Engineering, Toyohashi University of Technology
  • MORIKAWA Masaharu
    Department of Mechanical Engineering, Toyohashi University of Technology
  • NODA Susumu
    Department of Mechanical Engineering, Toyohashi University of Technology

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Abstract

For achieving a stable premixed combustion, there is a device termed the cyclone combustor, which consists of a cylindrical chamber and fuel nozzles installed tangentially on the sidewall. In this combustor an extremely stable flame can be obtained in the swirl flow, formed along the inner wall of the combustor. The authors utilized this combustor as a flame holder, to burn a high velocity jet flowing axially in the central part, and termed this new combustor a cyclone-jet combustor. In the present study, an excellent flame stability is shown for the cyclone-jet combustor and, by comparing premixed, non-premixed and partially premixed flames, the low NOx combustion characteristics were experimentally examined for this combustor.

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