Estimation of the surface thermal resistances and heat loss by conduction using thermography

Autores
Marino, Beatriz Maria; Muñoz, Natalia; Thomas, Luis Pablo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The thermal insulation of a construction is established by the resistances of the materials employed and the thermal surface resistances, which may vary significantly from one building to another because of its location and climatic conditions. The importance of the surface resistances has been underestimated probably due to its complex calculation and variability since they depend on the differences of temperature and humidity, wind, shape of the envelope, surrounding obstacles such as trees, and other buildings. In this work, infrared thermography is employed to obtain the internal and external surface temperatures of the façades of a representative construction as part of a methodology to quantify the heat loss by conduction through the building envelope. U-values that encompass the characteristics of the envelope components and the thermal surface resistances are used. It is found that the thermal resistances of the air boundary layers vary during the day and, in most cases, are much greater than the values currently suggested by local regulations, thus significantly reducing the effective thermal conductivity of the envelope with respect to the design value. The findings show how important it is to quantitatively determine the heat flux through the building envelope on site for an already existing construction and corroborate the value estimated in the design stage.
Fil: Marino, Beatriz Maria. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
Fil: Muñoz, Natalia. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
Fil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
Materia
Actual Use Conditions
Heat Loss
In-Situ Measurements
Infrared Thermography
Surface Thermal Resistance
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/58191
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Estimation of the surface thermal resistances and heat loss by conduction using thermographyMarino, Beatriz MariaMuñoz, NataliaThomas, Luis PabloActual Use ConditionsHeat LossIn-Situ MeasurementsInfrared ThermographySurface Thermal Resistancehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The thermal insulation of a construction is established by the resistances of the materials employed and the thermal surface resistances, which may vary significantly from one building to another because of its location and climatic conditions. The importance of the surface resistances has been underestimated probably due to its complex calculation and variability since they depend on the differences of temperature and humidity, wind, shape of the envelope, surrounding obstacles such as trees, and other buildings. In this work, infrared thermography is employed to obtain the internal and external surface temperatures of the façades of a representative construction as part of a methodology to quantify the heat loss by conduction through the building envelope. U-values that encompass the characteristics of the envelope components and the thermal surface resistances are used. It is found that the thermal resistances of the air boundary layers vary during the day and, in most cases, are much greater than the values currently suggested by local regulations, thus significantly reducing the effective thermal conductivity of the envelope with respect to the design value. The findings show how important it is to quantitatively determine the heat flux through the building envelope on site for an already existing construction and corroborate the value estimated in the design stage.Fil: Marino, Beatriz Maria. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; ArgentinaFil: Muñoz, Natalia. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; ArgentinaFil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; ArgentinaPergamon-Elsevier Science Ltd2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/58191Marino, Beatriz Maria; Muñoz, Natalia; Thomas, Luis Pablo; Estimation of the surface thermal resistances and heat loss by conduction using thermography; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 114; 3-2017; 1213-12211359-4311CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1359431116339552info:eu-repo/semantics/altIdentifier/doi/10.1016/j.applthermaleng.2016.12.033info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:47:11Zoai:ri.conicet.gov.ar:11336/58191instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:47:11.39CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Estimation of the surface thermal resistances and heat loss by conduction using thermography
title Estimation of the surface thermal resistances and heat loss by conduction using thermography
spellingShingle Estimation of the surface thermal resistances and heat loss by conduction using thermography
Marino, Beatriz Maria
Actual Use Conditions
Heat Loss
In-Situ Measurements
Infrared Thermography
Surface Thermal Resistance
title_short Estimation of the surface thermal resistances and heat loss by conduction using thermography
title_full Estimation of the surface thermal resistances and heat loss by conduction using thermography
title_fullStr Estimation of the surface thermal resistances and heat loss by conduction using thermography
title_full_unstemmed Estimation of the surface thermal resistances and heat loss by conduction using thermography
title_sort Estimation of the surface thermal resistances and heat loss by conduction using thermography
dc.creator.none.fl_str_mv Marino, Beatriz Maria
Muñoz, Natalia
Thomas, Luis Pablo
author Marino, Beatriz Maria
author_facet Marino, Beatriz Maria
Muñoz, Natalia
Thomas, Luis Pablo
author_role author
author2 Muñoz, Natalia
Thomas, Luis Pablo
author2_role author
author
dc.subject.none.fl_str_mv Actual Use Conditions
Heat Loss
In-Situ Measurements
Infrared Thermography
Surface Thermal Resistance
topic Actual Use Conditions
Heat Loss
In-Situ Measurements
Infrared Thermography
Surface Thermal Resistance
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The thermal insulation of a construction is established by the resistances of the materials employed and the thermal surface resistances, which may vary significantly from one building to another because of its location and climatic conditions. The importance of the surface resistances has been underestimated probably due to its complex calculation and variability since they depend on the differences of temperature and humidity, wind, shape of the envelope, surrounding obstacles such as trees, and other buildings. In this work, infrared thermography is employed to obtain the internal and external surface temperatures of the façades of a representative construction as part of a methodology to quantify the heat loss by conduction through the building envelope. U-values that encompass the characteristics of the envelope components and the thermal surface resistances are used. It is found that the thermal resistances of the air boundary layers vary during the day and, in most cases, are much greater than the values currently suggested by local regulations, thus significantly reducing the effective thermal conductivity of the envelope with respect to the design value. The findings show how important it is to quantitatively determine the heat flux through the building envelope on site for an already existing construction and corroborate the value estimated in the design stage.
Fil: Marino, Beatriz Maria. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
Fil: Muñoz, Natalia. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
Fil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires. - Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones en Física e Ingeniería del Centro de la Provincia de Buenos Aires; Argentina
description The thermal insulation of a construction is established by the resistances of the materials employed and the thermal surface resistances, which may vary significantly from one building to another because of its location and climatic conditions. The importance of the surface resistances has been underestimated probably due to its complex calculation and variability since they depend on the differences of temperature and humidity, wind, shape of the envelope, surrounding obstacles such as trees, and other buildings. In this work, infrared thermography is employed to obtain the internal and external surface temperatures of the façades of a representative construction as part of a methodology to quantify the heat loss by conduction through the building envelope. U-values that encompass the characteristics of the envelope components and the thermal surface resistances are used. It is found that the thermal resistances of the air boundary layers vary during the day and, in most cases, are much greater than the values currently suggested by local regulations, thus significantly reducing the effective thermal conductivity of the envelope with respect to the design value. The findings show how important it is to quantitatively determine the heat flux through the building envelope on site for an already existing construction and corroborate the value estimated in the design stage.
publishDate 2017
dc.date.none.fl_str_mv 2017-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/58191
Marino, Beatriz Maria; Muñoz, Natalia; Thomas, Luis Pablo; Estimation of the surface thermal resistances and heat loss by conduction using thermography; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 114; 3-2017; 1213-1221
1359-4311
CONICET Digital
CONICET
url http://hdl.handle.net/11336/58191
identifier_str_mv Marino, Beatriz Maria; Muñoz, Natalia; Thomas, Luis Pablo; Estimation of the surface thermal resistances and heat loss by conduction using thermography; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 114; 3-2017; 1213-1221
1359-4311
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1359431116339552
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.applthermaleng.2016.12.033
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844613470127915008
score 13.070432

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