AIMS Energy, 2015, 3(4): 666-678. doi: 10.3934/energy.2015.4.666

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Methodology for the characterization of the humidity behavior inside CPV modules

ENEA—Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Portici Research Center, P.le E.Fermi, 1 - 80055 Portici (NA), Italy

In this study the characterization of the humidity behavior inside concentrating photovoltaic (CPV) modules is addressed. To this purpose, several experimental tests have been carried out by using two different CPV modules and three different breathers, collecting in each analyzed case the evolution of temperature, relative and specific humidity of the air volume contained inside the module for many days. Results indicates that, for each of the CPV modules analyzed, it is possible to construct a characteristic curve in the temperature-specific humidity psychrometric chart, that can be used for estimating the specific humidity of the air inside the CPV module as a function of the internal air temperature. The characteristic curve can be also used to estimate the saturation temperature of the air inside the CPV module, and consequently to detect the eventuality of moisture condensation during cloudy days or night-time, namely when the temperature of the air inside the module is low and reaches the external ambient one. This methodology can be used in CPV modules design for the choice of the breather and of the construction materials, in order to obtain a saturation temperature as low as possible.
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1. Hülsmann P, Weiss KA (2015) Simulation of water ingress into PV-modules: IEC-testing versus outdoor exposure. Sol Energ 115: 347-353.    

2. Hülsmann P, Weiß KA, Köhl M (2012) Temperature-dependent water vapour and oxygen permeation through different polymeric materials used in photovoltaic-modules. Progress in Photovoltaics: Res Appl 22: 415-421.

3. Kempe MD (2006) Modeling of rates of moisture ingress into photovoltaic modules. Sol Energ Mater Sol Cell 90: 2720-2738.    

4. Hülsmann P, Philipp D, Köhl M (2009) Measuring temperature-dependent water vapor and gas permeation through high barrier films. Rev Sci Instrum 80: 113901.    

5. Hülsmann P, Heck M, Köhl M (2013) Simulation of Water Vapor Ingress into PV-Modules under Different Climatic Conditions. J Mater 2013. Available from: http://dx.doi.org/10.1155/2013/102691.

6. Vogt A, Peharz G, Jaus J, et al. (2006) Degradation Studies on FLATCON® Modules and Assemblies, 21st European Photovoltaic Solar Energy Conference, Dresden, Germany.

7. Kempe M, Dameron A, Reese M (2013) Evaluation of moisture ingress from the perimeter of photovoltaic modules. Prog Photovol Res Appl 22: 1159-1171.

8. Reisner E, Stollwerck G, Peerlings H, et al. (2006) Humidity in a solar module - horror vision or negligible, 21st European Photovoltaic Solar Energy Conference, Dresden, Germany.

9. Kempe MD (2005) Control of Moisture Ingress into Photovoltaic Modules, 31st IEEE Photovoltaics Specialists Conference and Exhibition Lake Buena Vista, Florida.

10. Mikami R, Toya K, Saito K, et al. (2015) CPV module's reliability test results and the degradation by glass dimming, Proceeding of 11th International Conference on Concentrator Photovoltaic Systems-Aix Les Bains.

11. Kennedy CE, Terwilliger K, Jorgensen GJ (2007) Further analysis of accelerated exposure testing of thin-glass mirror matrix, Proceedings of ES2007 Energy Sustainability 2007, Long Beach, California.

12. Fucci R, Cancro C, Graditi G, et al. (2011) ENEA's activities on C-PV technology, Proceeding of International Conference in Clean Electrical Power, Ischia, Italy.

13. Cancro C, Graditi G, Fucci R, et al. (2015) Characterization And Validation Tests On Ecosole C-Modules First Prototypes, Proceeding of 11th International Conference on Concentrator Photovoltaic Systems-Aix Les Bains.

Copyright Info: © 2015, Luigi Mongibello, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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