A-5 UMGT用予混合火炎旋回型燃焼器の熱・燃焼特性評価(燃焼・燃焼器II,一般講演)

概要

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For the purpose to evaluate thermal and combustion characteristics of swirling premixed-flame ultra-micro combustor for 50 W output UMGT, a swirling premixed-flame ultra-micro combustor of hydrogen/air with variable height (h=1, 2, 4mm) was fabricated and tested. For h=2 and 4mm, their excellent combustion performance was confirmed. For h=1mm, although a swirling premixed-flame can formed in the combustion chamber, the flame stability was not enough wide to satisfy the design operative region. The combustion efficiencies of the swirling premixed-flame ultra-micro combustor achieved were more than 99.95% at the equivalence ratios of over 0.39. Heat loss ratios evaluated from the maximum temperatures at the exhaust slit were about 16% for h=1mm and 31% for h=2mm at the design point.
社団法人日本ガスタービン学会の論文
2005-09-01