HEAT EXCHANGE TUBE Russian patent published in 2016 - IPC F28F1/42 

FIELD: heat exchange.

SUBSTANCE: invention relates to heat engineering and can be used in heat exchangers. In heat exchange tube with rounded grooves on outer surface and corresponding rounded protrusions with height h on inner surface, which are applied with pitch S, rounded recesses on outer surface and corresponding rounded protrusions on inner surface have angular size equal to 90°, and are located on opposite sides of pipe, wherein rounded protrusions and recesses turned at 90° are applied with pitch S/2, wherein pipe is made with geometrical ratios: S=1∗D, h=0.1∗D, where S is spacing between rounded recesses, mm; h is height of rounded protrusion, mm; D is outer diameter of heat exchange tube, mm.

EFFECT: reduced power consumption for pumping heat carrier due to reduced hydraulic resistance, as well as high strength and reliability of pipe.

1 cl, 2 dwg