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Multiple curved face composite solar energy concentrator based on bionics principle

A technology of solar concentrator and concentrator, which is applied in the direction of solar thermal collector, solar thermal energy, solar thermal power generation, etc. Conducive to popularization and use, lower device cost, and the effect of high concentration ratio

Inactive Publication Date: 2008-03-05
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the multi-stage CPC concentrator composed of simply stacked CPCs greatly reduces the maximum concentrating angle of the device, destroying the advantage of single-stage CPC without accurate tracking

Method used

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  • Multiple curved face composite solar energy concentrator based on bionics principle
  • Multiple curved face composite solar energy concentrator based on bionics principle
  • Multiple curved face composite solar energy concentrator based on bionics principle

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

[0022] Fig. 1 is a schematic diagram of the connection optical path and operation principle of the present invention. In Figure 1, the operating principle of the device can be explained step by step as follows:

[0023] The invention is a device capable of concentrating low-density sunlight in multiple stages so as to gather ordinary sunlight into high-density sunlight. During the operation of the device, sunlight (4) is incident on the inner surface of the first-stage CPC (3), if the angle between the sunlight (4) and the symmetry axis (5) is smaller than the maximum of the first-stage CPC (3) Concentration angle (every CPC has a maximum concentration angle, light greater than the maximum concentration angle cannot pass through the CPC), then the sunlight is reflected to the light outlet of the CPC (3), so that it can enter the next polarizer, etc....

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Abstract

The invention relates to multi-surface compound solar concentrator based on bionics principle. It belongs to solar condensation and solar heat utilizing technical field. The apparatus includes one-class compound parabolic concentrator-CPC; polarized light device or modified Fresnel lens; secondary-class CPC; third class CPC and likes. It is a solar energy utilizing device capable of utilizing varies reflection or transmission curve surface combination to realize solar light high-density gathering and transferring.

Description

Technical field [0001] The invention relates to a solar energy utilization device capable of realizing high-density concentration and conduction of sunlight by combining multiple reflective or transmissive curved surfaces, and belongs to the technical field of solar energy concentration and solar heat utilization. Background technique [0002] Among the currently popularized solar concentrators, the single-stage CPC (Compound Parabolic Concentrator) is the main one, especially the two-dimensional symmetrical trough CPC. The biggest advantage of this type of device is that it can achieve a better light-gathering effect without accurately tracking the sun. However, this type of solar concentrator can only provide users with initially concentrated sunlight, and the general concentration ratio is below 10. When users need sunlight with a higher energy flux density, such as solar green lighting, concentrated energy storage, etc., such concentrators generally cannot meet the requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/12F24S23/71
CPCY02E10/42Y02E10/40
Inventor 郑宏飞何开岩陶涛
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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