| 摘要 |
The invention relates to a solar collector (1), which comprises at least one collector mirror (2) and at least one absorber tube (10), wherein the absorber tube (10) comprises at least one flow channel (20) through which a heat-transfer medium can flow from an inlet cross-section (16) to an outlet cross-section (18). In said solar collector, at least one flow guiding device (60) is arranged after the inlet cross-section (16), wherein the at least one flow guiding device produces vortices (30, 32, 34) in the heat-transfer medium, wherein said vortices cause a thinning of the thermal boundary layer (36) on the half (12) of the absorber tube (10) facing the collector mirror (2) and a thickening of the thermal boundary layer (36) on the half (14) of the absorber tube (10) facing away from the collector mirror (2). |
