The 'PV Rooftop Garden': Providing Recreational Green Roofs and Renewable Energy as a Multifunctional System within One Surface Area

Autor: Doris Österreicher, Stefan Sattler, Irene Zluwa
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Architectural engineering
rooftop gardens
0211 other engineering and technologies
Microclimate
02 engineering and technology
010501 environmental sciences
01 natural sciences
lcsh:Technology
urban microclimate
lcsh:Chemistry
green roofs
Photovoltaics
Retrofitting
General Materials Science
building-integrated photovoltaic (bipvs)
021108 energy
Urban heat island
rooftop planting design
Instrumentation
Recreation
lcsh:QH301-705.5
0105 earth and related environmental sciences
Fluid Flow and Transfer Processes
business.industry
lcsh:T
Process Chemistry and Technology
Photovoltaic system
General Engineering
solar shading with pvs
Vegetation
building refurbishment
lcsh:QC1-999
Computer Science Applications
Renewable energy
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
Environmental science
business
lcsh:Engineering (General). Civil engineering (General)
lcsh:Physics
Zdroj: Applied Sciences, Vol 10, Iss 5, p 1791 (2020)
Applied Sciences
Volume 10
Issue 5
ISSN: 2076-3417
Popis: In urban areas, summer temperatures are continuously increasing, and cities are aiming at implementing measures to mitigate the urban heat island (UHI) effect. Reducing sealed surfaces and adding plants have been shown to be beneficial for urban microclimates. Green roofs are thus a viable alternative to standard roofs made out of materials that completely seal the top layer. However, roofs are, at the same time, also ideal for the integration of photovoltaics (PVs), as they are mostly unshaded. With both applications competing for the same surface area, solutions must be found that symbiotically combine the benefits of vegetation and renewable energy. Using an interdisciplinary study, various designs were developed for prototypical applications to integrate PV systems into rooftop gardens, with a specific focus on retrofitting flat roofs. The prototypes were analyzed and tested based on structural design aspects, suitable plant choices, and energy output. The results showed that the concurrent integration of PVs and green roofs into the same surface area can be achieved with lightweight construction, which is particularly suitable for existing buildings. The system can contribute to much-needed urban renewable energy generation, the mitigation of the UHI effect, and the provision of recreational spaces.
Databáze: OpenAIRE
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