Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.

Educational buildings in Europe account for around 20% of the entire non-residential floor space where good indoor comfort and air quality are essential for correct educational development. Directive 2010/31/UE upholds that the public administration should promote the transformation of its buildings...

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Autores: Irulegi Garmendia, María Olatz, Ruiz Pardo, Álvaro, Serra, Antonio, Salmerón, J.M., Vega, Ruth
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/68866
Acceso en línea:http://hdl.handle.net/10810/68866
Access Level:acceso abierto
Palabra clave:educational buildings
retrofit
Net Zero Energy Buildings
energy saving strategies
ventilative cooling
heat recovery ventilation
reduction of the heating period
user comfort analysis
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spelling Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.Irulegi Garmendia, María OlatzRuiz Pardo, ÁlvaroSerra, AntonioSalmerón, J.M.Vega, Rutheducational buildingsretrofitNet Zero Energy Buildingsenergy saving strategiesventilative coolingheat recovery ventilationreduction of the heating perioduser comfort analysisEducational buildings in Europe account for around 20% of the entire non-residential floor space where good indoor comfort and air quality are essential for correct educational development. Directive 2010/31/UE upholds that the public administration should promote the transformation of its buildings towards Net Zero Energy Buildings. In Spain, it is particularly important to act on the existing building stock since the construction of new buildings has been considerably reduced as a result of the bursting of the property bubble following the frenzied building activity over the last few decades. This paper proposes a method that starts by studying user comfort under real conditions through a questionnaire and monitoring campaign. This analysis revealed that students prefer lower indoor temperatures (20-22-5ºC) than stated by theoretical comfort models. The need for lower temperatures combined with high internal gains mainly due to computers and lighting, constitute the first strategy to reduce the heating needs. The principal measures that make it possible to achieve comfort conditions work together with energy saving strategies, which can be achieved through effective interventions in the buildings: eliminating thermal bridges, using air-to-air heat recovery systems and improving the windows in the north façade of the building. The results show a potential energy saving of up to 62%. Furthermore, overheating problems reported by users in summer and shoulder seasons could be solved by using day and night time natural ventilation, avoiding the installation of air-conditioning systems and all the associated environmental impacts. Finally, acting on the existing building stock implies necessarily understanding user needs in order to define most adequate energy saving strategies.Elsevier202420242017info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/68866reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.sciencedirect.com/science/article/pii/S0378778817308605info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/© 2017 Elsevier under CC BY-NC-ND licenseoai:addi.ehu.eus:10810/688662026-06-18T09:23:17Z
dc.title.none.fl_str_mv Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
title Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
spellingShingle Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
Irulegi Garmendia, María Olatz
educational buildings
retrofit
Net Zero Energy Buildings
energy saving strategies
ventilative cooling
heat recovery ventilation
reduction of the heating period
user comfort analysis
title_short Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
title_full Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
title_fullStr Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
title_full_unstemmed Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
title_sort Retrofit strategies towards Net Zero Energy Educational Buildings: a case study at the University of the Basque Country.
dc.creator.none.fl_str_mv Irulegi Garmendia, María Olatz
Ruiz Pardo, Álvaro
Serra, Antonio
Salmerón, J.M.
Vega, Ruth
author Irulegi Garmendia, María Olatz
author_facet Irulegi Garmendia, María Olatz
Ruiz Pardo, Álvaro
Serra, Antonio
Salmerón, J.M.
Vega, Ruth
author_role author
author2 Ruiz Pardo, Álvaro
Serra, Antonio
Salmerón, J.M.
Vega, Ruth
author2_role author
author
author
author
dc.subject.none.fl_str_mv educational buildings
retrofit
Net Zero Energy Buildings
energy saving strategies
ventilative cooling
heat recovery ventilation
reduction of the heating period
user comfort analysis
topic educational buildings
retrofit
Net Zero Energy Buildings
energy saving strategies
ventilative cooling
heat recovery ventilation
reduction of the heating period
user comfort analysis
description Educational buildings in Europe account for around 20% of the entire non-residential floor space where good indoor comfort and air quality are essential for correct educational development. Directive 2010/31/UE upholds that the public administration should promote the transformation of its buildings towards Net Zero Energy Buildings. In Spain, it is particularly important to act on the existing building stock since the construction of new buildings has been considerably reduced as a result of the bursting of the property bubble following the frenzied building activity over the last few decades. This paper proposes a method that starts by studying user comfort under real conditions through a questionnaire and monitoring campaign. This analysis revealed that students prefer lower indoor temperatures (20-22-5ºC) than stated by theoretical comfort models. The need for lower temperatures combined with high internal gains mainly due to computers and lighting, constitute the first strategy to reduce the heating needs. The principal measures that make it possible to achieve comfort conditions work together with energy saving strategies, which can be achieved through effective interventions in the buildings: eliminating thermal bridges, using air-to-air heat recovery systems and improving the windows in the north façade of the building. The results show a potential energy saving of up to 62%. Furthermore, overheating problems reported by users in summer and shoulder seasons could be solved by using day and night time natural ventilation, avoiding the installation of air-conditioning systems and all the associated environmental impacts. Finally, acting on the existing building stock implies necessarily understanding user needs in order to define most adequate energy saving strategies.
publishDate 2017
dc.date.none.fl_str_mv 2017
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/68866
url http://hdl.handle.net/10810/68866
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/S0378778817308605
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2017 Elsevier under CC BY-NC-ND license
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2017 Elsevier under CC BY-NC-ND license
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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