Device for concentrating energy

Abstract

The present invention relates to solar-energy engineering and can find application in solar power plants of the kind of “tracking saucer”, “pan” and “solar tower” and in other similar systems. The technical result obtained by the application of the present invention consists to improve the accessibility of the technology, to simplify the adjustment and to avoid existing strict limitations as to the size of the mirror system. Said technical result is achieved thanks to the fact that a device for concentrating energy comprising a main concentrator and an energy converter comprises an additional concentrator mounted in the focal zone of the main concentrator, the energy converter being mounted in the focal zone of the additional concentrator, whereas the additional concentrator is designed as a segment of a concave cylindrical or spherical surface. At the same time, the main concentrator can be made as a collection of flat mirrors oriented in a way to let the reflected ray axe pass by the center of the sphere or by the cylinder axe of the additional concentrator. The flat mirrors can be mounted at an angle to the horizon, equal to the half geographic latitude of the device location site, and the energy converter can be made as a heat exchanger or as a distributed system of active or passive elements. Besides, the main concentrator surface supporting the flat mirrors can be made spherical or cylindrical, with a radius equal to a double distance between its surface and the sphere center or the cylinder axe of the additional concentrator. Said technical result is achieved as well thanks to the fact that the heat exchanger can be comprised of at least two parts and can be made as a spherical ring or an annular spherical plate.

1 . Device for concentrating energy, comprising a main concentrator and an energy converter, wherein it comprises an additional concentrator mounted in the focal zone of the main concentrator, and the energy converter is mounted in the focal zone of the additional concentrator, the additional concentrator being made as a segment of a concave cylindrical or spherical surface. 
     
     
         2 . Device of  claim 1 , wherein the main concentrator is made as a collection of flat mirrors oriented in a way to let the reflected ray axe pass by the center of the sphere or by the cylinder axe of the additional concentrator. 
     
     
         3 . Device of  claim 1 , wherein the energy converter is made as a heat exchanger. 
     
     
         4 . Device of  claim 1 , wherein the energy converter is made as a distributed system of active or passive elements. 
     
     
         5 . Device of  claim 1 , wherein the main concentrator surface supporting the flat mirrors is made spherical or cylindrical, with a radius equal to a double distance between its surface and the sphere center or the cylinder axe of the additional concentrator. 
     
     
         6 . Device of  claim 1 , wherein the flat mirrors are mounted at an angle to the horizon, equal to the half geographic latitude of the device location site. 
     
     
         7 . Device of  claim 1 , wherein the heat exchanger is composed of two parts at least. 
     
     
         8 . Device of  claim 1 , wherein the heat exchanger is made as a spherical ring or an annular spherical plate.