Expanding knowledge base for photovoltaic systems’ integration by contributing to the development of an experimental testing method for evaluation of their performance as climate screens
Doctoral thesis
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https://hdl.handle.net/11250/3104983Utgivelsesdato
2023Metadata
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Sammendrag
Building-integrated photovoltaic (BIPV) is a vital element of zero energy or zero emission buildings (ZEB). BIPV systems are integrated into the building envelope and generate electricity on-site during the expected service lifetime of a system of around 25-30 years. The primary function of a BIPV system is seen as electricity production. Hence, factors that affect it are usually in focus when systems are evaluated and monitored after installation. While its function as a building envelope component is usually not appropriately evaluated, neither before nor after installation. One of the main functions of building envelope components is weather protection of inner building structures. A significant impact of precipitation on the building envelope is represented by WDR (wind-driven rain), a simultaneous occurrence of wind and rain.
Most wind-driven rain testing is done for façade systems, wall-windows, and wall-doors, while much less is published on WDR testing for roof systems. Furthermore, BIPV systems are barely studied as climate screens. Watertightness of BIPV systems can be evaluated using WDR exposure testing. Water leakages that occur during testing should be quantified to provide valuable information in addition to the usual qualitative data. This thesis contributes to the research on WDR testing by investigating selected BIPV systems for roof integration with means of quantitative measurements.
This thesis presents results from experimental testing of a water collection system for quantification of WDR intrusion and provides extensive information on the design and application of BIPV systems designed for roof integration. As a result, a framework is presented, which includes a step-by-step test methodology and a detailed description of the construction of the water collection system. This methodology was applied to three BIPV systems designed for roof integration: solar shingles system integrated along metal roof plates, solar roof tiles integrated along dummy roof tiles produced by the same manufacturer, and large glass-glass solar modules integrated along steel roof plates. The watertightness level was determined for all the tested systems. The systems can be ranked according to their watertightness level, i.e., the maximum level of air pressure applied simultaneously with water spray and runoff water when no water leakages occur on the tested system’s inner side.
Består av
Paper 1: Fedorova, Anna; Jelle, Bjørn Petter. Building Integration of Photovoltaics at Nordic Climate Conditions. I: Advanced Building Skins - Proceedings of 12th Conference on Advanced Building Skins. Advanced Building Skins. ABS 2017 ISBN 978-3-9524883-1-7. s. 1216-1225. Copyright© 2017 Advanced Building Skins. ABS.Paper 2: Fedorova, Anna; Hrynyszyn, Bozena Dorota; Jelle, Bjørn Petter. Building-Integrated Photovoltaics from Products to System Integration - A Critical Review. IOP Conference Series: Materials Science and Engineering 2020 ;Volum 960. s. 1-13. Open access under the terms of the Creative Commons Attribution 3.0 licence (CC-BY). Available at: http://dx.doi.org/10.1088/1757-899X/960/4/042054
Paper 3: Fedorova, Anna; Jelle, Bjørn Petter; Hrynyszyn, Bozena Dorota; Geving, Stig. A Testing Methodology for Quantification of Wind-Driven Rain Intrusion for Building-Integrated Photovoltaic Systems. Building and Environment 2021 ;Volum 199. s. 1-12. This is an open access article under the CC-BY license. Available at: http://dx.doi.org/10.1016/j.buildenv.2021.107917
Paper 4: Fedorova, Anna; Jelle, Bjørn Petter; Hrynyszyn, Bozena Dorota; Geving, Stig. Quantification of wind-driven rain intrusion in building-integrated photovoltaic systems. Solar Energy 2021 ;Volum 230. s. 376-389. This is an open access article under the CC-BY license. Available at: http://dx.doi.org/10.1016/j.solener.2021.10.030