Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating
In the quest for high albedo materials that boost the energy production of bifacial photovoltaic systems, a range of material already exists for reducing building roof surface temperatures, called cool roof materials. However, there is a noticeable absence of scientific literature addressing the com...
| Autores: | , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universidad del País Vasco |
| Repositorio: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/63659 |
| Acesso em linha: | http://hdl.handle.net/10810/63659 |
| Access Level: | acceso abierto |
| Palavra-chave: | bifacial PV cool roof BAPV building energy performance photovoltaic |
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Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coatingValencia Caballero, DanielBouchakour, SalimLuna Alloza, ÁlvaroGarcía Marco, BorjaHuidobro, AnaFlores Abascal, IvánSanz Martínez, AsierRomán, Eduardobifacial PVcool roofBAPVbuilding energy performancephotovoltaicIn the quest for high albedo materials that boost the energy production of bifacial photovoltaic systems, a range of material already exists for reducing building roof surface temperatures, called cool roof materials. However, there is a noticeable absence of scientific literature addressing the combination of cool roofs and bifacial photovoltaic systems. This study investigates the photovoltaic performance of a bifacial photovoltaic system with cool roof coating on the underside and its impact on floor temperature. For this purpose, four ∼1kWp prototypes were installed on the terrace of the GAIA building of the UPC near Barcelona, Spain: (1) bifacial panels above a cool roof, (2) bifacial panels above normal floor, (3) bifacial panels above a normal floor with n-type solar cells encapsulated in TPO, and (4) monofacial panels. The results reveal 8.6 % higher PV yield for bifacial with cool roof compared to monofacial, and 4–4.5 % higher for bifacial (normal floor) compared to monofacial. Additionally, the cool roof coating contributes to reducing the floor temperatures, particularly in the unshaded (exposed) areas during summer (−3.8 °C). The presence of photovoltaic panels has also demonstrated a positive impact on floor temperatures during both winter and summer. Thus, the cool roof coating offers two benefits: increased photovoltaic yield and reduced building cooling requirements, both of which are associated with economic advantages. The cool roof coating can be integrated into existing or new bifacial roof systems.This work was supported by the SUDOKET SOE2/P1/E0677 project funded by FEDER of the EU under the Interreg-Sudoe program.Elsevier202320232023info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/63659reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.sciencedirect.com/science/article/pii/S2352710223021897info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/© 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Atribución 3.0 Españaoai:addi.ehu.eus:10810/636592026-06-18T09:23:17Z |
| dc.title.none.fl_str_mv |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| title |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| spellingShingle |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating Valencia Caballero, Daniel bifacial PV cool roof BAPV building energy performance photovoltaic |
| title_short |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| title_full |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| title_fullStr |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| title_full_unstemmed |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| title_sort |
Experimental energy performance assessment of a bifacial photovoltaic system and effect of cool roof coating |
| dc.creator.none.fl_str_mv |
Valencia Caballero, Daniel Bouchakour, Salim Luna Alloza, Álvaro García Marco, Borja Huidobro, Ana Flores Abascal, Iván Sanz Martínez, Asier Román, Eduardo |
| author |
Valencia Caballero, Daniel |
| author_facet |
Valencia Caballero, Daniel Bouchakour, Salim Luna Alloza, Álvaro García Marco, Borja Huidobro, Ana Flores Abascal, Iván Sanz Martínez, Asier Román, Eduardo |
| author_role |
author |
| author2 |
Bouchakour, Salim Luna Alloza, Álvaro García Marco, Borja Huidobro, Ana Flores Abascal, Iván Sanz Martínez, Asier Román, Eduardo |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
bifacial PV cool roof BAPV building energy performance photovoltaic |
| topic |
bifacial PV cool roof BAPV building energy performance photovoltaic |
| description |
In the quest for high albedo materials that boost the energy production of bifacial photovoltaic systems, a range of material already exists for reducing building roof surface temperatures, called cool roof materials. However, there is a noticeable absence of scientific literature addressing the combination of cool roofs and bifacial photovoltaic systems. This study investigates the photovoltaic performance of a bifacial photovoltaic system with cool roof coating on the underside and its impact on floor temperature. For this purpose, four ∼1kWp prototypes were installed on the terrace of the GAIA building of the UPC near Barcelona, Spain: (1) bifacial panels above a cool roof, (2) bifacial panels above normal floor, (3) bifacial panels above a normal floor with n-type solar cells encapsulated in TPO, and (4) monofacial panels. The results reveal 8.6 % higher PV yield for bifacial with cool roof compared to monofacial, and 4–4.5 % higher for bifacial (normal floor) compared to monofacial. Additionally, the cool roof coating contributes to reducing the floor temperatures, particularly in the unshaded (exposed) areas during summer (−3.8 °C). The presence of photovoltaic panels has also demonstrated a positive impact on floor temperatures during both winter and summer. Thus, the cool roof coating offers two benefits: increased photovoltaic yield and reduced building cooling requirements, both of which are associated with economic advantages. The cool roof coating can be integrated into existing or new bifacial roof systems. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 2023 2023 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10810/63659 |
| url |
http://hdl.handle.net/10810/63659 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
https://www.sciencedirect.com/science/article/pii/S2352710223021897 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/3.0/es/ Atribución 3.0 España |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://creativecommons.org/licenses/by/3.0/es/ Atribución 3.0 España |
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application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
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Elsevier |
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reponame:Addi. Archivo Digital para la Docencia y la Investigación instname:Universidad del País Vasco |
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Universidad del País Vasco |
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Addi. Archivo Digital para la Docencia y la Investigación |
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Addi. Archivo Digital para la Docencia y la Investigación |
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15,300724 |