2204 UMGT 用超小型燃焼器内の火炎挙動について  [in Japanese] Flame behavior in a micro-combustor for UMGT  [in Japanese]

A prototype Flat-Flame micro-combustor based on the considerations of the problems due to downsizing a combustor has been built and stable flat-flames of premixed hydrogen/air formed within the combustion chamber volume of 0.067 [(cm)^3]. Its stable flame region was enough wide to satisfy the design operation region of power-output of 16 [W]. Flame behavior was observed with an image intensifier and temperature distributions were measured in detail with a fine thermocouple. Although heat losses were remarkable, at the equivalence ratios of over 0.4,the maximum temperatures achieved the adiabatic flame temperatures and the combustion efficiencies achieved more than 99.2[%].