CDC non-tracking solar compound concentrator and array thereof

A concentrator, tracking-free technology, applied in the field of solar energy applications, can solve the problems of low concentration ratio, poor availability, and poor condensing effect of CPC concentrators, and achieves high utilization rate of light energy, simple generation method, The effect of high concentration ratio

Inactive Publication Date: 2012-11-28
赵淑明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Throughout the research and development of solar concentrators at home and abroad, there are common deficiencies. An accurate automatic tracking system can accurately project the converged light onto the light collector. Second, it needs an accurate light-gathering surface to converge the light into points or lines and then project it onto the light collector. Third, it needs Only with good rigidity and precise tracking bracket and transmission machinery can the above tracking and focusing be effective.
Fourth, the service life of the parts of the whole system of the concentrator should be similar, such as 15 years, otherwise once some parts are damaged, the normal operation of the whole system cannot be guaranteed
[0005] However, by adopting such a light concentrator, although the structure of the light concentrator is simplified, the precision requirement of light concentration and the manufacturing cost are reduced, but due to the CPC concentrator The light-gathering ratio is low and the availability is poor, and the trough-type cylindrical mirror has poor light-gathering effect under the condition of free tracking, which leads to its slow commercial development

Method used

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  • CDC non-tracking solar compound concentrator and array thereof
  • CDC non-tracking solar compound concentrator and array thereof
  • CDC non-tracking solar compound concentrator and array thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Figure 6 It is the composite concentrating curve and concentrator end view applied to flat ground or flat roof under the completely fixed condition of the present invention. Application requirements: first, it is completely fixed and free from tracking; second, it is placed on a flat roof; third, the application site is 30.5 degrees north latitude. Fourth, the focal length can be enlarged appropriately. The technical parameters selected according to the application requirements are: focal length: 1000MM, the maximum focusing ratio is 1.9 times, the critical angle of total reflection is 47 degrees, the concentrator is placed in the east and west, and the incident sunlight can be received all year round under completely fixed conditions.

[0047] The technical implementation scheme of the tracking-free compound concentrator of this embodiment is: according to the parabolic equation Y=X 2 / 4F=X 2 / 4000 Make a semi-parabolic coordinate map with a focal lengt...

Embodiment 2

[0049] Figure 7 The present invention is applied to the compound concentrating curve of the sun-facing slope roof and the end view of the compound concentrator under completely fixed conditions. Application requirements: First, it is completely fixed and free from tracking. The second is that the placement site is a sunny slope roof with a slope of 40°. The third is that the application area is 30.5° north latitude. Fourth, in order not to affect the architectural landscape, the thickness of the generated concentrator shall not exceed 150mm. According to application requirements; selected parabolic technical parameters: focal length = 100mm, maximum concentration ratio = 1.9 times, critical angle of total reflection ≥ 47°. In fully fixed condition, it is guaranteed to receive incoming sunlight all year round. This embodiment is implemented through the following technical solutions: according to the parabolic equation y=x 2 / 4F=x 2 / 400, make a parabolic coordin...

Embodiment 3

[0051] Figure 8 It is the composite concentrating curve and the end view of the concentrator applied to the sun-facing vertical wall under the adjustable tracking-free condition of the present invention. Application requirements: First, it can be adjusted without tracking, and it can be adjusted twice a year. Second, the placement site is a sunny vertical wall. The third is not to affect the wall landscape, and the thickness of the phalanx complex array is required to be no more than 10cm. Fourth, the application site is 30.5° north latitude. According to the application requirements, the technical parameters of the tracking-free composite focusing curve of the present invention are selected: the parabolic focal length F=100mm, the focusing ratio X / F=3 times, and the critical angle of total reflection is 33.7°. year to collect incident sunlight.

[0052] This embodiment is implemented through the following technical solutions:

[0053] According to throwing equatio...

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PUM

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Abstract

The invention discloses a CDC non-tracking solar compound concentrator. A half of a parabola and a half of a perfect circle curve are compounded to generate a compound concentration curve; the generated compound concentration curve is taken as an end section of the compound concentrator and a segment is cut out by parallel moving in the vertical direction of the end section by any length; and the cut-out segment is taken as the non-tracking solar compound concentrator generated by the compound concentration curve, wherein the cut-out end section is the end section of the concentrator; a curved surface formed by parallel moving of the compound curve segment is taken as the compound concentration curved surface of the concentrator; and a plane formed by parallel moving of a straight segment is taken as the concentration surface of the compound concentration curved surface.

Description

technical field [0001] The invention relates to the field of solar energy applications, in particular to a non-light-image-free tracking solar composite concentrator and an array thereof. Background technique [0002] Solar energy is the most abundant renewable energy on the earth. Since the development of solar energy utilization technology, its expensive development and utilization cost has become an obstacle to large-scale popularization. The key to cost-effective use of solar energy is whether the concentration ratio and tracking accuracy can be improved. [0003] Due to the low density of solar energy, its peak value does not exceed 1KW / ㎡, and is affected by the sun's altitude angle, azimuth angle, weather, etc., so the utilization rate of solar energy is very low. In order to improve the utilization rate of solar energy, people use solar concentrators to increase the solar radiation density. . Concentrators mainly include refraction, reflection, hybrid and other type...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B19/00F24J2/06F24J2/46F24S23/00
CPCY02E10/44
Inventor 赵淑明赵石林
Owner 赵淑明
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