| 摘要 |
A hollow chamber profile section ( 10, 70 ) serves for the utilisation of solar energy, in particular for covering absorption rooves or the like, with a transparent upper part ( 12, 72 ) and a radiation-absorbing lower part ( 14 ), which are jointly produced by two-component extrusion from plastics material and are connected to one another in the interior of the hollow chamber profile section ( 10, 70 ) by webs ( 20, . . . , 30 ) running in the longitudinal direction, in such a way that parallel flow channels ( 34, . . . , 48 ) for a heat transfer medium are formed. The upper part ( 12, 72 ) is provided on its outside with a covering layer ( 50 ) that is produced jointly with the upper part ( 12, 72 ) and the lower part ( 14 ) by two-component extrusion combined with co-extrusion from a plastics material that absorbs the ultraviolet component of solar radiation and is transparent to other components.
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