D206 出力数百W級超小型ガスタービン用プロパン燃焼器の開発(OS-1 マイクロエネルギー変換(1),一般講演,地球温暖化防止と動力エネルギー技術)

概要

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An annular-type propane-fueled micro combustor was developed for a several hundred W-class micro gas turbine. A lean-premixed combustion method was applied to realize high space heating rate and low NOx emission. To prevent the possibility of flash back when using premixture, a fuel was injected directly into the combustion chamber and formed the premixture. An orifice was located in the chamber to promote the fuel/air mixing and the flame stability. The flame stability limit showed enough wide operation regions including design point. The red heated wall was observed at some liner walls, indicating the necessity of promoting cooling air at these walls. The CO concentrations were less than 100 ppm at the equivalence ratios over 0.42. The NOx emission was around 20 ppm, which was corrected at 16% residual oxygen condition, at the design point. Accordingly the combustor attained high space heating rate of 800 MW/(m^3・MPa) and high combustion efficiency more than 99.5 %.
社団法人日本機械学会の論文
2008-06-18