HEAT EXCHANGER FROM HOLLOW FLAT SECTIONS Russian patent published in 2011 - IPC F28D9/00 F28F3/12 

FIELD: power industry.

SUBSTANCE: in heat exchanger with small weight and high volume conductivity, which operates with fluid media at high pressure drop and high temperatures, hollow flat sections are assembled in a pack, located at equal intervals one from the other and connected to outer headers; at that, the above flat sections include relief central section, and side edges of two walls of hollow flat section are welded; at that, walls of each hollow flat section are rigid, their relief central section has one or several rows of periodically changing convexities located on one and the same line and equipped with steep surfaces which form many sharp edges directed at an angle and/or perpendicular to the line along which the convexities are located; besides, gap between opposite surfaces is equal, known and invariable in the area of expected pressure drops.

EFFECT: possible manufacture of lighter, thinner and cheaper metal, glass or polymer heat exchangers with hollow flat sections, which have relief walls and outer headers.

12 cl, 8 dwg