Patent ID: 6736204
Filing Date: 2004-05-18
Classification: C25D,F28F,Y10S

Abstract:
A heat transfer surface on tubular or plate-like bodies having a microstructure of projections which protrude out of the base surface and are galvanized onto the base surface with a minimum height of 10 &mgr;m, characterized in that the base surface (3a) is partially or entirely covered with projections (6); these projections (6) are applied in the form of ordered microstructures (7) and have a pin shape, extending with their longitudinal axis (6c) either perpendicular to the base surface (3a) or at an angle (&agr;) between 30Â° and 90Â°, wherein the number of projections per unit of area is selected as a function of the thickness (d) of the pin-shaped projections (6) and is between 100 &mgr;m and 0.2 &mgr;m for a number between 102/cm2 and 108/cm2.