Light absorbing unit integrated in a roof construction

Abstract

A light absorbing unit for heating at least one liquid medium by solar energy includes a transparent surface layer including a channel configuration inside of which liquid medium can be streamed for heating. A light absorbing device is configured to contain the channel configuration. The light absorbing unit is configured to constitute an integrated part in a roof construction. The transparent surface layer includes roofing tiles transparently arranged to be supported by means of a batten. The batten is arranged to constitute a part of the light absorbing unit in the roof construction. The batten is arranged to be applied in the roof construction with the light absorbing unit. The batten is arranged to be supported along a long side of the light absorbing unit extending substantially horizontally in the roof construction.

1 . A light absorbing unit for heating at least one liquid medium by means of solar energy via a transparent surface layer comprising a channel configuration inside said transparent surface layer in which said liquid medium is arranged to stream for heating,
 wherein light absorbing means are configured to contain said channel configuration, which light absorbing unit is configured to constitute an integrated part in a roof construction,   wherein said transparent surface layer comprises roofing tiles transparently arranged to be supported by means of batten,   wherein said batten is arranged to constitute a part of said light absorbing unit in said roof construction,   wherein said batten is arranged to be applied in said roof construction with said light absorbing unit,   wherein said batten is arranged to run and be supported along a long side of said light absorbing unit, which long side is configured to run horizontally in said roof construction.   
     
     
         2 . A light absorbing unit according to  claim 1 , wherein said light absorbing unit is essentially parallelepipedicly configured. 
     
     
         3 . A light absorbing unit according to  claim 1 , wherein said batten comprises an upper portion for storage of roofing tiles arranged to project over an upper side of said light absorbing unit. 
     
     
         4 . A light absorbing unit according to  claim 1 , wherein said batten has an L-shaped cross section transversal to its longitudinal direction and wherein a foot portion of said L-shaped cross section is arranged to constitute a spacer between two adjacent light absorbing units. 
     
     
         5 . A light absorbing unit according to  claim 4 , wherein said upper portion is shorter transversal to the longitudinal direction of the batten than said foot portion. 
     
     
         6 . A light absorbing unit according to  claim 3 , wherein said upper portion has a downwardly open U-shaped configuration. 
     
     
         7 . A light absorbing unit according to  claim 6 , wherein said roofing tiles are configured to be connected to said batten by means of a connection member arranged to act between roofing tile and the batten. 
     
     
         8 . A light absorbing unit according to  claim 7 , wherein said connection member comprises an upper fastening portion arranged to be applied at a roofing tile and a lower fastening portion arranged to be applied at the batten, wherein said fastening portions are arranged to retain said connection member to said roofing tile. 
     
     
         9 . A light absorbing unit according to  claim 8 , wherein said lower fastening portion is arranged to interact with said upper portion of said batten. 
     
     
         10 . A light absorbing unit according to  claim 9 , wherein said lower fastening portion has an upwardly open U-shaped configuration for said interaction. 
     
     
         11 . A light absorbing unit according to  claim 3 , wherein said upper side comprises a transparent layer for thermally isolating said channel configuration for said liquid medium against the surrounding air.