Effect of soiling in CPV systems

Vivar García, Marta and Herrero Martin, Rebeca and Anton Hernandez, Ignacio and Martinez Moreno, Francisco and Moreton Villagra, Rodrigo and Sala Pano, Gabriel and Blakers, Andrew W. and Smeltink, John (2010). Effect of soiling in CPV systems. "Solar Energy", v. 84 (n. 7); pp. 1327-1335. ISSN 0038-092X.


Title: Effect of soiling in CPV systems
  • Vivar García, Marta
  • Herrero Martin, Rebeca
  • Anton Hernandez, Ignacio
  • Martinez Moreno, Francisco
  • Moreton Villagra, Rodrigo
  • Sala Pano, Gabriel
  • Blakers, Andrew W.
  • Smeltink, John
Item Type: Article
Título de Revista/Publicación: Solar Energy
Date: July 2010
Volume: 84
Freetext Keywords: Concentration; Soiling; Losses; Field performance
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Electrónica Física
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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The effect of soiling in flat PV modules has been already studied, causing a reduction of the electrical output of 4% on average. For CPV's, as far as soiling produces light scattering at the optical collector surface, the scattered rays should be definitively lost because they cannot be focused onto the receivers again. While the theoretical study becomes difficult because soiling is variable at different sites, it becomes easier to begin the monitoring of the real field performance of concentrators and then raise the following question: how much does the soiling affect to PV concentrators in comparison with flat panels?? The answers allow to predict the PV concentrator electrical performance and to establish a pattern of cleaning frequency. Some experiments have been conducted at the IES-UPM and CSES-ANU sites, consisting in linear reflective concentration systems, a point focus refractive concentrator and a flat module. All the systems have been measured when soiled and then after cleaning, achieving different increases of ISC. In general, results show that CPV systems are more sensitive to soiling than flat panels, accumulating losses in ISC of about 14% on average in three different tests conducted at IESUPM and CSES-ANU test sites in Madrid (Spain) and Canberra (Australia). Some concentrators can reach losses up to 26% when the system is soiled for 4 months of exposure.

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Item ID: 22357
DC Identifier: http://oa.upm.es/22357/
OAI Identifier: oai:oa.upm.es:22357
Deposited by: Memoria Investigacion
Deposited on: 11 Feb 2014 17:36
Last Modified: 21 Apr 2016 14:15
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