Solar power concentrating system

Abstract

An outer side of a receiver is covered with a housing, so that the receiver is not exposed to the open air and no heat of the receiver is taken by winds, to improve thermal efficiency. Although the outer side of the receiver is covered with the housing, a lower side thereof has an opening, so that sunlight reflected by heliostats is introduced through the opening to the inside of the receiver and is surely received by an inner face of the receiver.

1 . A solar concentrating system having a receiver installed at a predetermined height and heliostats arranged on the ground around the receiver, the heliostats reflecting sunlight toward the receiver, wherein:
 the receiver has an inverted container shape having an opening at a lower side thereof to introduce sunlight; a housing is arranged on an outer side of the receiver and surrounds the receiver except the opening; and   a space for a heating fluid is defined by the housing and the receiver.   
     
     
         2 . The solar concentrating system according to  claim 1 , wherein the diameter of the opening of the receiver is smaller than that of the inside of the receiver. 
     
     
         3 . The solar concentrating system according to  claim 1 , wherein the receiver is made of solid silicon carbide, or solid carbon material entirely covered with a silicon carbide film. 
     
     
         4 . The solar concentrating system according to  claim 1 , wherein an inner face of the housing is provided with a mirror coating. 
     
     
         5 . The solar concentrating system according to  claim 1 , wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing. 
     
     
         6 . The solar concentrating system according to  claim 2 , wherein the receiver is made of solid silicon carbide, or solid carbon material entirely covered with a silicon carbide film. 
     
     
         7 . The solar concentrating system according to  claim 2 , wherein an inner face of the housing is provided with a mirror coating. 
     
     
         8 . The solar concentrating system according to  claim 3 , wherein an inner face of the housing is provided with a mirror coating. 
     
     
         9 . The solar concentrating system according to  claim 2 , wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing. 
     
     
         10 . The solar concentrating system according to  claim 3 , wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing. 
     
     
         11 . The solar concentrating system according to  claim 4 , wherein the receiver is made from the same material as the housing so that the receiver is continuous and integral with the housing.