|
Title:
|
Optical performance of solar reflective concentrators: A simple method for optical assessment
|
|
Author:
|
Chemisana Villegas, Daniel; Barrau, Jérôme; Rosell Urrutia, Joan Ignasi; Abdel-Mesih, B.; Souliotis, M.; Badia Pascual, Ferran
|
|
Notes:
|
In reflective concentrating systems, mirrors play an essential role in directing and concentrating the
energy from the sun to the modules. Shortcomings like misalignment, shading or bending of mirrors, due
to their weight or wind, imply a higher probability of attenuated energy and non-uniform illumination
on the receiver. The objective of this work is to design and test a method to assess the optical quality of
solar concentrators, based on the absorber reflection method (ARM), which allows minimising the distance
from the camera to the concentrator. The proposed procedure allows the characterization of the
optical quality of reflectors when the concentrator is working at different inclinations tracking the sun’s
movement. The validation measurements were performed in a two-axis Fresnel reflective solar concentrator.
Results from the method developed were included in two numerical procedures, ray-tracing
and the sum-of-squares. From these simulations the overall effects of the optical quality and the sunshape
over the absorber were considered and compared with the measured experimental concentrated
flux distribution profile.
This work has been supported by the Spanish Science and Innovation Ministry (MICINN) under the grant ENE2010-18357 and by the 6th European Union Research Program Marie-Curie early stage research training network “Advanced solar heating and cooling for buildings e SOLNET”. |
|
Subject(s):
|
-Solar concentration
-Fresnel reflector
-Optical assessment |
|
Rights:
|
(c) Elsevier, 2013
info:eu-repo/semantics/restrictedAccess |
|
Document type:
|
article
publishedVersion |
|
Published by:
|
Elsevier
|
|
Share:
|
|
