A-6 燃焼室形状を改良したUMGT用実機型プロパン燃料超小型燃焼器の燃焼特性(マイクロガスタービン・燃焼器,一般講演)

概要

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An improved engineering-model of a propane-fueled ultra-micro combustor was developed. To modify a converged flow to a stagnant flow in the combustion chamber and form a stable flat-flame, a multi-hole plate was set over the porous injector. The burning test showed that the flame stability region became wider than that of the past combustor and satisfied the design operation point of the combustor. The heat recirculation between burned gas and propane/air premixture made the flat-flame stable. Ignition was achieved with the spark plug, but the equivalence ratio of the ignition limit was higher than that of the flame stability limit. Although the combustor had large heat losses, the stable flat-flame was formed and the combustion characteristics were improved.
2009-10-21