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首页> 外文会议>Conference on high and low concentrator systems for solar energy applications >Sun to Fibers (S2F): Massively Scalable Collection and Transmission of Concentrated Solar Light for Efficient Energy Conversion and Storage
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Sun to Fibers (S2F): Massively Scalable Collection and Transmission of Concentrated Solar Light for Efficient Energy Conversion and Storage

机译：太阳到纤维（S2F）：大规模可扩展收集和传输集中式太阳光，以实现高效的能量转换和存储

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Concentrated solar energy has proven to be an efficient approach for both solar thermal energy applications and photovoltaics. Here, we propose a passive optical device, the Adiabatic Optical Coupler (AOC), that efficiently couples concentrated solar light from a primary solar concentrator into an optical fiber, enabling light collection and energy conversion/storage to be geographically separated, thus maximizing the overall system efficiency. The AOC offers secondary concentration of concentrated solar light through an adiabatic optical mode conversion process. Solar light, highly focused by this two stage concentrator, is delivered by optical fiber to either be subsequently converted to electricity or thermally stored. The ability to transport high energy light flux eliminates the need for high temperature working fluids in solar-thermal systems. In order to design the AOC and related peripherals, we used various modeling tools to cover different optical regimes at macroscopic and microscopic scales. We demonstrated a set of optical thin films with spatially varied refractive index up to 3 and negligible optical absorption by using proprietary sputtering technique to fabricate the AOC. We further studied the films using experimental measurements and theoretical analysis to optimize their optical properties. Preliminary cost analysis suggests that solar thermal power generation systems that employ our S2F concept could offer the cost and efficiency required to achieve the 2020 SunShot initiative levelized cost of electricity (LCOE) target. Success of this endeavor could change the energy conversion paradigm, and allow massively scalable concentrated solar energy utilization.
机译：事实证明，对于太阳能热能应用和光伏技术而言，集中式太阳能是一种有效的方法。在这里，我们提出了一种无源光学设备，即绝热光耦合器（AOC），该设备可将来自一次太阳能集中器的集中太阳光有效地耦合到光纤中，从而使光收集和能量转换/存储在地理位置上得以分离，从而使整体光洁度最大化。系统效率。 AOC通过绝热光学模式转换过程提供二次集中的太阳光聚集。由两级聚光器高度聚焦的太阳光通过光纤传输，然后转换为电能或进行热存储。传输高能光束的能力消除了对太阳热系统中高温工作流体的需求。为了设计AOC和相关外围设备，我们使用了各种建模工具来涵盖宏观和微观尺度上的不同光学方案。通过使用专有的溅射技术制造AOC，我们展示了一组光学薄膜，这些薄膜的空间变化折射率高达3，并且光吸收可以忽略不计。我们通过实验测量和理论分析进一步研究了薄膜，以优化其光学性能。初步成本分析表明，采用我们的S2F概念的太阳能热发电系统可以提供实现2020 SunShot倡议的平均电费（LCOE）目标所需的成本和效率。这项努力的成功可能会改变能源转换的范式，并允许大规模可扩展的集中太阳能利用。

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