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Measurements of the Electrical Incidence Angle Modifiers of an Asymmetrical Photovoltaic/Thermal Compound Parabolic Concentrating-Collector

Bernardo, Ricardo LU orcid ; Davidsson, Henrik LU ; Gentile, Niko LU ; Gomes, João ; Gruffman, Christian ; Chea, Luís ; Chabu, Mumba and Karlsson, Björn LU (2013) In Engineering 5(1B). p.37-43
Abstract
Reflector edges, sharp acceptance angles and by-pass diodes introduce large variations in the electrical performance of asymmetrical concentrating photovoltaic/thermal modules over a short incidence angle interval. It is therefore important to quantify these impacts precisely. The impact on the electrical performance of the optical properties of an asymmetrical photovoltaic/thermal CPC-collector was measured in Maputo, Mozambique. The measurements were carried out with the focus on attaining a high resolution incidence angle modifier in both the longitudinal and transversal directions, since large variations were expected over small angle intervals. A detailed analysis of the contribution of the diffuse radiation to the total output was... (More)
Reflector edges, sharp acceptance angles and by-pass diodes introduce large variations in the electrical performance of asymmetrical concentrating photovoltaic/thermal modules over a short incidence angle interval. It is therefore important to quantify these impacts precisely. The impact on the electrical performance of the optical properties of an asymmetrical photovoltaic/thermal CPC-collector was measured in Maputo, Mozambique. The measurements were carried out with the focus on attaining a high resolution incidence angle modifier in both the longitudinal and transversal directions, since large variations were expected over small angle intervals. A detailed analysis of the contribution of the diffuse radiation to the total output was also carried out. The solar cells have an electrical efficiency of 18% while the maximum measured electrical efficiency of the collector was 13.9 % per active glazed area and 20.9 % per active cell area, at 25 °C. Such data make it possible to quantify not only the electrical performance for different climatic and operating conditions but also to determine potential improvements to the collector design. The electrical output can be increased by a number of different measures, e.g. removing the outermost cells, turning the edge cells 90°, dividing each receiver side into three or four parts and directing the tracking, when used, along a north-south axis. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
PVT hybrid, CPC-collector, incidence angle modifier, asymmetric collector, electrical efficiency
in
Engineering
volume
5
issue
1B
pages
37 - 43
publisher
Scientific Research Publishing (SCIRP)
ISSN
1947-394X
DOI
10.4236/eng.2013.51B007
project
International Energy Agency. Solar Heating and Cooling Programme
language
English
LU publication?
yes
id
9dd81b48-8316-4ced-8e81-5e0ee7fcb5bd (old id 3364803)
alternative location
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=26600
date added to LUP
2016-04-01 10:42:38
date last changed
2024-06-11 12:00:27
@article{9dd81b48-8316-4ced-8e81-5e0ee7fcb5bd,
  abstract     = {{Reflector edges, sharp acceptance angles and by-pass diodes introduce large variations in the electrical performance of asymmetrical concentrating photovoltaic/thermal modules over a short incidence angle interval. It is therefore important to quantify these impacts precisely. The impact on the electrical performance of the optical properties of an asymmetrical photovoltaic/thermal CPC-collector was measured in Maputo, Mozambique. The measurements were carried out with the focus on attaining a high resolution incidence angle modifier in both the longitudinal and transversal directions, since large variations were expected over small angle intervals. A detailed analysis of the contribution of the diffuse radiation to the total output was also carried out. The solar cells have an electrical efficiency of 18% while the maximum measured electrical efficiency of the collector was 13.9 % per active glazed area and 20.9 % per active cell area, at 25 °C. Such data make it possible to quantify not only the electrical performance for different climatic and operating conditions but also to determine potential improvements to the collector design. The electrical output can be increased by a number of different measures, e.g. removing the outermost cells, turning the edge cells 90°, dividing each receiver side into three or four parts and directing the tracking, when used, along a north-south axis.}},
  author       = {{Bernardo, Ricardo and Davidsson, Henrik and Gentile, Niko and Gomes, João and Gruffman, Christian and Chea, Luís and Chabu, Mumba and Karlsson, Björn}},
  issn         = {{1947-394X}},
  keywords     = {{PVT hybrid; CPC-collector; incidence angle modifier; asymmetric collector; electrical efficiency}},
  language     = {{eng}},
  number       = {{1B}},
  pages        = {{37--43}},
  publisher    = {{Scientific Research Publishing (SCIRP)}},
  series       = {{Engineering}},
  title        = {{Measurements of the Electrical Incidence Angle Modifiers of an Asymmetrical Photovoltaic/Thermal Compound Parabolic Concentrating-Collector}},
  url          = {{http://dx.doi.org/10.4236/eng.2013.51B007}},
  doi          = {{10.4236/eng.2013.51B007}},
  volume       = {{5}},
  year         = {{2013}},
}