HEAT EXCHANGER Russian patent published in 2010 - IPC F28D7/00 F28D7/10 

FIELD: heating.

SUBSTANCE: heat exchanger consists of sections of concentric tubes; each section is made in the form of independent unit, and concentrically located tubes of units are connected so that central (odd) tube of the first unit is connected to central (odd) tube of the second unit, which in its turn is connected to the next tube of the first unit, located in odd order of tube location from the centre, etc; even tube of the second unit, which envelopes its central tube, connected to even tube of the first unit, which is located above central (odd) tube, etc; outer surface of each tube is equipped with screw ribs continued in its end sections into guides of the flow; reducers are secured against longitudinal movement with spacing rings located on tubes and equipped with self-sealing packing.

EFFECT: increasing heat transfer factor from heat carrier to heat receiver, decreasing overall dimensions and metal consumption.

11 dwg