HEAT EXCHANGING PIPE Russian patent published in 1995 - IPC

FIELD: heat exchanging engineering. SUBSTANCE: heat exchanging pipe has ring turbulizers-grooves 1 and answered ring turbulizers- projections 2 of smooth profile. The turbulizers are made up as two arcs: first streamwise arc 3 and second streamwise arc 4 which are conjugated at the top 5 of projection 2. The arcs have smooth parts 6 between the turbulizers. The radius of the first arc 3 is differ from the radius of the second arc 4. The optimal range of the radii is presented in the invention description. EFFECT: improved design. 2 dwg