Improvementt of the water resistancy in the integration of photovoltaic panels on traditional roofs

Fasana, Sara; Nelva, Riccardo

doi:10.1016/j.conbuildmat.2013.07.055

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…For rain tightness testing of BIPV products see the studies by e.g., Breivik et al [18] and Fasana and Nelva [19]. Life cycle assessment (LCA) of PV systems [20] will also become more important.…”

Section: Test Methods and Standardsmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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Abstract:Building integrated photovoltaics (BIPV) offer an aesthetical, economical and technical solution to integrate solar cells harvesting solar radiation to produce electricity within the climate envelopes of buildings. Photovoltaic (PV) cells may be mounted above or onto the existing or traditional roofing or wall systems. However, BIPV systems replace the outer building envelope skin, i.e., the climate screen, hence serving simultanously as both a climate screen and a power source generating electricity. Thus, BIPV may provide savings in materials and labor, in addition to reducing the electricity costs. Hence, for the BIPV products, in addition to specific requirements put on the solar cell technology, it is of major importance to have satisfactory or strict requirements of rain tightness and durability, where building physical issues like e.g., heat and moisture transport in the building envelope also have to be considered and accounted for. This work, from both a technological and scientific point of view, summarizes briefly the current state-of-the-art of BIPV, including both BIPV foil, tiles, modules and solar cell glazing products, and addresses possible research pathways for BIPV in the years to come.

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Section: Test Methods and Standardsmentioning

confidence: 99%

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Jelle

2015

Energies

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“…This phenomenon causes water penetration and leads to technical problems in BIPV systems, including condensation created by humidity, which can lead to failure of the BIPV system's overall function, as well as damage to interior building components [71,72]. The implementation of a continuous and seamless underlayer sheet on the top of the roof structure and below the system during construction might be a solution to this issue when it comes to the roof-mounted BIPV systems [83].…”

Section: Water Penetrationmentioning

confidence: 99%

The Contribution of Building-Integrated Photovoltaics (BIPV) to the Concept of Nearly Zero-Energy Cities in Europe: Potential and Challenges Ahead

2021

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The main purpose of this paper is to investigate the contributions of building-integrated photovoltaic (BIPV) systems to the notion of nearly zero-energy cities in the capitals of the European Union member states (EU), Norway, and Switzerland. Moreover, an in-depth investigation of the barriers and challenges ahead of the widespread rollout of BIPV technology is undertaken. This study investigates the scalability of the nearly zero-energy concept using BIPV technology in moving from individual buildings to entire cities. This study provide a metric for architects and urban planners that can be used to assess how much of the energy consumed by buildings in Europe could be supplied by BIPV systems when installed as building envelope materials on the outer skins of buildings. The results illustrate that by 2030, when buildings in the EU become more energy-efficient and the efficiency of BIPV systems will have improved considerably, BIPV envelope materials will be a reasonable option for building skins and will help in achieving nearly zero-energy cities. This study reveals that in the EU, taking a building skin to building net surface area ratio of 0.78 and a building skin glazing ratio of 30%, buildings could cover their electricity consumption using BIPV systems by 2030. Eighteen challenges and barriers to the extensive rollout of BIPV systems are recognised, classified, and discussed in this study in detail. The challenges are categorised into five stages, namely the decision, design, implementation, operation and maintenance, and end of life challenges.

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“…Fasana and Nelva [8] carried out a WDR test in a wind tunnel on stone roofs made of gneiss slates, to qualitatively assess the elements' watertightness. Fasana and Nelva [9] carried out WDR experimental tests to study the integration of photovoltaic panels on a roof with clay and concrete tiles, and they qualitatively assessed the water resistance of the critical area of the fitting system. Breivik et al [10] performed WDR tests on two BIPV modules integrated in the roof, to visually investigate their rain tightness and to examine how they would withstand water intrusion at large-scale conditions.…”

Section: Introductionmentioning

confidence: 99%

Wind-driven rain tightness of building-integrated photovoltaics panels

Moschetti,

Gullbrekken,

Asphaug

2023

J. Phys.: Conf. Ser.

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The exposure to wind-driven rain (WDR) is a key factor impacting the performance and the durability of the building envelope. Building-integrated photovoltaic (BIPV) panels are increasingly used as roofing and façade materials, but little information is available on their weather protection performance. Although WDR exposure has been qualitatively investigated in laboratories, only few studies have directly quantified the water intrusion through BIPV. This article presents the results from a WDR laboratory test of a BIPV product, where water intrusion was both qualitatively and quantitatively investigated. Furthermore, as roof integration is the primary function of the studied BIPV panels, the results from the same test performed on another traditional roofing material, i.e., concrete tiles, are described and discussed. The test results showed that the BIPV panels performed better as façade cladding than as roofing material, since no quantifiable water leakages were detected at 90° inclination. At 15° and 30° inclinations, the total water leakages through the BIPV system were around 90% lower than those of the concrete tile roofing. This article’s findings demonstrate that the quantification of water intrusion through BIPV panels is feasible and can provide significant information for further developing and improving the design of BIPV systems as climate screens.

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Improvementt of the water resistancy in the integration of photovoltaic panels on traditional roofs

Cited by 10 publications

References 8 publications

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

Building Integrated Photovoltaics: A Concise Description of the Current State of the Art and Possible Research Pathways

The Contribution of Building-Integrated Photovoltaics (BIPV) to the Concept of Nearly Zero-Energy Cities in Europe: Potential and Challenges Ahead

Wind-driven rain tightness of building-integrated photovoltaics panels

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