遡上スワールにより形成された循環流領域を持つマイクロガスタービン用燃焼器の燃焼特性(熱工学,内燃機関,動力など)

概要

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The combustion characteristics of a prototype micro-gasturbine combustor fueled by kerosene were investigated. In order to enhance the recirculation in a primary combustion zone, a swirler was set between the primary and secondary combustion zones. Primary combustion air was introduced through the swirler and forced to flow upward to the combustor bottom, from where the fuel spray was supplied through a nozzle. The fundamental combustion characteristics such as lean combustion limit, flame luminosity etc. showed that this prototype combustor had a high potential for lean combustion and wide flame holding. Since a strong forced recirculation flow was induced by the upward swirl, lean and non-luminous flame was maintained in the primary combustion zone. Further, burned gas recirculation and highly turbulent shear flow in the primary combustion zone, both of which were caused by the upward swirl, resulted the low NO_x emission characteristics.
一般社団法人日本機械学会の論文
2005-03-25