Reflector materials for two-dimensional low-concentrating photovoltaic systems: the effect of specular versus diffuse reflectance efficiency on the module
(2005) In Progress in Photovoltaics 13(3). p.217-233- Abstract
- Photovoltaic modules in two-dimensional low-concentrating systems with specular parabolic reflectors often experience high local irradiance that causes high local currents and cell temperatures. This generally results in power losses. The use of low-angle scattering reflectors gives a smoother irradiance distribution, which results in a higher fill factor. In order to study how the choice of reflector material influences system performance, two different reflector materials (anodised aluminium and lacquered rolled aluminium laminated on a plastic substrate) were compared. The total and diffuse reflectance spectra of the reflector materials were measured, the integrated hemispherical and specular solar reflectance values calculated, and the... (More)
- Photovoltaic modules in two-dimensional low-concentrating systems with specular parabolic reflectors often experience high local irradiance that causes high local currents and cell temperatures. This generally results in power losses. The use of low-angle scattering reflectors gives a smoother irradiance distribution, which results in a higher fill factor. In order to study how the choice of reflector material influences system performance, two different reflector materials (anodised aluminium and lacquered rolled aluminium laminated on a plastic substrate) were compared. The total and diffuse reflectance spectra of the reflector materials were measured, the integrated hemispherical and specular solar reflectance values calculated, and the angular distributions of scattered light investigated. Two geometrically identical 3 x concentrating photovoltaic systems with semi-parabolic over edge reflectors of the different materials were tested outdoors. While the anodised aluminium reflector, which had higher hemispherical and specular solar reflectance, resulted in a higher short-circuit current, the low-angle scattering lacquered foil gave a higher fill factor, due to a smoother image of the sun on the module surface, and an equally high calculated annual electricity production. Given its low price, the latter reflector should thus be more cost-effective in low-concentrating photovoltaic systems. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/244625
- author
- Hall, M ; Roos, A and Karlsson, Björn LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- reflector laminate, aluminium, anodised, fill factor, low-angle scattering, optical properties, reflector materials, photovoltaic systems, parabolic concentrators
- in
- Progress in Photovoltaics
- volume
- 13
- issue
- 3
- pages
- 217 - 233
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000228564200005
- scopus:17444426660
- ISSN
- 1099-159X
- DOI
- 10.1002/pip.588
- language
- English
- LU publication?
- yes
- id
- 1b496c22-ebe6-41a4-8337-9ffe8412db79 (old id 244625)
- date added to LUP
- 2016-04-01 11:38:24
- date last changed
- 2022-01-26 08:00:00
@article{1b496c22-ebe6-41a4-8337-9ffe8412db79,
abstract = {{Photovoltaic modules in two-dimensional low-concentrating systems with specular parabolic reflectors often experience high local irradiance that causes high local currents and cell temperatures. This generally results in power losses. The use of low-angle scattering reflectors gives a smoother irradiance distribution, which results in a higher fill factor. In order to study how the choice of reflector material influences system performance, two different reflector materials (anodised aluminium and lacquered rolled aluminium laminated on a plastic substrate) were compared. The total and diffuse reflectance spectra of the reflector materials were measured, the integrated hemispherical and specular solar reflectance values calculated, and the angular distributions of scattered light investigated. Two geometrically identical 3 x concentrating photovoltaic systems with semi-parabolic over edge reflectors of the different materials were tested outdoors. While the anodised aluminium reflector, which had higher hemispherical and specular solar reflectance, resulted in a higher short-circuit current, the low-angle scattering lacquered foil gave a higher fill factor, due to a smoother image of the sun on the module surface, and an equally high calculated annual electricity production. Given its low price, the latter reflector should thus be more cost-effective in low-concentrating photovoltaic systems.}},
author = {{Hall, M and Roos, A and Karlsson, Björn}},
issn = {{1099-159X}},
keywords = {{reflector laminate; aluminium; anodised; fill factor; low-angle scattering; optical properties; reflector materials; photovoltaic systems; parabolic concentrators}},
language = {{eng}},
number = {{3}},
pages = {{217--233}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Progress in Photovoltaics}},
title = {{Reflector materials for two-dimensional low-concentrating photovoltaic systems: the effect of specular versus diffuse reflectance efficiency on the module}},
url = {{http://dx.doi.org/10.1002/pip.588}},
doi = {{10.1002/pip.588}},
volume = {{13}},
year = {{2005}},
}