| 摘要 |
The invention relates to a heat exchanger tube with a tube axis, a tube wall and with ribs extending around on the tube outer side. The ribs have a rib foot, rib flanks and a rib tip, wherein the rib foot projects substantially radially from the tube wall. The rib flanks are provided with additional structural elements which are arranged laterally on the rib flank. First material projections, which extend substantially in the axial and radial direction, adjoin second material projections which extend substantially in the axial and circumferential direction of the tube, wherein the first and second material projections have a common boundary line. According to the invention, the axial extent of the first material projections along this boundary line is less than the axial extent of the second material projections. A further aspect of the invention is that the first material projections adjoin in each case a point on second material projections and that the axial extent of the first material projections at this point is equal to zero. Furthermore, a further aspect of the invention is that the first material projections are arranged at a distance from the second material projections. |
