| 主权项 |
1. A solar collector receiver tube containing one or more getter systems each comprising:
a base, pills of getter materials arranged on said base in one or more lines, and a containment metallic mesh fixed onto the base and enclosing the getter pills, wherein said getter pills are uniform in height and comprised between 1 mm and 10 mm, preferably between 2 mm and 6 mm, said containment metallic mesh has a non-uniform height and presents at least one depression defined by a minimum and a maximum height of the metallic containment mesh, and wherein the minimum height of the metallic containment mesh is equal to the height of the getter pills and the maximum height is comprised between 1.05 and 2 times the height of the getter pills, preferably between 1.2 and 1.5 times the height of the getter pills. |
