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Cost-effective optical fiber daylighting system using modified compound parabolic concentrators

机译：使用改进的复合抛物面聚光器的经济高效的光纤采光系统

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摘要

We present a cost-effective optical fiber daylighting system composed of modified compound parabolic concentrators (M-CPC) coupled with plastic optical fibers (POFs). An M-CPC is made by combining two conventional CPCs into one component. Our simulation results demonstrate an optical efficiency of up to 84% when the concentration ratio of the M-CPC is fixed at 100. We have also used a simulation to determine an optimal geometric structure of M-CPCs. Because of the simplicity of the M-CPC structure, a lower-cost mass production process is possible. Our quest for an optimal structure has also shown that M-CPC has high tolerance for input angle of sunlight. The high tolerance allows replacing a highly precise active sun-tracking system with a lower accuracy sun-tracking system as a cost-effective solution. A prototype of M-CPC was fabricated by laser cutting method and preliminary experiments of a sunlight concentrator using M-CPC were performed in outdoor. The good agreement between simulation results and experimental results confirm that M-CPC is designed properly. The overall system cost is also estimated. Some considerations on the economic expansion of the system in terms of efficiency are discussed. The results show that the presented optical fiber daylighting system is a strong candidate for low-price and highly efficient solution for solar energy application to building energy savings. (C) 2016 Elsevier Ltd. All rights reserved.
机译：我们提出了一种经济高效的光纤采光系统，该系统由改性复合抛物面聚光器（M-CPC）与塑料光纤（POF）组成。通过将两个常规CPC合并为一个组件来制作M-CPC。我们的仿真结果表明，当M-CPC的浓度比固定为100时，光学效率高达84％。我们还使用仿真来确定M-CPC的最佳几何结构。由于M-CPC结构的简单性，可以实现低成本的批量生产过程。我们对最佳结构的追求也表明，M-CPC对太阳光的入射角具有很高的耐受性。高容限允许使用较低精度的太阳跟踪系统替换高精度的有源太阳跟踪系统，这是一种经济高效的解决方案。通过激光切割法制造了M-CPC的原型，并在室外进行了使用M-CPC的阳光聚光器的初步实验。仿真结果与实验结果吻合良好，证明了M-CPC的设计正确。还估算了整个系统的成本。讨论了有关系统经济效率方面的一些考虑。结果表明，所提出的光纤日光系统是低成本，高效解决方案的有力候选者，该解决方案适用于太阳能节能建筑。 （C）2016 Elsevier Ltd.保留所有权利。

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