FIELD: heat-exchanging column nozzles. SUBSTANCE: nozzle has layers of scalene pyramids made on planar square coordinate grid. Pyramid sides are made alternately open and closed. Like pyramids are positioned below each member on grid, with closed side surfaces of different pyramids standing on base side of grid defining planar surface. Layers formed in such a way are laid one onto the other with pyramid apexes so that surfaces joined at pyramid apexes do not define planes. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 cl, 5 dwg
