HEAT EXCHANGE TUBE Russian patent published in 2014 - IPC F28F1/10 F28F13/02 

FIELD: heating.

SUBSTANCE: in a heat exchange tube, the channel of which has projections and grooves, according to the proposed invention, the channel is formed with plain tube sections and narrow grooves with geometrical ratios: h/D=0.1, (t-l)/h=1, l/h<(3-5) where h - projection height, mm, D - inner diameter of the heat exchange tube, mm, t - length of a typical section of the channel with a projection and a groove, mm, l - groove length, mm.

EFFECT: use of the proposed heat exchange tube will allow reducing consumption of energy for pumping of heat carriers through a heat exchange unit by 2,5-4 times in comparison to a plain-tube heat exchange unit owing to reducing hydraulic resistance.

4 dwg, 1 tbl