HEAT EXCHANGER PIPE AND HEATING BOILER THAT HAS THIS TUBE OF THE HEAT EXCHANGER Russian patent published in 2018 - IPC F24H1/00 F28D7/10 F22B9/02 F28F1/10 

FIELD: heat engineering.

SUBSTANCE: invention relates to heat engineering and can be employed in heating boilers. tube (5) of heat exchanger of boiler (2), which has outer tube (10), through which the combustion gases of boiler can flow, and which may be surrounded on the outside by heating water, and profile insert (11) inserted into outer tube, which, to increase the inner surface of outer tube (10), has ribs (14) extending in its longitudinal direction (12), and is in thermally conductive contact with outer tube (10), the first longitudinal section (22) of outer tube (10) is made in the form of a smooth-bore cylinder and the second longitudinal section (23) of outer tube (10) has at least one element (24) for narrowing the cross section, narrowing the flow cross section, wherein profile insert (11) extends exclusively along the first longitudinal section (22) of outer tube (10).

EFFECT: increase of the heat transfer power of the combustion gases to the heating water in the boiler.

15 cl, 13 dwg