1932 旋回流を利用した希薄予混合燃焼器におけるガス燃料の混合過程に関する研究(G06-7 燃焼(3),G06 熱工学)

概要

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In land-based gas-turbine engines, the increasing of NO_x emissions has become a major problem. One of the most promising approaches to reduce NO_x emissions is based on the adoption of lean premixed combustion. And then, it is needed to mix air with gaseous fuel rapidly and homogeneously in order to achieve lean premixed combustion. This study is aiming to clarify factors that have influence on the mixing process of gaseous fuel with air. In this paper, we examined the mixing process in Lean Premix Combustor with Swirling Flow by two different types of nozzles which have a different number of holes. The mixing characteristics of the tested nozzles were evaluated by measuring the instantaneous concentration of non-reactive fields of mixed gaseous fuel using planar laser-induced fluorescence (LIF). Then we measured NO_x emissions in each tested nozzles, and investigated correlation between mixing quality in non-reactive fields and NO_x emissions in reactive field.
2007-09-07