B-14 200W級ガスタービン用希薄予混合プロパン燃焼器の燃焼特性に及ぼす予混合気2次噴射の影響(燃焼・燃焼器II,一般講演)

概要

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For the purpose to develop a propane-fueled micro combustor with high combustion efficiency and low NOx emission for 200-W output micro gas turbines, a cannular-type lean-premixture micro combustor was build. A partially premixed pilot flame was set up on the center axis to stabilize a lean-premixture main flame. In addition, secondary premixture was injected into the combustor from the combustor wall to improve the combustion efficiency and the NOx emission. Flame stability limits, exit temperature distributions and exhaust CO and NOx emissions were measured by varying the following parameters: the overall equivalence ratio, and the equivalence ratio and injection velocity of the secondary premixture. The flame stability region satisfied the design operation region of the combustor, and at the overall equivalence ratio of 0.45-0.55, the combustion efficiency and NOx emission achieved were more than 99.5 % and less than 17 ppm, respectively.
公益社団法人日本ガスタービン学会の論文
2006-10-01