Solar collector having fresnel mirrors

Abstract

The present specification relates to a solar collector having Fresnel mirrors including a mounting for a set of mirrors made up of strips of mirrors referred to as primary mirrors, each pivoting about a respective axis of rotation referred to as the large axis relative to the mounting, and intended for collecting solar radiation and for concentrating said radiation toward one or more concentrating elements which can be mutually similar or different, carrying a heat-transfer fluid, characterized in that the solar collator comprises a means for moving one or more concentrating elements such as to make the collector mobile relative to the mounting of the set of primary mirrors.

1 . A solar power station comprising:
 a set of primary mirrors, each primary mirror being made of a planar strip of mirror;   a support for said set of primary mirrors,   each primary mirror pivoting around a corresponding large axis of rotation corresponding to a longitudinal axis of said each primary mirror, and the set of primary mirrors being configured to collect the rays of the sun so as to concentrate them toward an arrangement of one or more concentrator elements of the same nature or different natures,   a mover for moving one or more concentrator elements so as to make it movable relative to the support of the set of primary mirrors, the mover including a moving part allowing movement of the one or more concentrator element(s),   an actuator for rotating the set of primary mirrors around their corresponding large axes as a function of the height of the sun and in which the movement of the concentrator element created by the mover depends on the movements of the set of primary mirrors.   
     
     
         2 . The solar power station according to  claim 1 , wherein the one or more concentrator elements comprising a concentrator tube passed through by a coolant. 
     
     
         3 . The solar power station according to  claim 1 , wherein the one or more concentrator element comprising a photovoltaic module. 
     
     
         4 . The Fresnel mirror solar power station according to  claim 1 , wherein the moving part allows movement of the concentrator element(s) in a horizontal plane and in a direction substantially longitudinal to the direction of the large axes of the primary mirrors. 
     
     
         5 . The Fresnel mirror solar power station according to  claim 1 , wherein the moving part allows movement of the concentrator element(s) in a horizontal plane and in a lateral direction substantially transverse to the direction of the large axes of the primary mirrors. 
     
     
         6 . The solar power station according to  claim 1 , comprising a secondary mirror designed to reflect toward the concentrator element(s) part of the radiation reflected by the set of primary mirrors that does not directly reach the concentrator element(s) and in which the secondary mirror follows the movement of the concentrator element(s) and is rotatably movable around a main axis of the one or more concentrator element(s). 
     
     
         7 . The solar power station according to  claim 1 , comprising a secondary mirror wherein the secondary mirror has an opening angle whereof a bisector is oriented in rotation around the concentrator element(s) to coincide with a bisector of the angle formed by an intersection of two extreme reflected rays among a plurality of reflected rays reflected by the set of primary mirrors. 
     
     
         8 . The solar power station according to  claim 1 , comprising a device for making the positioning of the set of primary mirrors idle in case of strong wind. 
     
     
         9 . The solar power station according to  claim 1 , comprising a device for making the positioning of the set of primary mirrors idle, autonomous and with positive security in the event of a loss of current. 
     
     
         10 . The solar power station according to  claim 1 , comprising a device for putting the set of primary mirrors and/or the concentrator element(s) in a maintenance position. 
     
     
         11 . The solar power station according to  claim 1 , comprising a manual operation device allowing an operator to orient the primary mirrors to his liking and to position the concentrator element(s). 
     
     
         12 . The solar power station according to  claim 1 , comprising an automated cleaning device for the set of primary mirrors alone or with a secondary mirror. 
     
     
         13 . The solar power station according to  claim 1 , comprising at least one thermal sensor arranged to absorb a diffuse radiation from the sun. 
     
     
         14 . The solar power station according to  claim 13 , wherein the thermal sensor comprises a heat exchanger in communication with the coolant circulating in the concentrator tube(s). 
     
     
         15 . The solar power station according to  claim 13 , wherein the at least one thermal sensor is rotatably movable around an axis of substantially the same direction as the large axis of each of the set of primary mirrors. 
     
     
         16 . The solar power station according to  claim 1 , wherein the set of primary mirrors comprise a rear surface including photovoltaic modules, the pivoting movement of each of the primary mirrors around their respective large axes in relation to the support allowing a rear surface to take the place of a front surface and vice versa. 
     
     
         17 . A solar power station comprising:
 a set of primary mirrors, each primary mirror being made of a planar strip of mirror,   a support for said set of primary mirrors,   each primary mirror pivoting around a corresponding large axis of rotation corresponding to a longitudinal axis of said primary mirror,   the set of primary mirrors being configured to collect the rays of the sun so as to concentrate them toward an arrangement of one or more concentrator elements of the same nature or different natures,   wherein the large axes of the set of primary mirrors are comprised in a same plane,   a mover for moving one or more concentrator elements so as to make it movable relative to the support of the set of primary mirrors, the mover including a moving part allowing movement of the concentrator element(s),   an actuator for rotating the set of primary mirrors around their corresponding large axes as a function of the height of the sun and in which the movement of the concentrator element created by the mover depends on the movements of the set of primary mirrors.