VORTEX HEAT EXCHANGE ELEMENT Russian patent published in 2009 - IPC F28D7/10 

FIELD: heating systems.

SUBSTANCE: invention refers to heat engineering and can be used in heat exchangers used in various industries, namely in regenerative heat exchangers of gas turbine plants of nuclear reactor industry. Invention consists in the fact that vortex heat exchange element includes heat exchange cylindrical tubes of large diametre located coaxially one inside the other and internal tube with cylindrical surfaces; at that, tube of large diametre is divided into sections, inside each tube there installed are at least two swirlers of the same or various type; at that, one swirler - at the section inlet, and the other one - at some distance between them, which is determined by damping of rotary movement of vortex flow at complete heat loads. Besides inlet of heat carriers to each section of tube of large diametre and internal tube is made either on one and the same side or on opposite sides in relation to flow movement, thus providing both counterflow and direct-flow scheme of heat carriers movement in element, at that, internal tube with cylindrical surfaces is made from bimetal; at that, material of internal tube surface from the side of hot heat carrier has thermal conductivity factor which is 2.0-2.5 times higher than material of internal tube surface from the side of refrigerating heat carrier.

EFFECT: improving use efficiency of vortex method of heat transfer in heat exchange devices.

3 dwg