| abstract |
Selective absorbent coating of thenradiation, absorbent tube and manufacturing process.n n n The invention relates to a coatingnSelective radiation absorber (20) for absorbent tubesn(13) of parabolic grooved manifolds (10), with at least twonbarrier layers (24a, 24b), a reflective layer (21) in the areaninfrared arranged above, at least one absorption layer (22)narranged on the reflective layer (21) and with a layernanti-reflection (23) arranged on the layer ofnabsorption (22). The invention relates to an absorbent tube (13)nwith a steel tube (1) and with an absorbent coating (20) ofnthis type applied on its outer side and anprocedure for manufacturing an absorbent tube (13) of thisn kind. |