A-8 プロパンを燃料とする超小型ガスタービン用アニュラー型燃焼器の着火特性(マイクロガスタービン・燃焼器,一般講演)

概要

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An annular-type propane-fueled combustor for a several hundreds W-class micro gas turbine was developed. A lean-premixed combustion method was applied to realize low NOx emission and the volume of combustion chamber is 50cm3 with the space heating ratio of 800MW/(m^3・MPa). The ignition characteristic for open-type and closed-type combustor was investigated. A spark type igniter was installed at the side or bottom wall of the primary region of the combustor. At a small amount of air mass flow, it was possible to ignite at the equivalence ratio of 0.51 or less. In the case of the bottom, the ignition performance was superior to that in the case of the side and the influence of the igniter location on the flame stability was less than the side location. However, when the turbine nozzle was installed at the combustion chamber exit, the ignition performance and the flame stability decreased extremely.
2009-10-21