From Event: SPIE Optical Engineering + Applications, 2017
We investigate the relationship between the number of segments and the optical transmission of a CPC approximated by equal length segments whose start and end points lie along the CPC profile. We also investigate a separate method for generating CPC-like profiles by adjusting the angle of each segment to satisfy the edge-ray principle. Three variations of this method are examined where the edge-ray condition is taken from the start, mid, and end points of each segment. A flux efficiency (FE) to compare concentrators, which combines the concentration ratio and optical efficiency, is introduced and directly relates to the maximum achievable flux on the absorber. We demonstrate that the FE defined is another way to look at the compromises one makes for a geometric concentrator designed under real-world constraints.
Bennett Widyolar, Lun Jiang, and Roland Winston, "Thermodynamic investigation of the segmented CPC," Proc. SPIE 10379, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIV, 103790L (Presented at SPIE Optical Engineering + Applications: August 07, 2017; Published: 7 September 2017); https://doi.org/10.1117/12.2276711.
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