Share This Article:

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

Abstract Full-Text HTML Download Download as PDF (Size:501KB) PP. 37-43
DOI: 10.4236/eng.2013.51B007    4,501 Downloads   6,611 Views   Citations

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.

 

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

B. Ricardo, D. Henrik, G. Niko, G. João, G. Christian, C. Luis, M. Chabu and K. Björn, "Measurements of the Electrical Incidence Angle Modifiers of an Asymmetrical Photovoltaic/Thermal Compound Parabolic Concentrating-Collector," Engineering, Vol. 5 No. 1B, 2013, pp. 37-43. doi: 10.4236/eng.2013.51B007.

References

[1] Alanod, reflector manufacturer, 2012. http://alanod.com.
[2] L. R. Bernardo, H. Davidsson, B. Karlsson, "Performance Evaluation of a High Solar Fraction CPC-Collector System", Japanese Society of Mechanical Engineers - Journal of Environment and Engineering, 2011, Vol. 6, pp. 680-692. http://dx.doi.org/10.1299/jee.6.680
[3] L. R. Bernardo, B. Perers, H. H?kansson, B. Karlsson, "Performance Evaluation of Low Concentrating Photovoltaic/Thermal Systems: A Case Study from Sweden, Solar Energy, 2011, Vol. 85, pp. 1499-1510. http://dx.doi.org/10.1016/j.solener.2011.04.006
[4] S. Wenham, M. Green, M. Watt, R. Corkish, "Applied Photovoltaics", 2nd edition, Earthscan, London, 2007, ISBN 978-1844074013.
[5] N. Gentile et al., "Construction of a small scale laboratory for solar collectors and solar cells in a developing country", Power and Energy Engineering Conference and Engineering, Sanya, China, Dec 31, 2012 - Jan 2, 2013, unpublished.

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.