Patent ID: 9103565
Filing Date: 2015-08-11
Classification: F24S,Y02E

Abstract:
1. A solar collector receiver tube comprising: at least one central tubular element arranged in an external tubular element; at least one element with variable length for compensating a different thermal expansion of said two tubular elements; and at least one getter system comprising a container that houses cylindrical pills of compressed powders of getter material, the container having an inner wall and an external wall, wherein the cylindrical pills are disposed in the container between the inner wall and the external wall, wherein said container is substantially toroidal-shaped and is arranged around the central tubular element, the cross-section of the container having a width comprised between 1.05*i and 1.2*i, wherein i is a lateral overall dimension of each cylindrical getter material pill in the container cross-section, and wherein said container is void of other materials between the cylindrical pills and the container walls.