Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions

In recent years, there has been growing concern regarding energy efficiency in the building sector with energy requirements increasing worldwide and now responsible for about 40% of final energy consumption in Europe. Previous research has shown that ventilated façades help to reduce energy use when...

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Autores: Domínguez Torres, Carlos Antonio, León-Rodríguez, Ángel Luis, Suárez, Rafael, Domínguez Delgado, Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/135917
Acceso en línea:https://hdl.handle.net/11441/135917
https://doi.org/10.3390/math10010163
Access Level:acceso abierto
Palabra clave:Optimization
Cool roof
Thermal insulation
Aging effect
Social housing
Life cycle cost analysis
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spelling Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditionsDomínguez Torres, Carlos AntonioLeón-Rodríguez, Ángel LuisSuárez, RafaelDomínguez Delgado, AntonioOptimizationCool roofThermal insulationAging effectSocial housingLife cycle cost analysisIn recent years, there has been growing concern regarding energy efficiency in the building sector with energy requirements increasing worldwide and now responsible for about 40% of final energy consumption in Europe. Previous research has shown that ventilated façades help to reduce energy use when cooling buildings in hot and temperate climates. Of the different ventilated façade configurations reported in the literature, the configuration of ventilated façade with window rarely has been studied, and its 3D thermodynamic behavior is deserving of further analysis and modeling. This paper examines the thermal behavior of an opaque ventilated façade with a window, in experimentally and numerical terms and its impact in energy savings to get indoor comfort. Field measurements were conducted during the winter, spring and summer seasons of 2021 using outdoor full scale test cells located in Seville (southern Spain). The modeling of the ventilated façade was carried out using a three-dimensional approach taking into account the 3D behavior of the air flow in the air cavity due to the presence of the window. The validation and comparison process using experimental data showed that the proposed model provided good results from quantitative and qualitative point of view. The reduction of the heat flux was assessed by comparing the energy performance of a ventilated façade with that of an unventilated façade. Both experimental and numerical results showed that the ventilated façade provided a reduction in annual total energy consumption when compared to the unventilated façade, being compensated the winter energy penalization by the summer energy savings. This reduction is about 21% for the whole typical climatic year showing the ability of the opaque ventilated façade studied to reduce energy consumption to insure indoor comfort, making its suitable for use in retrofitting the energy-obsolete building stock built in Spain in the middle decades of the 20 century.MDPIEstructuras de Edificación e Ingeniería del Terreno2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/135917https://doi.org/10.3390/math10010163reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésMathematics, 10 (1), 1-42.https://doi.org/10.3390/math10010163info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1359172026-06-17T12:51:07Z
dc.title.none.fl_str_mv Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
title Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
spellingShingle Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
Domínguez Torres, Carlos Antonio
Optimization
Cool roof
Thermal insulation
Aging effect
Social housing
Life cycle cost analysis
title_short Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
title_full Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
title_fullStr Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
title_full_unstemmed Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
title_sort Empirical and numerical analysis of an opaque ventilated facade with windows openings under Mediterranean climate conditions
dc.creator.none.fl_str_mv Domínguez Torres, Carlos Antonio
León-Rodríguez, Ángel Luis
Suárez, Rafael
Domínguez Delgado, Antonio
author Domínguez Torres, Carlos Antonio
author_facet Domínguez Torres, Carlos Antonio
León-Rodríguez, Ángel Luis
Suárez, Rafael
Domínguez Delgado, Antonio
author_role author
author2 León-Rodríguez, Ángel Luis
Suárez, Rafael
Domínguez Delgado, Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Estructuras de Edificación e Ingeniería del Terreno
dc.subject.none.fl_str_mv Optimization
Cool roof
Thermal insulation
Aging effect
Social housing
Life cycle cost analysis
topic Optimization
Cool roof
Thermal insulation
Aging effect
Social housing
Life cycle cost analysis
description In recent years, there has been growing concern regarding energy efficiency in the building sector with energy requirements increasing worldwide and now responsible for about 40% of final energy consumption in Europe. Previous research has shown that ventilated façades help to reduce energy use when cooling buildings in hot and temperate climates. Of the different ventilated façade configurations reported in the literature, the configuration of ventilated façade with window rarely has been studied, and its 3D thermodynamic behavior is deserving of further analysis and modeling. This paper examines the thermal behavior of an opaque ventilated façade with a window, in experimentally and numerical terms and its impact in energy savings to get indoor comfort. Field measurements were conducted during the winter, spring and summer seasons of 2021 using outdoor full scale test cells located in Seville (southern Spain). The modeling of the ventilated façade was carried out using a three-dimensional approach taking into account the 3D behavior of the air flow in the air cavity due to the presence of the window. The validation and comparison process using experimental data showed that the proposed model provided good results from quantitative and qualitative point of view. The reduction of the heat flux was assessed by comparing the energy performance of a ventilated façade with that of an unventilated façade. Both experimental and numerical results showed that the ventilated façade provided a reduction in annual total energy consumption when compared to the unventilated façade, being compensated the winter energy penalization by the summer energy savings. This reduction is about 21% for the whole typical climatic year showing the ability of the opaque ventilated façade studied to reduce energy consumption to insure indoor comfort, making its suitable for use in retrofitting the energy-obsolete building stock built in Spain in the middle decades of the 20 century.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/135917
https://doi.org/10.3390/math10010163
url https://hdl.handle.net/11441/135917
https://doi.org/10.3390/math10010163
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Mathematics, 10 (1), 1-42.
https://doi.org/10.3390/math10010163
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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