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Aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell

a technology of solar cells and mirror reflectors, applied in solar heat systems, solar thermal energy generation, light and heating apparatus, etc., can solve the problems of complex, known reflector arrays, and thus expensive manufacture and deployment, and achieve the effect of better appreciation of contributions to the ar

Inactive Publication Date: 2009-04-02
XIE JINCHUN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]There has been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the prese...

Problems solved by technology

Known reflector arrays suffer the disadvantage that they are complex and thus expensive to manufacture and deploy.

Method used

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  • Aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell
  • Aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell
  • Aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell

Examples

Experimental program
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Effect test

second embodiment

[0044]The triangular configuration of the second embodiment is further shown in FIG. 6A. Panel 515 is mounted to the outer ring 550 at contact points 550c and 550d, and to the inner ring 540 at contact point 540e. Connection between the panel 515 and the contact point 540e may include bolting the panel 515 to the contact point 540e by means of bolt 600. Space between the contact point 540e and the panel 515 provides adjustability to the orientation of the panel 515.

[0045]In accordance with the second embodiment of the invention, the inner and outer rings 540 and 550 are aligned concentrically and supported by a support frame 610. To achieve a concave structure, the outer ring 550 is disposed in a plane above the inner ring 540 relative to a tilt axis 620.

[0046]A third alternative embodiment of the invention is shown in FIGS. 7A and 7B. A square concentrating platform 700 includes a 32×32 array of mirrors 710 supported by a flat support structure 720. As shown in FIG. 8, mirrors 710 ...

third embodiment

[0055]the invention shown in FIGS. 7A and 7B and in FIG. 8 provides a 32×32 array of 1024 square mirrors d 710 distributed on the flat support structure 720. In this configuration there is provided a space between adjacent mirrors to avoid one mirror blocking the reflected light of the adjacent mirror. The minimum space between the edges of two adjacent mirrors is calculated as

v=d′ sin(θ / 2)tan θ,  (4)

where d′ is the mirror width described in equation (2) and θ is the angle between incident light and reflected light. For the flat structure, θ is simply calculated as following.

θ=tan−1(R / H).  (5)

In case of a tilt angle θ=45°, the mirror reduced width d′=0.765d, space v=0.383, d′=0.293d, sunlight projection d″=0.707d and cell width v+d″=d. The values for other tilt angles are listed in Table I shown in FIG. 11. As the mirror is tilted, the space between adjacent mirrors becomes larger and sunlight projection smaller. The cell width as the sum of the two is unchanged. The mirrors are dis...

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Abstract

An aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell is disclosed. The reflector array includes a concentrating dish and a plurality of flat mirrors disposed on an inside surface of the concentrating dish, the plurality of flat mirrors being disposed and aligned on the inside surface of the concentrating dish such that sunlight impinging upon each of the plurality of flat mirrors is reflected upon the solar cell.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority under 35 U.S.C. 119(e) from provisional patent application Ser. No. 60 / 997,253, entitled “Aligned Multiple Flat Mirror Reflectors Array To Concentrate Sunlight Onto Solar Cell”, filed on Oct. 1, 2007, the disclosure of which is herein incorporated by reference in its entirety.BACKGROUND OF THE INVENTION[0002]The present invention relates generally to solar reflector arrays and more particularly to an aligned multiple flat mirror reflector array for concentrating sunlight onto a solar cell.[0003]The use of reflectors for focusing sunlight are well know. For example, U.S. Pat. No. 6,042,240 entitled “Adjustable Three Dimensional Focal Length Tracking Reflector Array” discloses a reflector positioned in orbit about a celestial body to focus sunlight on objects such as space debris to heat up and vaporize such debris. The reflector includes a plurality of units in an array, with each of the units includ...

Claims

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Application Information

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IPC IPC(8): F24J2/10F24J2/12F24J2/16F24S23/71F24S23/70F24S23/77
CPCF24J2/1047F24J2/16H01L31/0547Y02E10/47Y02E10/52F24J2/542F24S23/80F24S30/452F24S23/77
Inventor XIE, JINCHUN
Owner XIE JINCHUN
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