From Event: SPIE Optical Engineering + Applications, 2016
The project team of University of California at Merced (UC-Merced), Gas Technology Institute (GTI) and MicroLink
Devices Inc. (MicroLink) are developing a hybrid solar system using a nonimaging compound parabolic concentrator
(CPC) that maximizes the exergy by delivering direct electricity and on-demand heat. The hybrid solar system
technology uses secondary optics in a solar receiver to achieve high efficiency at high temperature, collects heat in
particles and uses reflective liftoff cooled double junction (2J) InGaP/GaAs solar cells with backside infrared (IR)
reflectors on the secondary optical element to raise exergy efficiency. The nonimaging optics provides additional
concentration towards the high temperature thermal stream and enables it to operate efficiently at 650 °C while the solar
cell is maintained at 40 °C to operate as efficiently as possible.
Roland Winston, Lun Jiang, Mahmoud Abdelhamid, Bennett K. Widyolar, Jonathan Ferry, David Cygan, Hamid Abbasi, Alexandr Kozlov, Alexander Kirk, Victor Elarde, and Mark Osowski, "Nonimaging optics maximizing exergy for hybrid solar system," Proc. SPIE 9955, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XIII—Commemorating the 50th Anniversary of Nonimaging Optics, 99550N (Presented at SPIE Optical Engineering + Applications: August 29, 2016; Published: 7 September 2016); https://doi.org/10.1117/12.2239139.
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