SOLAR RADIATION CONCENTRATOR Russian patent published in 2019 - IPC F24S23/71 G02B5/10 

FIELD: solar engineering.

SUBSTANCE: solar radiation concentrator is made in the form of a body of revolution, which inner surface is a reflecting surface, and a radiation receiver located under it. Working surface of radiation receiver is located in focal plane of concentrator. Axis of rotation of the concentrator passes through the centre of the focal spot of the concentrator, perpendicular to it. Degree of concentration in each point of focal spot is equal. Reflecting surface consists of several parts located one on the other, each of which represents a body of revolution. Axis of rotation of all parts is the axis of rotation of the concentrator. Each part of the reflecting surface provides homogeneous illumination of the entire focal spot. Number of reflected beams arriving at each point of the focal spot is equal to the number of parts of the reflecting surface. Parts of reflecting surface smoothly merge with each other. Profile of reflecting surface is described by proposed system of equations, taking into account coordinates of point of beam incidence on reflecting surface, coordinate of point of incidence of reflected beam on focal spot, degree of concentration of radiation in focal spot of concentrator, provided by each part of reflecting surface, total degree of concentration, number of parts of reflecting surface, radii of smallest and largest sections of each part of reflecting surface perpendicular to axis of rotation of concentrator.

EFFECT: technical result consists in reduction of radiation reflection from working surface and improvement of conversion efficiency.

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