HEAT EXCHANGE TUBE Russian patent published in 1999 - IPC

FIELD: heat exchange equipment. SUBSTANCE: heat exchange tube is intended for use as member of heat exchange apparatuses, evaporators, cooling systems of power and other plants. Heat exchange tube has frame and package of porous elements. Porous elements fill tube both over length and diameter. Porosity of elements diminishes predominantly by stepped law as hot heat transfer agent flows. Each porous element is manufactured in the form of volumetric grill formed by partitions which form cells uniaxial in three orthogonal planes. Porous elements are placed tightly one to another over length and diameter of tube. They are installed in frame of heat exchange tube by simple setting or they are joined together by soldering, welding or baking in advance. Package of porous elements is attached to frame of tube with friction forces or by soldering or welding. Porous element can have cells of square or rectangular section. Porous elements with cells of round section can be manufactured by simple drilling and can also be put into tube. EFFECT: increased power of heat exchange gears, reduced hydraulic resistance. 3 cl, 5 dwg