| 摘要 |
The invention relates to an absorber tube, especially for solar collectors (10) in solar thermal power plants, with at least one collector mirror (12), said tube comprising a metal tube (22) for supplying and heating a heat transfer medium, a sheath tube (24) surrounding the metal tube (22), for forming an annular space (26) that can be evacuated, a wall extending through the sheath tube (24) and the metal tube, for sealing the annular space (26), and a getter material (38) for binding free hydrogen in the annular space (26). The absorber tube (18) has a temperature variation device (42) for changing the temperature of the getter material (38) and the wall (32). |
