Critical Retrospect on Conventional and Luminescent Solar Concentration Devices | Science Publications

American Journal of Environmental Sciences

Hamzah Abdul-Rahman¹  Chen Wang¹ 

关键词: Day lighting related device;    light pipe;    optical fiber;    luminescent solar concentrators;   

DOI  :  10.3844/ajessp.2010.428.437

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: Conventional solar concentrators are only sensitive for the beamradiation and they function poorly in overcast sky conditions. Even under a clear sky condition,trackers are always needed for conventional solar concentrators. Static concentrators always come witha poor concentration rate without a tracker and the light concentrated by normal Luminescent SolarConcentrators (LSC) could not be transported by optical fibers to a remote place since the lightproduced by LSCs is not a pointolite. Approach: Through a critical literature review and discussion,this article retrospects the merits and demerits of recent conventional solar concentrators andLuminescent Solar Concentrators (LSC). Results: Results summarized the limitations in current daylighting related solar concentration devices. As an approach for energy saving, daylight has adisadvantage of not being able to reach many areas of a building such as store rooms, basements andcorridors and it also brings heat gain with the light. Light pipes were designed to transport daylight tounreached areas, but light pipes have their difficulties for wiring, so that optical fibers are consideredas the best approach for the daylight transportation so far. However, the optical fiber needs a pointolitefor the light transportation. Various solar concentrators that were designed using optical approachessuch as using mirrors or lens for the solar energy concentration. Since they are only sensitive for thebeam irradiation, they function poorly in the cloudy weather and the diffuse light conditions and evenif they are under a clear sky condition, trackers are always needed. Luminescent Solar Concentrators(LSC) and some static solar concentrators were then designed as the diffuse light solution and the staticsolution, respectively. Static concentrators always come with a low concentration rate without a trackerand the light concentrated by normal LSCs could not be transported by optical fibers to a remote placesince the light produced by an LSC is not a pointolite. Conclusion/Recommendations: New solarconcentration systems need to be developed to mitigate the above-mentioned limitations. Futurestudies especially cross disciplinary researches on developing new solar concentrators in mitigatingthose limitations as discussed in this study are highly recommended.

【 授权许可】

Unknown