Component for a heat exchanger

Component for a heat exchanger which exchanges heat between the environment and a liquid, having at least one tube for receiving the liquid, and at least one heat exchange surface heat-conductively connected to the tube, the heat exchange surface comprising a multiplicity of substantially flat plate elements having upper surfaces and lower surfaces fastened to the tube, said plate elements being disposed in a row side by side and overlapping each other in adjoining regions, in said adjoining overlapping regions one plate element having a planar part with an end and the other plate element having a bent-up part adjacent a flat part being fastened to the tube, said bent-up part of said other plate element overlapping said planar part of said one plate element forming a gap therebetween, said end of said planar part of said one plate element being spaced from said flat part of said other plate element fastened to the tube defining an interspace therebetween, said gap and interspace forming an air flow path from the upper surface to the lower surface of said plate elements.