From Event: SPIE Optical Engineering + Applications, 2016
In this paper we explore the use of non-imaging optics for rooftop solar concentrators. Specifically, we focus on
compound parabolic concentrators (CPCs), which form an ideal shape for cylindrical thermal absorbers, and for linear
PV cells (allowing the use of more expensive but more efficient cells). Rooftops are ideal surfaces for solar collectors as
they face the sky and are generally free, unused space. Concentrating solar radiation adds thermodynamic value to
thermal collectors (allowing the attainment of higher temperature) and can add efficiency to PV electricity generation.
CPCs allow that concentration over the day without the need for tracking. Hence they have become ubiquitous in
applications requiring low concentration.
Gary Rosengarten, Cameron Stanley, Dave Ferrari, Andrew Blakers, and Tom Ratcliff, "The rise of non-imaging optics for rooftop solar collectors," Proc. SPIE 9955, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIII—Commemorating the 50th Anniversary of Nonimaging Optics, 99550K (Presented at SPIE Optical Engineering + Applications: August 29, 2016; Published: 7 September 2016); https://doi.org/10.1117/12.2237415.
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