A-13 ガスタービン燃焼器小型化の燃焼特性への影響(燃焼・燃焼器IV,一般講演)

概要

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Gas turbines have recently been downsized to be used for decentralized power generation, and therefore combustors used in gas turbines have also been downsized. In order to know and to make quantitative analysis on factors that affect combustion characteristics with down-sizing of combustors, numerical simulation as well as experimental investigations using a annular swirl flow-type combustor model were conducted for various combustion load, chamber length, heat loss and non-premixed combustion. Obtained remarks are as follows. The increase in relative heat loss lowers combustion efficiency. Incase of non-premixed combustion, difference in equivalence ratio does not affect the rate of reduction in combustion efficiency with increase in relative heat loss. However, the rate of reduction in combustion efficiency is larger compared to premixed combustion. Reduction of residence time due to increase of combustion load lowers combustion efficiency. The more heat loss increase, the more decreasing rate of combustion efficiency increases.
社団法人日本ガスタービン学会の論文
2004-10-01