Solar receiver for a solar concentrator with a linear focus

Abstract

A solar receiver for a linear-focusing solar concentrator, comprising, a base, which is elongated in a direction parallel to a focal line and carries an array of strip-shaped targets arranged orthogonal to said focal line and set at a distance apart from one another in a direction parallel to the focal line; a focusing assembly including an array of optical elements arranged for focusing solar radiation on said strip-shaped targets, the focusing assembly being mobile with respect to the base of the photovoltaic receiver in a direction parallel to said focal line; and an azimuthal pointing device, designed to move the focusing assembly with respect to said base as a function of the position of the sun.

1 . A solar receiver for a linear-focusing solar concentrator, comprising:
 a base, which is elongated in a direction parallel to a focal line and carries an array of strip-shaped targets arranged orthogonal to said focal line and set at a distance apart from one another in a direction parallel to the focal line;   a focusing assembly including an array of optical elements arranged for focusing solar radiation on said strip-shaped targets, the focusing assembly being mobile with respect to the base of the photovoltaic receiver in a direction parallel to said focal line; and   an azimuthal pointing device, designed to move the focusing assembly with respect to said base as a function of the position of the sun.   
     
     
         2 . The solar receiver according to  claim 1 , wherein each of said optical elements is associated to a respective strip-shaped target. 
     
     
         3 . The solar receiver according to  claim 1 , wherein said strip-shaped targets are set at a distance apart from one another in a direction parallel to said focusing line by a distance substantially greater than the width of each strip-shaped target in said direction. 
     
     
         4 . The solar receiver according to  claim 1 , wherein said azimuthal pointing device comprises at least two photodetectors fixed to the base of the receiver on opposite sides of a strip-shaped target in a direction parallel to said focal line. 
     
     
         5 . The solar receiver according to  claim 1 , wherein the base has the shape of an elongated parallelepiped with two principal faces set parallel to one another, on a first face there being fixed strip-shaped photovoltaic targets and on a second face there being fixed a thermal collector. 
     
     
         6 . The solar receiver according to  claim 5 , wherein said focusing assembly comprises a support carrying said optical elements and slidably coupled to said base by means of guides.