Shading by Overhang PV Collectors

Appelbaum, J.; Aronescu, Avi; Maor, T.

doi:10.3390/app9204280

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…The annual incident energy (global energy, diffuse, and beam) on overhangs made up of conventional and bifacial PV modules is computed by Appelbaum et al (2019) together with the fluctuation in shadows produced by overhangs on doors, windows, and carports. The portion of the bifacial PV module's backside receives reflected energy (5% or more) from the ground and walls.…”

Section: Bifacial Pv-based Integrated Buildingsmentioning

confidence: 99%

Current prospects of building-integrated solar PV systems and the application of bifacial PVs

Abojela¹,

Desa²,

Sabry

2023

Front. Energy Res.

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Building-integrated solar photovoltaic (BIPV) systems have gained attention in current years as a way to recover the building’s thermal comfort and generate sustainable energy in building structures. BIPV systems can provide shade against sunshine while generating ancillary electrical power. Over the last decades, engineers have been trying to improve the efficiency of BIPV systems. BIPV systems with various installation types, including rooftop, balcony, curtain, sunshade, and wall façade types, are being constantly researched and intensively presented for improving power efficiency and reducing air-conditioning use. This work provides an overview of solar BIPV systems and focuses particularly on existing applications of the bifacial type of BIPV systems. The motivation and an overview of BIPV systems are first introduced, followed by the study methodology considered and the contributions. This work discusses PV technologies of bifacial PVs (monocrystalline and polycrystalline bifacial modules), BIPV installation [curtains, rooftop, flat rooftop, transparent faced, balcony windows (transparent), wall opaque facade, flat roof-faced, and skylight sunshade types], simulation and optimization software (simulation software and future trends), zero-energy BIPV technology, and optimization techniques of BIPV systems. Last, suggestion amendments to the current BIPV design that possibly contribute to growing the system’s effectiveness, reliability, and cost as future design theories for the whole system are presented.

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Section: Bifacial Pv-based Integrated Buildingsmentioning

confidence: 99%

Current prospects of building-integrated solar PV systems and the application of bifacial PVs

Abojela¹,

Desa²,

Sabry

2023

Front. Energy Res.

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“…This study proposes an L-shaped BIPV, which recycles the inherent reflectance of the PV panel surface to improve the power generation efficiency due to the installation angle. Solar PVs are generally installed on the front of a window's upper part and protrude as external sunshades [6]. On the other hand, the new concept, the L-shaped solar PV installed on the upper part of a window, is referred to as a bidirectional reflectance photovoltaic (BRPV).…”

Section: Research Purposementioning

confidence: 99%

Analysis of Energy Reduction and Energy Self-Sufficiency Improvement Effects by Applying a Bidirectional Reflectance PV Array with Integrated External Shading at a School Building

Lee,

Song

2023

Buildings

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In South Korea, the introduction of new and renewable energy in the building sector has been promoted through various policies since the early 2000s. As a result, solar photovoltaics (PV), which are mostly applied to the rooftops of buildings, and building-integrated photovoltaics (BIPV), which are installed on the elevated surfaces of buildings, have been applied to various sites with subsidies. Renewable energy will be mandatory for all buildings from 2025. In general, the power generation efficiency of PV panels varies depending on the installation angle. According to Korean standards, the power generation efficiency is 100% for an installation on a 30° slope, 90% for a horizontal installation, and 70% for a vertical installation. This study proposes a BIPV that improves the power generation efficiency using the unique reflectance of PV panel surfaces made of glass and a bidirectional reflectance PV array. This new type of BIPV structure improves the power generation efficiency and reduces the solar heat gain coefficient (SHGC) as it protrudes over the windows, providing external shading. It is defined as bidirectional reflectance PV (BRPV), and its performance is evaluated. The effects of applying BRPVs (48 KW by 160 PV Panels with 300 W) to a school building with a fixed slope PV on the rooftop were calculated based on annual measurement results, and it was found that the energy independence rate of the building increased from 34.1 to 65.8%.

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Vertical free-swinging photovoltaic racking energy modeling: A novel approach to agrivoltaics

Hayibo,

Pearce

2023

Renewable Energy

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Shading by Overhang PV Collectors

Cited by 4 publications

References 19 publications

Current prospects of building-integrated solar PV systems and the application of bifacial PVs

Current prospects of building-integrated solar PV systems and the application of bifacial PVs

Analysis of Energy Reduction and Energy Self-Sufficiency Improvement Effects by Applying a Bidirectional Reflectance PV Array with Integrated External Shading at a School Building

Vertical free-swinging photovoltaic racking energy modeling: A novel approach to agrivoltaics

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