A heat transfer promoting structure

摘要

A heat transfer promoting structure for promoting heat transfer between a heat transfer surface and a cooling medium. The structure comprises turbulence promoter elements with ribs (94) crossing a flow direction (X) of the cooling medium formed on the heat transfer surface in a projecting manner. The shape of the projecting ribs and/or preferably triangular notches (96) formed at an edge portion of the ribs serve as vortex producing elements efficiently producing a pair of longitudinal vortexes of which each vortex rotates in an opposite direction along a flow direction of the cooling medium. Thereby a strong turbulence is created near the heat transfer surface. As a result, the heat transfer efficiency is enhanced and the pressure loss of the flow of the cooling medium is reduced.