Patent ID: 8302595

Claim:
A solar absorber module comprising: a housing with a longitudinal axis, the housing comprising a first tapered housing section with a first free end and a second end with a reduced cross-sectional area compared to the first end, and a second housing section adjoining the second end of the first housing section with a substantially constant cross-section over its length; and a ceramic solar absorber element accommodated in the first end of the first housing section, the absorber element comprising a first surface that can be oriented toward the solar radiation with an axis of symmetry, and a second surface lying across from the first surface, wherein the solar absorber element comprises a large number of substantially straight channels connecting the first surface to the second surface, and the solar absorber element is accommodated in the first end of the first housing section such that the axis of symmetry of the first surface is inclined relative to the longitudinal axis of the housing, wherein the housing comprises, in the first tapered housing section, a wall extending over an entire internal cross-section of the first housing section, the wall being provided with a plurality of openings, wherein a cross section of the openings and/or density of the openings per surface unit of the wall increases from a center of the surface of the wall to an edge of the surface of the wall.