SHELL-AND-TUBE HEAT EXCHANGER Russian patent published in 1997 - IPC

FIELD: chemical, power and other industries. SUBSTANCE: shell 1 is provided with outlet and inlet branch pipes 2 for inter-tube medium and sections-bundles 3 of heat-exchange tubes 5; each tube has autonomous inlet 6 and autonomous outlet 9 for tube medium; tubes are secured in wall of shell 1 on one side. Tubes 5 have their own varying pitch in section-bundle 3 which gradually reduces in way of motion of intertube medium flow both inside separate section 3 and from section to section. EFFECT: smooth heat exchange over entire surface of tube bundle and enhanced operational efficiency. 2 cl, 2 dwg