Flat plate type solar reflecting condenser composed of non-paraxial high-order cylindrical surfaces
A concentrator and flat-plate technology, applied in the field of concentrators, can solve problems such as high cost
Active Publication Date: 2014-06-18
陈应天
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[0022] The present invention proposes a new device that overcomes the disadvantage of high cost of traditional solar concentrators, that is, a device that can be used in a trough system with simple fabrication, low cost, and splicing properties. Flat Reflective Concentrator Composed of Subcurved Surfaces
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[0044] specific implementation plan
[0045] The present invention uses the theory of non-paraxial high-order curved surfaces proposed by Chen Yingtian, Li Li, etc., to describe the above-mentioned non-paraxial high-order curved surfaces in the case of a flat plate, that is, in the case of y=0, Extended to non-paraxial high-order cylinder, a new flat-plate concentrator is developed by combining multiple such high-order cylinders on a flat plate. In the trough-type line focusing system, the sun-tracking system is used to focus the light that is projected on the flat plane and parallel to the new flat-type concentrator into a line. The flat-plate concentrator can be widely used in existing large-scale photoelectric and photothermal systems. like figure 1 A flat-plate reflective concentrator composed of multiple non-paraxial high-order cylinders is shown, in which parallel light 1 is incident on the flat-plate concentrator 3, and is reflected and focused on the center (F)5 by m...
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The invention discloses a flat plate type solar reflecting condenser composed of combined non-paraxial high-order curved surfaces, and aims to provide a new device provided with lower cost and simplicity in manufacture and used for a solar trough condenser. A plurality of different non-paraxial high-order cylindrical surfaces are combined to form a plane, thereby realizing the flat-plate type solar trough condenser. In the flat plate type solar reflecting condenser, a multi-section high-order cylindrical surface can be processed on a two-dimensional flat plate through a numerically-controlled machine tool, the width of each section of the cylindrical surface can be equal or different, and for the parameter of each specific high-order cylindrical surface, the incidence angle in the central line of each cylindrical surface and the corresponding line focal distance can be deduced according to the designed geometrical relationship mode, and then the shape of the high-order cylindrical surface is calculated according to the provided formula. The flat plate type solar reflecting condenser is widely applied to a trough type solar power generator, a trough type solar steam generator and a trough type solar heater, and can be used for replacing a trough type parabolic condenser in the prior art.
Description
technical field [0001] The invention relates to a concentrator used in solar thermal and photoelectric devices, in particular to a concentrator which can be used in a trough system, is simple to manufacture, low in cost, and has splicing properties and consists of multiple non-paraxial high-order cylinders. A flat-plate solar reflective concentrator. Background technique [0002] The reflective surface of the solar reflective concentrator is generally limited to the concentrating surface described by the quadric surface or cylinder. Principles of optics. In the case of paraxial rays, the reflective surfaces of these concentrators can be spherical, expressed by the quadric equation: [0003] x 2 +y 2 +z 2 =R 2 (1) [0004] Its point focal length is [0005] Can be a cylindrical surface, expressed as a quadratic surface equation: [0006] x 2 +z 2 =R 2 (2) [0007] Its...
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IPC IPC(8): G02B19/00G02B7/182H02S40/22F24J2/46
CPCY02E10/40Y02E10/52
Inventor 陈应天
Owner 陈应天