Solar thermal collector

Abstract

A solar thermal collector ( 200 ) includes an absorber ( 210 ) for absorbing solar radiation, the absorber including a heat transport channel for a heat transport fluid, a collector frame ( 220 ) for covering the absorber, the frame including an access hole and an exit hole, and hydraulic connection tubes ( 230, 232 ) for connecting the heat transport channel and the other heat transport channels through the access and exit holes. The tubes are installed at least partly inside the collector and at least one of the tubes includes a flexible part inside the collector.

1 . A solar thermal collector ( 200 ) comprising
 an absorber ( 210 ) for absorbing solar radiation, the absorber comprising a heat transport channel for a heat transport fluid,   a collector frame ( 220 ) for covering the absorber, the frame comprising an access hole and an exit hole, and   hydraulic connection tubes ( 230 ,  232 ) for connecting the heat transport channel and other heat transport channels through the access and exit holes,   wherein   the tubes are installed at least partly inside the collector and at least one of the tubes comprises a flexible part inside the collector.   
     
     
         2 . The collector of  claim 1 , wherein the at least one of the tubes comprises a flexible part outside the collector. 
     
     
         3 . The collector of  claim 1 , wherein the flexible part is bended inside the collector. 
     
     
         4 . The collector of  claim 1 , wherein the at least one of the tubes is a flexible hose ( 230 ,  232 ). 
     
     
         5 . The collector of  claim 1 , wherein each of the tubes comprises a connection adapter ( 234 ,  236 ) for connecting the tube to a connection adapter ( 234 ,  236 ) of other heat transport channel. 
     
     
         6 . The collector of  claim 1 , wherein the connection adapter comprises a transport position for protecting the adapter during transportation, the connection adapter is configured to be pulled out from the transport position for the hydraulic connection and to be pushed back into the collector during the connection of the collector. 
     
     
         7 . The collector of  claim 1 , wherein the access and exit holes locate in side frames ( 222   a,    222   b ) of the frame. 
     
     
         8 . A method for connecting a solar thermal collector ( 200 ) of  claim 1 , which collector comprises
 an absorber absorber ( 210 ) for absorbing solar radiation, the absorber comprising a heat transport channel for a heat transport fluid, and   a collector frame ( 220 ) for covering the absorber, the frame comprising an access hole and an exit hole,   the method comprising   connecting, by means of hydraulic connection tubes ( 230 ,  232 ), the heat transport channel and other heat transport channels through the access and exit holes, when the tubes are installed at least partly inside the collector and at least one of the tubes comprises a flexible part inside the collector.   
     
     
         9 . The collector of  claim 2 , wherein the flexible part is bended inside the collector. 
     
     
         10 . The collector of  claim 2 , wherein the at least one of the tubes is a flexible hose ( 230 ,  232 ). 
     
     
         11 . The collector of  claim 2 , wherein each of the tubes comprises a connection adapter ( 234 ,  236 ) for connecting the tube to a connection adapter ( 234 ,  236 ) of other heat transport channel. 
     
     
         12 . The collector of  claim 2 , wherein the connection adapter comprises a transport position for protecting the adapter during transportation, the connection adapter is configured to be pulled out from the transport position for the hydraulic connection and to be pushed back into the collector during the connection of the collector. 
     
     
         13 . The collector of  claim 2 , wherein the access and exit holes locate in side frames ( 222   a,    222   b ) of the frame. 
     
     
         14 . The collector of  claim 3 , wherein each of the tubes comprises a connection adapter ( 234 ,  236 ) for connecting the tube to a connection adapter ( 234 ,  236 ) of other heat transport channel.