The direct shadow photography method was applied for study of the size distribution of droplets produced in liquid fuel atomization by a high-speed jet of superheated steam. This approach for fuel spraying allows eliminating the clogging of fuel lines and atomizers used for combustion of substandard liquid hydrocarbons. The setup has a long-focus microscope lens with optical magnification 7:1; this allows measuring the particles with the size starting from 1 µm. Experiments revealed that the prevailing size of droplets in the fuel spray is 1–2 µm.

中文翻译：

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高速蒸汽喷射液体燃料

直接阴影摄影法被用于研究由过热蒸汽的高速射流在液体燃料雾化中产生的液滴的尺寸分布。这种用于燃料喷射的方法可以消除用于燃烧次标准液态烃的燃料管线和雾化器的堵塞。该装置具有一个长焦显微镜镜头，其光学放大率为7：1；这样就可以测量尺寸从1 µm开始的颗粒。实验表明，燃油喷雾中液滴的主要尺寸为1-2 µm。