Solar receiver tube assembly with suited receiver tube per working temperature and use of the receiver tube assembly

Abstract

A solar receiver tube assembly is provided with at least one first solar receiver tube with a first selective absorptive coating; at least one second solar receiver tube with a second selective absorptive coating, wherein values of at least one optical characteristic of the first selective coating and the second selective coating differs from each other while an operating the solar receiver tube assembly. The optical characteristics are preferably α and ε. The idea is to improve the effectiveness of the receiver tubes along the receiver assembly.

The claims are as follows: 
     
         1 . A solar receiver tube assembly with
 at least one first solar receiver tube with a first selective absorptive coating;   at least one second solar receiver tube with a second selective absorptive coating, wherein   values of at least one optical characteristic of the first selective coating and the second selective coating differs from each other while operating the solar receiver tube assembly.   
     
     
         2 . The solar receiver tube assembly according to  claim 1 , wherein the first receiver tube and the second receiver tube are components of a single loop of the solar receiver tube assembly. 
     
     
         3 . The solar receiver tube assembly according to  claim 1 , wherein the first receiver tube is a component of a first loop of the solar receiver tube assembly and the second receiver tube is a component of a second loop of the solar receiver tube assembly and the first loop and the second loop are different from each other. 
     
     
         4 . The use of the solar receiver tube assembly according to  claim 1  in a power plant for converting solar energy into electrical energy.