Funnel-shaped optical energy current density multiplier

A technology of flux density and multiplier, which is applied in the field of solar concentrators, can solve the problems of low concentrating efficiency of solar cells, the ratio of the area ratio of the light inlet to the light outlet can not reach a large concentrating multiple, and achieve high concentrating efficiency , Simple structure, easy molding effect

Inactive Publication Date: 2014-05-14
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, due to the structural characteristics of the rotating paraboloid, the area ratio of the light inlet to the light outlet (determining the light concentration multiple) cannot be very large, so its light concentration efficiency for solar cells is still low.

Method used

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  • Funnel-shaped optical energy current density multiplier
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  • Funnel-shaped optical energy current density multiplier

Examples

Experimental program
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Effect test

Embodiment 1

[0012] Taking the inner diameter d of the light exit port as 30cm and the inner diameter D of the incident port equal to 10d as an example, the structure of the funnel-shaped light energy flux density multiplier is as follows:

[0013] exist figure 1 Among them, the geometric shape of the funnel-shaped optical energy flux density multiplier of the present embodiment is funnel-shaped, the inner diameter d of the light exit port is 30cm, the inner diameter D of the light incident port is equal to 10d, and the geometric shape of the inner surface of the side wall is a hyperbolic rotational surface, A hyperbolic surface of revolution is a hyperbolic equation in a Cartesian coordinate system

[0014] 4 x 2 d - y 2 ( nd ) 2 ...

Embodiment 2

[0017] Taking the inner diameter d of the light exit port as 30cm and the inner diameter D of the incident port equal to 5d as an example, the structure of the funnel-shaped light energy flux density multiplier is as follows:

[0018] The geometric shape of the funnel-shaped light energy flux density multiplier of this embodiment is funnel-shaped, the inner diameter d of the light exit port is 30cm, the inner diameter D of the light incident port is equal to 5d, and the geometric shape of the inner surface of the side wall is a hyperbolic rotational surface, hyperbolic The rotating curved surface is a rotating hyperboloid formed by rotating the hyperbolic equation in the Cartesian coordinate system as the generatrix and the y-axis as the central axis. The hyperbolic equation is the same as the hyperbolic equation (1) in Embodiment 1. The inner surface of the side wall of the funnel-shaped optical energy flux density multiplier is provided with an aluminum reflective film.

Embodiment 3

[0020] Taking the inner diameter d of the light exit port as 30cm and the inner diameter D of the incident port equal to 15d as an example, the structure of the funnel-shaped light energy flux density multiplier is as follows:

[0021] The geometric shape of the funnel-shaped light energy flux density multiplier of the present embodiment is funnel-shaped, the inner diameter d of the light exit port is 30cm, the inner diameter D of the light incident port is equal to 15d, and the geometric shape of the inner surface of the side wall is a hyperbolic rotational surface, hyperbolic The rotating surface is a rotating hyperboloid formed by rotating the hyperbolic equation in the Cartesian coordinate system as the generatrix, taking the y-axis as the central axis, and rotating the center line of the funnel-shaped light energy flux density multiplier as the rotating axis. The hyperbolic equation is the same as the hyperbolic equation (1) of Example 1. The inner surface of the side wal...

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Abstract

A funnel-shaped optical energy current density multiplier is in the shape of a funnel which is in rotational symmetry about the center line. A reflection film is arranged on the inner surface of the side wall of the multiplier. The inner surface of the side wall is in the shape of a revolution surface which is formed in the mode that a curve rotates around the center line. The geometric shape of the inner surface of the side wall is a hyperbolical rotating surface. Among light rays which enter a plane where a light incidence port is located in a vertical incidence mode, the light rays within the range of a light emergence port with the center line as the center axis go straightly along the center line and are emitted through the light emergence port, other light rays which enter the hyperboloid of the side wall in an incidence mode are reflected, the reflected light serves as incident light of a next reflection point to enter the hyperboloid, closer to the light emergence port, of the side wall in an incidence mode, the light rays are transmitted to the light emergence port in the form of broken lines to be emitted, and therefore the light rays are gathered. The funnel-shaped optical energy current density multiplier has the advantages of being simple in structure, easy to form, small in size, low in cost, convenient to use, high in light-gathering efficiency and the like, and therefore the funnel-shaped optical energy current density multiplier can be used for gathering light of solar energy and other light sources.

Description

technical field [0001] The invention belongs to the technical field of solar concentrators, and in particular relates to a funnel-shaped light energy flux density multiplier. Background technique [0002] In the utilization of solar energy, due to the limitation of the conversion efficiency of various energy conversion devices (solar cells, water heaters, etc.), it is difficult to meet the ideal requirements for the utilization efficiency of solar energy. An effective means of device efficiency. At present, there are many types of solar concentrators. In addition to the traditional spherical concentrator lens concentrator and Fresnel concentrator lens concentrator, a variety of light funnel concentrators have appeared in recent years. The concentrating surface of many concentrators is a chamfered terrace formed by a plurality of flat reflectors, such as the Chinese invention patent "solar photovoltaic cell power generation device that enables the same light funnel to achiev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/06G02B5/10
Inventor 张宗权黄育红杨宗立
Owner SHAANXI NORMAL UNIV
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