Solar receiver for a solar thermal energy system, and solar thermal energy system

Abstract

A solar receiver for a solar thermal system that is formed with ytterbium hexaboride (YbB6) is provided. A solar thermal system having a solar receiver of this kind is also provided.

1 . An apparatus comprising:
 a solar receiver for a solar thermal energy system that is formed with ytterbium hexaboride.   
     
     
         2 . The apparatus as claimed in  claim 1 , wherein the solar receiver has a layer structure or a layer. 
     
     
         3 . The apparatus as claimed in  claim 1 , wherein the solar receiver has a Bragg mirror. 
     
     
         4 . The apparatus as claimed in  claim 2   claim 2 , wherein the Bragg mirror is part of the layer structure. 
     
     
         5 . The apparatus as claimed in  claim 1 , wherein at least one part of the ytterbium hexaboride forms at least one part of the layer or of the layer structure. 
     
     
         6 . The apparatus as claimed in  claim 1 , wherein the solar receiver is coated with a non-oxidizing or weakly and/or slowly oxidizing material. 
     
     
         7 . The apparatus as claimed in  claim 1 , wherein the solar receiver has a chamber that is transparent in a visible spectral range, and the ytterbium hexaboride is arranged at least partly in the chamber. 
     
     
         8 . The apparatus as claimed in  claim 7 , wherein the chamber that is transparent in the visible spectral range is embodied as at least partly cylindrical and/or tubular. 
     
     
         9 . The apparatus as claimed in  claim 7 , wherein the chamber that is transparent in the visible spectral range is formed with glass. 
     
     
         10 . The apparatus as claimed in  claim 7 , wherein the chamber that is transparent in the visible spectral range is at least partly gas-evacuated. 
     
     
         11 . The apparatus as claimed in  claim 7 , wherein the chamber that is transparent in the visible spectral range is at least partly oxygen-evacuated. 
     
     
         12 . A solar thermal energy system comprising: a solar receiver as claimed in  claim 1 . 
     
     
         13 . The solar thermal energy system as claimed in  claim 12 , wherein the solar thermal energy system is designed for an operation of the solar receiver at a temperature greater than/equal to 500° C. 
     
     
         14 . The apparatus as claimed in  claim 5 , wherein at least one part of the ytterbium hexaboride forms an inner part of the layer structure. 
     
     
         15 . The solar thermal energy system as claimed in  claim 13 , wherein the temperature is greater than/equal to 600° C. 
     
     
         16 . The solar thermal energy system as claimed in  claim 13 , wherein the temperature is greater than/equal to 700° C.