G0601-7-3 円筒状火炎の超小型燃焼器への応用(熱工学(7)燃焼(2))

概要

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A micro-combustor that was able to form the cylindrical flames of a few millimeters in the diameter was designed and developed. A cylindrical premixed flame and diffusion flame are formed by supplying rich mixture and air. The extinction limits and the temperature in the combustion chamber were measured, and the heat loss ratio and the space heating rate were evaluated. The obtained results are summarized. (1) The temperature in the combustion chamber exceeds adiabatic flame temperature corresponding to the equivalence ratio, φ_<all>, evaluated from all supplied fuel and air. (2)Even thoughφ_<all> is lower than lean flammability limits, the flame can be formed. (3)The heat loss ratio decreases as the combustion intensity increases. However, the heat loss ratio increases when equivalence ratio of rich mixture exceeds a certain value.
社団法人日本機械学会の論文
2009-09-12