| abstract |
The present invention relates to a light absorbing unit (I) for heating, via a light-transmissive layer (70), at least a liquid medium (D) by means of solar energy comprising a channel configuration (22) internally of said light-transmissive layer (70) in which said liquid medium (L ) is adapted to flow for said heating, wherein light absorbing means (30) are configured to substantially enclose said channel configuration (22), wherein said light- transmissive layer (70) comprises a semi-transparent solar cell element (76). |