Liquid fuel spraying by a high-speed steam jet

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 mu m. Experiments revealed that the prevailing size of droplets in the fuel spray is 1-2 mu m.