Smart Glass Coatings for Innovative BIPV Solutions

The glossy appearance of the cover glass of a photovoltaic module is mainly responsible for giving the module a mirroring effect, which is often disturbing in the case of building integrated photovoltaic (BIPV) façade applications. In this work, an innovative approach is presented to reduce the glar...

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Autores principales:	Roman Trattnig, Gianluca Cattaneo, Yuliya Voronko, Gabriele C. Eder, Dieter Moor, Florian Jamschek, Thomas Buchsteiner
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	BIPV facade coating glare reduction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/b22724ed9496454e9904d349d280c602
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id	oai:doaj.org-article:b22724ed9496454e9904d349d280c602
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spelling	oai:doaj.org-article:b22724ed9496454e9904d349d280c6022021-11-25T19:04:14ZSmart Glass Coatings for Innovative BIPV Solutions10.3390/su1322127752071-1050https://doaj.org/article/b22724ed9496454e9904d349d280c6022021-11-01T00:00:00Zhttps://www.mdpi.com/2071-1050/13/22/12775https://doaj.org/toc/2071-1050The glossy appearance of the cover glass of a photovoltaic module is mainly responsible for giving the module a mirroring effect, which is often disturbing in the case of building integrated photovoltaic (BIPV) façade applications. In this work, an innovative approach is presented to reduce the glare of BIPV modules by applying surface coatings to the front glass of the module. Three different glass coating technologies, applied on the outer surface of the photovoltaic module, were investigated: inkjet printing, screen printing, and sol-gel spray coating. The coatings, applied by these technologies in three different colours (grey, anthracite, and terracotta), were characterized with respect to their adhesion, light transmission, and reflection. Their chemical and physical stability after stress impact (condensed water resistance and chemical resistance against acids and salt-fog) was also investigated. The durability of these coatings was further evaluated after performing environmental simulations with artificial sunlight (xenon weathering) on coated glass. Additionally, accelerated aging tests (damp-heat testing, temperature cycling) were performed on the test modules to assess their performance stability. For those coatings, where no stress-induced changes in colour or the optical appearance of the module surface were detected, the potential for the architectural integration of the modules into building facades is high. A minimum glare of less than 0.1% of the specular reflection could be achieved. On the basis of the results of the optical characterization and the durability tests, grey screen-printed BIPV solar modules were installed in a demonstrator test façade. The high electrical performance, resulting in only a 10–11% performance decrease compared to the noncoated reference modules, perfectly showed the suitability of screen-printing in future applications for coloured and glare-reduced BIPV installations.Roman TrattnigGianluca CattaneoYuliya VoronkoGabriele C. EderDieter MoorFlorian JamschekThomas BuchsteinerMDPI AGarticleBIPVfacadecoatingglare reductionEnvironmental effects of industries and plantsTD194-195Renewable energy sourcesTJ807-830Environmental sciencesGE1-350ENSustainability, Vol 13, Iss 12775, p 12775 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	BIPV facade coating glare reduction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350
spellingShingle	BIPV facade coating glare reduction Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Roman Trattnig Gianluca Cattaneo Yuliya Voronko Gabriele C. Eder Dieter Moor Florian Jamschek Thomas Buchsteiner Smart Glass Coatings for Innovative BIPV Solutions
description	The glossy appearance of the cover glass of a photovoltaic module is mainly responsible for giving the module a mirroring effect, which is often disturbing in the case of building integrated photovoltaic (BIPV) façade applications. In this work, an innovative approach is presented to reduce the glare of BIPV modules by applying surface coatings to the front glass of the module. Three different glass coating technologies, applied on the outer surface of the photovoltaic module, were investigated: inkjet printing, screen printing, and sol-gel spray coating. The coatings, applied by these technologies in three different colours (grey, anthracite, and terracotta), were characterized with respect to their adhesion, light transmission, and reflection. Their chemical and physical stability after stress impact (condensed water resistance and chemical resistance against acids and salt-fog) was also investigated. The durability of these coatings was further evaluated after performing environmental simulations with artificial sunlight (xenon weathering) on coated glass. Additionally, accelerated aging tests (damp-heat testing, temperature cycling) were performed on the test modules to assess their performance stability. For those coatings, where no stress-induced changes in colour or the optical appearance of the module surface were detected, the potential for the architectural integration of the modules into building facades is high. A minimum glare of less than 0.1% of the specular reflection could be achieved. On the basis of the results of the optical characterization and the durability tests, grey screen-printed BIPV solar modules were installed in a demonstrator test façade. The high electrical performance, resulting in only a 10–11% performance decrease compared to the noncoated reference modules, perfectly showed the suitability of screen-printing in future applications for coloured and glare-reduced BIPV installations.
format	article
author	Roman Trattnig Gianluca Cattaneo Yuliya Voronko Gabriele C. Eder Dieter Moor Florian Jamschek Thomas Buchsteiner
author_facet	Roman Trattnig Gianluca Cattaneo Yuliya Voronko Gabriele C. Eder Dieter Moor Florian Jamschek Thomas Buchsteiner
author_sort	Roman Trattnig
title	Smart Glass Coatings for Innovative BIPV Solutions
title_short	Smart Glass Coatings for Innovative BIPV Solutions
title_full	Smart Glass Coatings for Innovative BIPV Solutions
title_fullStr	Smart Glass Coatings for Innovative BIPV Solutions
title_full_unstemmed	Smart Glass Coatings for Innovative BIPV Solutions
title_sort	smart glass coatings for innovative bipv solutions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b22724ed9496454e9904d349d280c602
work_keys_str_mv	AT romantrattnig smartglasscoatingsforinnovativebipvsolutions AT gianlucacattaneo smartglasscoatingsforinnovativebipvsolutions AT yuliyavoronko smartglasscoatingsforinnovativebipvsolutions AT gabrieleceder smartglasscoatingsforinnovativebipvsolutions AT dietermoor smartglasscoatingsforinnovativebipvsolutions AT florianjamschek smartglasscoatingsforinnovativebipvsolutions AT thomasbuchsteiner smartglasscoatingsforinnovativebipvsolutions
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Smart Glass Coatings for Innovative BIPV Solutions

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