Photovoltaic systems with vertically mounted bifacial PV modules in combination with green roofs

Baumann, Thomas; Nussbaumer, Hartmut; Klenk, M.; Dreisiebner, Andreas; Carigiet, Fabian; Baumgartner, Franz

doi:10.1016/j.solener.2019.08.014

Cited by 71 publications

(35 citation statements)

References 8 publications

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“…In connection with the development and diffusion of RES technologies [63], photovoltaic (PV) sources seem to be particularly predestined to meet the increased demand for energy during the daytime hours by residential consumers. It is possible to develop prosumer PV installations on the roofs and facades of multi-family buildings (e.g., [64][65][66][67], including green roofs [68]). A techno-economic model for PV household-prosumers may include state of charge management strategies in dedicated energy storage systems, e.g., [69].…”

Section: Next Step: Smart Prosumermentioning

confidence: 99%

Impact of the Lockdown during the COVID-19 Pandemic on Electricity Use by Residential Users

et al. 2021

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The COVID-19 pandemic and the associated lockdown can be regarded as a forced social experiment, the results of which show how to use energy under specific conditions. During this period, there was a reduction in electricity consumption at the level of the power system, but a different specificity distinguishes the group of household users. The article aims at presenting and analysing the identified issues concerning residential electricity users based on the experience from the COVID-19 pandemic lockdown. Data from energy meters from almost 7000 flats in Warsaw’s housing estates during the lockdown in 2020 and the analogous period before the pandemic were used. The analysis showed that, on average, residential users staying practically the whole day in their flats increased their energy consumption, but without increasing their average daily peak power, smoothing the profile in the morning hours to the level reaching the peak power that had occurred in the analogous period before the lockdown. The peak power of the sections feeding the different numbers of dwellings also remained practically unchanged during the lockdown compared to the pre-pandemic period. The pressure to work and educate remotely should contribute to an increase in the digital competence of society, which may result in an increased interest in new forms of activity and cooperation based on demand-side response and prosumption mechanisms, with digital settlements for energy exchange and services.

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Section: Next Step: Smart Prosumermentioning

confidence: 99%

Impact of the Lockdown during the COVID-19 Pandemic on Electricity Use by Residential Users

et al. 2021

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“…Bifacial PV modules have been analyzed in various installations and environmental conditions. Some studies have analyzed the output performance based on reflective materials such as white clothes, vegetables, and gravel [2,3]. There are also increasing applications of the bifacial PV module in a vertical form by integrating them into structures such as noise barriers and fences [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Practical Performance Analysis of a Bifacial PV Module and System

Ju-Hee

Lee

2020

Energies

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Bifacial photovoltaic (PV) modules can take advantage of rear-surface irradiance, enabling them to produce more energy compared with monofacial PV modules. However, the performance of bifacial PV modules depends on the irradiance at the rear side, which is strongly affected by the installation setup and environmental conditions. In this study, we experiment with a bifacial PV module and a bifacial PV system by varying the size of the reflective material, vertical installation, temperature mismatch, and concentration of particulate matter (PM), using three testbeds. From our analyses, we found that the specific yield increased by 1.6% when the reflective material size doubled. When the PV module was installed vertically, the reduction of power due to the shadow effect occurred, and thus the maximum current was 14.3% lower than the short-circuit current. We also observed a maximum average surface temperature mismatch of 2.19 °C depending on the position of the modules when they were composed in a row. Finally, in clear sky conditions, when the concentration of PM 10 changed by 100 µg/m3, the bifacial gain increased by 4%. In overcast conditions, when the concentration of PM 10 changed by 100 µg/m3, the bifacial gain decreased by 0.9%.

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“…In consideration of the limed urban roof area, both technologies (BG and PV energy production) are often viewed as competitors [6], a combination of both technologies (BG and PV energy production) appears to be important when striving for a holistic design of contemporary buildings [33].…”

Section: Combination Of Building Greenery and Photovoltaic Energy Productionmentioning

confidence: 99%

“…With the goal to design solutions with a combined use of these technologies for building exteriors, different projects have been developed in which various combinations of photovoltaic (PV) panels and BG systems were investigated. Despite there being many advantages found when studying a combination of BG systems and PV energy production as reported in various publications (see Section 3.3), the problem of shade on the PV panels caused by plants and more difficult maintenance of the green roof is hardly addressed in publications [6,7].…”

Section: Introductionmentioning

confidence: 99%

The Combination of Building Greenery and Photovoltaic Energy Production—A Discussion of Challenges and Opportunities in Design

Zluwa

Pitha

2021

Sustainability

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In the case of building surfaces, the installation of green roofs or green facades can be used to reduce the temperature of the environment and the building. In addition, introducing photovoltaic energy production will help to reduce CO2 emissions. Both approaches (building greenery and photovoltaic energy production) compete, as both of them are located on the exterior of buildings. This paper aims to give an overview of solutions for the combination of building greenery (BG) systems and photovoltaic (PV) panels. Planning principles for different applications are outlined in a guideline for planning a sustainable surface on contemporary buildings. A comprehensive literature review was done. Identified solutions of combinations were systematically analysed and discussed in comparison with additional relevant literature. The main findings of this paper were: (A) BG and PV systems with low sub-construction heights require shallow substrates/low growing plants, whereas in the case of the combination of (a semi)-intensive GR system, a distance of a minimum 60 cm between the substrate surface and lower panel edge is recommended; (B) The cooling effect of the greenery depends on the distance between the PV and the air velocity; (C) if the substrate is dry, there is no evapotranspiration and therefore no cooling effect; (D) A spectrum of different PV systems, sub-constructions, and plants for the combination of BG and PV is necessary and suitable for different applications shown within the publication.

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Photovoltaic systems with vertically mounted bifacial PV modules in combination with green roofs

Cited by 71 publications

References 8 publications

Impact of the Lockdown during the COVID-19 Pandemic on Electricity Use by Residential Users

Impact of the Lockdown during the COVID-19 Pandemic on Electricity Use by Residential Users

Practical Performance Analysis of a Bifacial PV Module and System

The Combination of Building Greenery and Photovoltaic Energy Production—A Discussion of Challenges and Opportunities in Design

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