ANALYSIS OF THE INFLUENCE OF DESIGN PARAMETERS ON ENERGY CONSUMPTION IN A HEAT AND MASS TRANSFER APPARATUS WITH A REGULAR ROTATING NOZZLE

The use of known designs of irregular and regular stationary nozzles, movable and regularly movable nozzles has been analyzed, their shortcomings have been identified and ways of their modernization have been established. An experimental study of the hydraulic resistance of a packed layer with rotating packed elements with rectangular blades was carried out when changing the location steps in the vertical and radial directions. It is noted that when changing the vertical step, it is possible to achieve an in-phase regime, characterized by an increase in the power of the formed vortices, which has a beneficial effect on achieving a highly developed interphase surface and the efficiency of the processes being carried out. The presence of a critical step is confirmed when the distances between adjacent packings in the same row in the radial direction change, at which a restructuring of the vortex formation mechanism occurs. The frequency of vortex formation before the critical step is determined by the size of the gap between adjacent packed elements in a row, and after it by the width of the streamlined elements. An equation has been obtained for calculating the hydraulic resistance of an apparatus with rotating packed elements with rectangular blades, which takes into account the processes of formation and interaction of vortices behind the packed elements and characterizes the energy consumption in the heat and mass transfer apparatus.