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ZigZag Structure in Façade Optimizes PV Yield While Aesthetics Are Preserved
R.M.E. Valckenborg, W. van de Wall, W. Folkerts, J.L.M. Hensen, A. De Vries
PV System, Modelling / Modeling, Façade
PV Applications and Integration
Subtopic: PV in Buildings and the Environment
Event: 32nd European Photovoltaic Solar Energy Conference and Exhibition
Session: 6DO.7.5
2486 - 2491
ISBN: 3-936338-41-8
Paper DOI: 10.4229/EUPVSEC20162016-6DO.7.5
0,00 EUR
Document(s): paper, presentation


In the Netherlands, the possibilities for façade PV applications draw more attention lately due to a combination of government incentives, declining PV-module prices and upcoming legislation from the European NZEBdirective (2010/31/EU). In this context, start-up company Wallvision has introduced a ZigZag structured façade in which the PV-modules are hidden from ground level, and the decorative panels are customized to the aesthetical preferences of the architect. Understanding the PV-yield as a function of the geometry and other system components is crucial. For this purpose a customized geometrical model has been developed that can handle the varying solar path and the specular and diffuse reflection of the decorative panels. The experimental validation of the model is done with a newly built test façade (of 3 x 3 ZigZag cassettes, area ~ 20m2) in the SolarBEAT outdoor research facility of SEAC. Measurements include the irradiance at various points and kWh-yield per minute time interval. The aesthetic aspect of the ZigZag façade is as important as the PV-performance part of the product, and is therefore included in this paper.