Structural Safety of Photovoltaic Modules in the Building Envelope

The mechanical performance of photovoltaic modules has not been adequately characterized for use as glazing product in the building envelope. As a result, the modules are subject to individual approval by the building authorities in many building-integrated applications. This paper presents experim...

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Autor principal:	C. Hemmerle
Formato:	article
Lenguaje:	EN
Publicado:	Challenging Glass Conference 2016
Materias:	Photovoltaics bending strength residual strength four point bending approval laminated safety glass Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/e0ec3e87eeec449090258ada6b0ee333
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spelling	oai:doaj.org-article:e0ec3e87eeec449090258ada6b0ee3332021-12-04T05:12:28ZStructural Safety of Photovoltaic Modules in the Building Envelope10.7480/cgc.5.22442589-8019https://doaj.org/article/e0ec3e87eeec449090258ada6b0ee3332016-06-01T00:00:00Zhttps://proceedings.challengingglass.com/index.php/cgc/article/view/198https://doaj.org/toc/2589-8019 The mechanical performance of photovoltaic modules has not been adequately characterized for use as glazing product in the building envelope. As a result, the modules are subject to individual approval by the building authorities in many building-integrated applications. This paper presents experimental research on glass based photovoltaic modules, analyzing their mechanical properties in comparison with regulated construction products. The focus is on the influence of photovoltaic thin-film coatings on the bending strength of the float glass used as a substrate or superstrate and on the post-breakage behavior of glass-glass modules. The four-point bending test according to EN 1288-3 was modified in terms of specimen dimensions in order to test full-size photovoltaic glass panes. The modified set-up was verified as a suitable and simple test method to determine and confirm strength values. Edge ablation was found to reduce glass strength rather than the PV coating and cell scribing processes, but the reduction is less than 10 % and the minimum strength value of float glass can still be met. Residual strength testing of glass-glass photovoltaic modules in different load and temperature scenarios showed that the integration of crystalline silicon cells as well as thin-film solar cells improves the post-breakage behavior of glazings. A critical point may be mechanical failure within the layers of thin-film cells on glass associated with the potential danger of broken glass pieces falling down. Standard glass-glass module configurations appear to provide the same or higher residual strength performance as laminated safety glass, if the interlayer material is approved for use in laminated safety glass. C. HemmerleChallenging Glass ConferencearticlePhotovoltaicsbending strengthresidual strengthfour point bendingapprovallaminated safety glassClay industries. Ceramics. GlassTP785-869ENChallenging Glass Conference Proceedings, Vol 5 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Photovoltaics bending strength residual strength four point bending approval laminated safety glass Clay industries. Ceramics. Glass TP785-869
spellingShingle	Photovoltaics bending strength residual strength four point bending approval laminated safety glass Clay industries. Ceramics. Glass TP785-869 C. Hemmerle Structural Safety of Photovoltaic Modules in the Building Envelope
description	The mechanical performance of photovoltaic modules has not been adequately characterized for use as glazing product in the building envelope. As a result, the modules are subject to individual approval by the building authorities in many building-integrated applications. This paper presents experimental research on glass based photovoltaic modules, analyzing their mechanical properties in comparison with regulated construction products. The focus is on the influence of photovoltaic thin-film coatings on the bending strength of the float glass used as a substrate or superstrate and on the post-breakage behavior of glass-glass modules. The four-point bending test according to EN 1288-3 was modified in terms of specimen dimensions in order to test full-size photovoltaic glass panes. The modified set-up was verified as a suitable and simple test method to determine and confirm strength values. Edge ablation was found to reduce glass strength rather than the PV coating and cell scribing processes, but the reduction is less than 10 % and the minimum strength value of float glass can still be met. Residual strength testing of glass-glass photovoltaic modules in different load and temperature scenarios showed that the integration of crystalline silicon cells as well as thin-film solar cells improves the post-breakage behavior of glazings. A critical point may be mechanical failure within the layers of thin-film cells on glass associated with the potential danger of broken glass pieces falling down. Standard glass-glass module configurations appear to provide the same or higher residual strength performance as laminated safety glass, if the interlayer material is approved for use in laminated safety glass.
format	article
author	C. Hemmerle
author_facet	C. Hemmerle
author_sort	C. Hemmerle
title	Structural Safety of Photovoltaic Modules in the Building Envelope
title_short	Structural Safety of Photovoltaic Modules in the Building Envelope
title_full	Structural Safety of Photovoltaic Modules in the Building Envelope
title_fullStr	Structural Safety of Photovoltaic Modules in the Building Envelope
title_full_unstemmed	Structural Safety of Photovoltaic Modules in the Building Envelope
title_sort	structural safety of photovoltaic modules in the building envelope
publisher	Challenging Glass Conference
publishDate	2016
url	https://doaj.org/article/e0ec3e87eeec449090258ada6b0ee333
work_keys_str_mv	AT chemmerle structuralsafetyofphotovoltaicmodulesinthebuildingenvelope
_version_	1718372883638517760

Structural Safety of Photovoltaic Modules in the Building Envelope

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