A CHANNEL ARRANGEMENT FOR A SOLAR ABSORBER, A SOLAR ABSORBER, USE OF A CHANNEL ARRANGEMENT

摘要

A channel arrangement (1) for a solar absorber. The channel arrangement (1) comprises a surface (3) adapted to be exposed to solar radiation and transform the solar radiation to heat, a body (5) adapted to absorb the heat from the surface (3). The body (5) comprises two or more cooling channels (10) for conducting a fluid, which fluid absorbs heat from the body (5) and transfer the heat away from the body (5), at least one inner heat conducting part (12) between the cooling channels (10), which conducting part is adapted to conduct heat to the cooling channels. Each of the cooling channels has a first cross section area (Al) for conducting the fluid and the at least one inner heat conducting part (12) comprises material with a second cross section area (A2), wherein a first ratio between first cross section area(Al) and the second cross section area (A2) is in the range of 0,7 - 0,9.