Alternative encapsulation for double-glass PV modules

Dr. Bernhard Koll, Kuraray Europe GmbH, Division TROSIFOL

In building-integrated photovoltaic (BIPV) for static reasons only double-glass PV modules are used. Such elements have to fulfil other requirements as e.g. heat insulation, as shading unit, specific aesthetics and design, noise protection as well as safety and security functions. These requirements today are fulfilled best with laminated safety glass (LSG). LSG contains nearly by 100% the plastic interlayer Polyvinyl butyral (PVB). By using PVB film as encapsulating material for solar cells, all the above described functions including safety and security benefits can be included in solar modules. Double-glass modules with Ethylene Vinyl Acetate or poured resin as encapsulating material do not behave as a LSG due to lower safety and security performance. This means that PVB allows low weight PV modules with high performance and excellent functionality. Modules assembled with PVB fulfil all national and international safety standards and building regulations and codes.

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The Authors

Dr. Bernhard Koll Kuraray Europe GmbH 1990 Entering the company Huels Troisdorf AG, responsible for R&D TROSIFOL PVB film 1994 change company name to HT TROPLAST AG 2002 change position to technical marketing TROSIFOL PVB film 2004 new... Read more