High angular tolerance thin profile solar concentrators designed using a wedge prism and diffraction grating

Tanant Waritanant, Sakoolkan Boonruang, Te Yuan Chung

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

This paper proposes a novel design for a high angular tolerance thin profile solar concentrator comprised of a wedge prism and diffraction gratings. A concentrated broad solar spectrum of up to 500. nm can be achieved by utilizing two diffraction gratings located on the top and bottom surfaces of the wedge prism. The gratings diffract the incident light guiding it into the wedge prism. The guided light is then projected onto the solar module located at the end face of the prism. With this coupling mechanism, the concentrator's length-to-thickness ratio can exceed 7, the maximum concentration ratio exceeds 3.77, and angular tolerance at 90% of the maximum collection efficiency can reach. ±35° and. ±3° along the two incident axes and reach. ±53° and. ±9° at 50% of the maximum collection efficiency, respectively. In addition, the polarization dependence, as a property of the one-dimensional diffraction grating, is suppressed. As a result, the conversion efficiency is enhanced 1.67 times over cases where a single grating is used.

原文???core.languages.en_GB???
頁(從 - 到)35-41
頁數7
期刊Solar Energy
87
發行號1
DOIs
出版狀態已出版 - 1月 2013

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