The influence of thermal radiation on drying of single droplet/wet particle

A literature review shows lack of the detailed research and discovers contradictions regarding influence of thermal radiation on the drying process of a single droplet, containing solids. The present study shows that for droplet initial diameters <0.25mm and ambient temperatures <750 degrees C, as like as for diameters <2.5mm and ambient temperatures up to 200 degrees C, the effect of thermal radiation is negligible. At the same time, for droplets with initial diameter greater than 0.5mm and temperatures of the drying agent higher than 400 degrees C, thermal radiation plays a substantial part in the drying process.