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首页> 外文会议>Nonimaging optics: Efficient design for illumination and solar concentration VI >Thermodynamic efficiency of nonimaging concentrators
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Thermodynamic efficiency of nonimaging concentrators

机译：非成像浓缩器的热力学效率

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The purpose of a nonimaging concentrator is to transfer maximal flux from the phase space of a source to that of a target. A concentrator's performance can be expressed relative to a thermodynamic reference. We discuss consequences of Fermat's principle of geometrical optics. We review etendue dilution and optical loss mechanisms associated with nonimaging concentrators, especially for the photovoltaic (PV) role. We introduce the concept of optical thermodynamic efficiency which is a performance metric combining the first and second laws of thermodynamics. The optical thermodynamic efficiency is a comprehensive metric that takes into account all loss mechanisms associated with transferring flux from the source to the target phase space, which may include losses due to inadequate design, non-ideal materials, fabrication errors, and less than maximal concentration. As such, this metric is a gold standard for evaluating the performance of nonimaging concentrators. Examples are provided to illustrate the use of this new metric. In particular we discuss concentrating PV systems for solar power applications.
机译：非成像集中器的目的是将最大通量从光源的相空间传输到目标的相空间。浓缩器的性能可以相对于热力学参考来表达。我们讨论了费马几何光学原理的后果。我们审查了与非成像聚光器有关的集光率稀释和光损耗机制，特别是对于光伏（PV）的作用。我们介绍了光学热力学效率的概念，它是结合了热力学第一定律和第二定律的性能指标。光学热力学效率是一个综合的指标，它考虑了与将通量从源转移到目标相空间有关的所有损耗机制，其中可能包括由于设计不足，材料不理想，制造错误以及小于最大浓度而引起的损耗。 。这样，该度量标准是评估非成像集中器性能的金标准。提供了一些示例来说明此新指标的用法。特别是，我们讨论了用于太阳能应用的聚光光伏系统。

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