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액체연료의 액적렬의 연소

Combustion of Liquid Fuel Droplet Array

HWAHAK KONGHAK, December 1982, 20(6), 481-490(10), NONE
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Abstract

층류 반응로를 사용하여 균일 크기의 액체 연료 입자들의 연소 현상에 관하여 연구하였다. 실험용 연료로 n-dodecane을 사용하고, 압전 소자를 이용하여 직경 180 μm의 구형 액적렬을 생성하였다.
여러 가지 반응 조건에서 그을음 생성과 발화 현상에 관한 데이터를 구하였고, 그을음 생성에 미치는 발화 현상의 영향을 관찰하였다. 발화 지연시간(τ, msec) 연료/산소 당량비(Φ), 반응기 온도(T, K) 간에 τ=(aΦ+b)eE/RT의 관계가 성립함을 실험적으로 보였고, n-dodecane의 경우 α=0.0594, b=0.3503 그리고 활성화 에너지 E=28.17 kJ/mol의 값을 얻었다.
The combustion of monosized liquid fuel droplet arrays has been studied in a well-controlled laminar flow furnace. n-dodecane is employed as the model fuel and atomized by using piezo-electric crystal into 180 μm·size droplet array. Under various operation conditions, informations on soot loading and fuel ignition have been obtained. The significant role of ignition phenomena on soot formation is observed. A more intensive study on ignition in relation to soot formation is suggested.
An empirical correlation has been obtained for the ignition delay time of the form
τ=(aΦ+b)eE/RT
where τ is the ignition delay time in msec, Φ is the equivalence ratio, R is the gas constant, and T is the ambient temperature of the combustor in K. The values for the constants α=0.0594, b=0.3503 and E=28.17 kJ/mol, for n-dodecane were derived from the experiment.

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