石油残渣エマルジョン燃料(RWM)のミクロ爆発挙動 : 液滴の温度変化とOH, CH発光の挙動(熱工学,内燃機関,動力など)

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This paper describes the temperature changes with time and microexplosion phenomena of single droplets under specified furnace temperatures and droplet diameters for two kinds of Asphalt/Water emulsified fuels (As/W-I and As/W-J). It was observed the temperature histories with time of both fuels resembled closely each other, which was different from the experiments of thermal analysis (TG/DTA) of Ref.(6). However, the microexplosion of As/W-J occurred earlier and more intensively than those of As/W-I like Ref.(6). A theoretical approach was carried out for the single droplets by applying the analytical method for thermal analysis of Ref.(6). It can explain the experimental temperature histories before the rapid vaporization and the occurrence times of the microexplosion of the droplets. The chemiluminescence signals of OH and CH were detected for As/W-J, Pitch/Water emulsion (Pi/W) and C heavy oil. The OH signals of As/W-J with the microex-plosion fluctuated intensively at the occurrence time of the microexplosion, which was apparently different from Pi/W and C heavy oil without the microexplosion. On the other hand, the CH signals were in agreement with the luminosity of the flame and did not fluctuate intensively different from OH signals for all three fuels. Thus, the occurrence of the microexplosion can be assured by the difference between OH signal and CH signal.
社団法人日本機械学会の論文
2004-02-25