SHELL-AND-TUBE HEAT EXCHANGER Russian patent published in 2013 - IPC F28D7/16 F28F13/08 

FIELD: heating.

SUBSTANCE: shell-and-tube heat exchanger includes a tube bank of variable cross section with alternating coaxial cylindrical sections which are equal as to length and have two different diameters, and divergent and convergent conical sections with optimum opening angles of the diffuser and the confuser, which connect them, and headers with tube sheets. Tubes of the bank have opposite periodic sequence of alternation of conical-and-cylindrical sections relative to each other under conditions of their longitudinal and transverse streamlining. Tubes with straight end sections of similar diameter are located in opposite vertexes of a rectangular of breakdown at in-line arrangement or in vertexes at the triangle base of breakdown of tube sheets at in-line arrangement of the tube bank.

EFFECT: improving heat transfer efficiency of tubular surface; reducing the weight and metal consumption at reduction of overall dimensions of the heat exchanger.

7 dwg