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  4. Design of a light confining concentrator for a solar photochemical reactor and upper bound to the method
 
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conference paper

Design of a light confining concentrator for a solar photochemical reactor and upper bound to the method

Karamata, Boris  
•
Andersen, Marilyne  
Winston, R
•
Gordon, Jm
2016
Nonimaging Optics: Efficient Design For Illumination And Solar Concentration Xiii-Commemorating The 50Th Anniversary Of Nonimaging Optics
Conference on Nonimaging Optics - Efficient Design for Illumination and Solar Concentration XIII -Commemorating the 50th Anniversary of Nonimaging Optics

Optical concentration obtained by light confinement bears unique features that can increase the efficiency of a photochemical reactor. A suitable implementation of this method for a solar reactor is a series of parallel tubular receivers sealed in a slab-shape reflective cavity, in which light is trapped thanks to a self-adaptive optical filtering mechanism. To predict the concentration in such a generic configuration, we had previously established an analytical model based on idealistic assumptions, which are not valid in our real configuration. Here, we use analytical calculations and numerical ray-trace simulations to investigate how the finite size of the latter impacts the prediction of our model and extrapolate design guidelines for minimal departure from ideality. We apply these guidelines to design an optical concentrator maximizing flux density on tubular receivers and discuss the upper bound to the method, as well as the benefits from its unique features. Accounting for practical and technological limitations, this method can provide optical concentration in the order of ten suns in our generic configuration.

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Type
conference paper
DOI
10.1117/12.2238313
Web of Science ID

WOS:000391223600006

Author(s)
Karamata, Boris  
•
Andersen, Marilyne  
Editors
Winston, R
•
Gordon, Jm
Date Issued

2016

Publisher

Spie-Int Soc Optical Engineering

Publisher place

Bellingham

Published in
Nonimaging Optics: Efficient Design For Illumination And Solar Concentration Xiii-Commemorating The 50Th Anniversary Of Nonimaging Optics
ISBN of the book

978-1-5106-0301-1

978-1-5106-0302-8

Total of pages

9

Series title/Series vol.

Proceedings of SPIE

Volume

9955

Start page

99550A

Subjects

Optical concentration

•

solar energy

•

photochemical reactor

•

homogeneous illumination

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LIPID  
Event nameEvent placeEvent date
Conference on Nonimaging Optics - Efficient Design for Illumination and Solar Concentration XIII -Commemorating the 50th Anniversary of Nonimaging Optics

San Diego, CA

AUG 28-29, 2016

Available on Infoscience
February 17, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/134487
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