EFFECT OF TURBULENCE ON HEAT AND MASS-TRANSFER IN THE ATOMIZATION ZONE

One of possibilities to extend operating efficiency of spray dryers is to increase turbulence of the drying agent flow. In the literature no quantitative data describing this phenomenon are available. In the pa per results of experimental investigations on the effect of turbulence on heat and mass transfer during atomization are discussed. The scope of experiments covered the analysis of changing evaporation capacity, temperature of gas and atomized material and particle size distributi on as a function of distance to the atomizer. It was proven that an in crease of air flow turbulence could cause 20-25% increase of evaporati on capacity.