TUBULAR HEAT EXCHANGER Russian patent published in 1994 - IPC

FIELD: heat exchange apparatus. SUBSTANCE: tubular heat exchanger has tube bunch of larger and lesser diameters with heat-transfer medium flowing transversely. Heat exchanger has also headers 2 with tube sheets common for tubes of larger and smaller diameters. Tubes of larger diameter are arranged in tube bunch by vertices of polygon or by vertices of equilateral triangle. Tubes of lesser diameter are arranged on intersection of diagonals of polygon or bisectors of triangle of layout of tubes of larger diameter. EFFECT: enhanced efficiency of heat exchange, reduced mass, reduced usage of metals and reduced overall dimensions of heat exchanger. 3 dwg