| 摘要 |
Especially conceived to permit capturing solar radiation for the subsequent thermal interchange with a heat-transfer fluid that runs through the interior thereof, the absorber of the invention is comprised by extruded elements of aluminium or aluminium alloy (1), that form a channel (1b) for the circulation of the heat-transfer fluid, whose profile is directed towards both sides in the fins (1a) that together with the surrounding area of the channel established in the extruded profile are fastened by welding to two end and crosswise tubes (2) as collector elements; with the special feature that the free edges of the lateral fins of the adjoining extruded profiles plates (3) are welded, determining a surface continuity of the overall absorber, or else a common metallic sheet (4), which can have a selective coating. |
