CDC non-tracking solar compound concentrator and array thereof

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...

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

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