Solar collector tube and a solar collector with multiple solar collector tubes

Abstract

The object of the invention is a solar collector tube ( 2 ) for heating up gases, which comprises two tubes ( 21, 22 ) for forming a tube wall, disposed in a spaced-apart relationship so as to form an intermediate space, wherein the outer tube ( 21 ) is made of glass, a translucent synthetic material or composite material and the inner tube ( 22 ) is made of metal or a synthetic or composite material, wherein the solar collector tube ( 2 ) is open at both ends, at least in the region of the inner tube ( 22 ), for allowing passage of the gas to be heated.

1 - 17 . (canceled) 
     
     
         18 . A solar collector tube for heating up gases, comprising:
 an outer tube, wherein the outer tube is made of a material selected from the group consisting of glass, a translucent synthetic material and a translucent composite material,   an inner tube, disposed inside the outer tube in a spaced-apart manner, having a hollow space defined inside the inner tube, wherein the inner tube is made of a material selected from the group consisting of metal, a synthetic material and a composite material;   the outer tube and the inner tube cooperating to form a tube wall;   an intermediate space defined between the outer tube and the inner tube; and   wherein the inner tube is open at both ends, for allowing passage of the gases to be heated through the hollow space.   
     
     
         19 . The solar collector tube according to  claim 18 , wherein the inner tube and the outer tube are connected to each other at their ends in a gas-tight manner for closing the intermediate space. 
     
     
         20 . The solar collector tube according to  claim 18 , further comprising an absorber layer. 
     
     
         21 . The solar collector tube according to  claim 18 , wherein the inner tube is made of an absorber material. 
     
     
         22 . The solar collector tube according to  claim 20 , wherein the absorber layer is a coating. 
     
     
         23 . The solar collector tube according to  claim 20 , wherein the absorber layer is disposed on an outer side of the inner tube. 
     
     
         24 . The solar collector tube according to  claim 18 , wherein the outer tube and inner tube are connected to each other at least at one end. 
     
     
         25 . The solar collector tube according to  claim 24 , wherein the outer tube and the inner tube are glued to each other in a temperature-resistant manner. 
     
     
         26 . The solar collector tube according to  claim 18 , further comprising a heat conductor for transferring the heat from the inner tube to the gas passing through the inner tube, wherein the heat conductor is disposed in the hollow space of the inner tube. 
     
     
         27 . The solar collector tube according to  claim 18 , wherein the intermediate space is evacuated. 
     
     
         28 . The solar collector tube according to  claim 18 , wherein the intermediate space is filled with a low heat-conductive gas. 
     
     
         29 . The solar collector tube according to  claim 28 , wherein the gas is argon. 
     
     
         30 . The solar collector tube according to  claim 18 , wherein the inner tube has a compensator. 
     
     
         31 . The solar collector tube according to  claim 30 , wherein the compensator has a wave-shaped, folded or meandering configuration. 
     
     
         32 . A solar collector with multiple solar collector tubes according to  claim 18 , wherein the multiple solar collector tubes are connected to each other by sleeves. 
     
     
         33 . The solar collector according to  claim 32 , wherein the sleeves have a T-shaped cross-section. 
     
     
         34 . The solar collector according to  claim 32 , wherein each sleeve has two limbs and a web, the web of the sleeve being located between the tube walls of two adjoining solar collector tubes and one limbs of the sleeve surround the tube wall of the respective solar collector tube in a manner of a cuff. 
     
     
         35 . The solar collector according to  claim 32 , wherein the sleeve is made of an elastomer or another synthetic or composite material.