Hydrodynamics and heat transfer on disk atomizer

Experimental studies of new disk atomizers designed for water cooling by atmospheric air are carried out. Criterion equations for calculation of hydrodynamic and heat transfer characteristics of atomizers were obtained: radius, height and volume of atomizing torch, volumetric heat transfer coefficient. Efficiency of atomization on a disk with beads (disk No. 3) is greater than the volume of atomizing torch on a flat disk (disk № 1) in the whole investigated range of criteria Re and Kn. The conditions under which the atomizing disk with nozzles (disk No. 2) provides the most effective atomization of liquid and high intensity of heat transfer have been established. At Kn = 50 the critical value of Reynolds criterion will be Re = 277. The diagram for graphical determination of the area of values of criteria Re and Kn, in which the heat transfer intensity on disk No. 2 is higher than on disk No. 1, is proposed.