Measurement of the thermal conductivity of fluids using laser spot lock-in thermography

In this work, we propose a new method to retrieve the thermal conductivity of fluids, kf, using laser spot lock-in infrared thermography. The measurement cell consists in two paralepidid blocks separated by a narrow gap of variable and known width, L. This gap can be filled with a gas or a liquid, p...

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Autores: Bedoya Pérez, Adrián Felipe, Colom Serra, Mateu, Mendioroz Astigarraga, María Aránzazu, Salazar Hernández, Agustín, Marín Moares, Ernesto
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/63090
Acceso en línea:http://hdl.handle.net/10810/63090
Access Level:acceso abierto
Palabra clave:laser spot lock-in infrared thermography
thermal conductivity
fluids
thermal resistance
interfacial layer
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spelling Measurement of the thermal conductivity of fluids using laser spot lock-in thermographyBedoya Pérez, Adrián FelipeColom Serra, MateuMendioroz Astigarraga, María AránzazuSalazar Hernández, AgustínMarín Moares, Ernestolaser spot lock-in infrared thermographythermal conductivityfluidsthermal resistanceinterfacial layerIn this work, we propose a new method to retrieve the thermal conductivity of fluids, kf, using laser spot lock-in infrared thermography. The measurement cell consists in two paralepidid blocks separated by a narrow gap of variable and known width, L. This gap can be filled with a gas or a liquid, producing a thermal contact resistance, Rth, which quantifies the thermal barrier to heat propagation. By focusing the laser spot close to the interface between the two solids, this thermal contact resistance can be obtained by fitting the temperature field recorded by the infrared camera to its analytical expression. Using the wellknown relationship Rth = L/kf, the thermal conductivity of the fluid is obtained from a simple linear relation. Measurements performed in test samples show a good agreement between determined thermal conductivities and literature reported values, demonstrating the validity of the method.This work was partially supported by research grants from SIP-IPN (20181764, 20196720) and CONACyT (205640). The support of COFAA-IPN by the SIBE and BEIFI programs is also acknowledged. A.B. greatly thanks the support of CONACyT through the Beca Mixta Program for a research stay at the UPV/EHU and UPV/EHU support through “Ayuda para facilitar la estancia en la UPV/EHU de personas investigadoras en formación de países latinoamericanos matriculadas en las enseñanzas de doctorado de la UPV/EHU (2019)”. Authors are also grateful for support by Ministerio de Economía y Competitividad (DPI2016-77719-R, AEI/FEDER, UE), by Gobierno Vasco (PIBA2018/15) and by Universidad del País Vasco UPV/EHU (GIU16/33)Elsevier202320232020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/63090reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/MINECO/DPI2016-77719-R/https://www.sciencedirect.com/science/article/pii/S0263224120302785info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/© 2020 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)oai:addi.ehu.eus:10810/630902026-06-18T09:23:17Z
dc.title.none.fl_str_mv Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
title Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
spellingShingle Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
Bedoya Pérez, Adrián Felipe
laser spot lock-in infrared thermography
thermal conductivity
fluids
thermal resistance
interfacial layer
title_short Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
title_full Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
title_fullStr Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
title_full_unstemmed Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
title_sort Measurement of the thermal conductivity of fluids using laser spot lock-in thermography
dc.creator.none.fl_str_mv Bedoya Pérez, Adrián Felipe
Colom Serra, Mateu
Mendioroz Astigarraga, María Aránzazu
Salazar Hernández, Agustín
Marín Moares, Ernesto
author Bedoya Pérez, Adrián Felipe
author_facet Bedoya Pérez, Adrián Felipe
Colom Serra, Mateu
Mendioroz Astigarraga, María Aránzazu
Salazar Hernández, Agustín
Marín Moares, Ernesto
author_role author
author2 Colom Serra, Mateu
Mendioroz Astigarraga, María Aránzazu
Salazar Hernández, Agustín
Marín Moares, Ernesto
author2_role author
author
author
author
dc.subject.none.fl_str_mv laser spot lock-in infrared thermography
thermal conductivity
fluids
thermal resistance
interfacial layer
topic laser spot lock-in infrared thermography
thermal conductivity
fluids
thermal resistance
interfacial layer
description In this work, we propose a new method to retrieve the thermal conductivity of fluids, kf, using laser spot lock-in infrared thermography. The measurement cell consists in two paralepidid blocks separated by a narrow gap of variable and known width, L. This gap can be filled with a gas or a liquid, producing a thermal contact resistance, Rth, which quantifies the thermal barrier to heat propagation. By focusing the laser spot close to the interface between the two solids, this thermal contact resistance can be obtained by fitting the temperature field recorded by the infrared camera to its analytical expression. Using the wellknown relationship Rth = L/kf, the thermal conductivity of the fluid is obtained from a simple linear relation. Measurements performed in test samples show a good agreement between determined thermal conductivities and literature reported values, demonstrating the validity of the method.
publishDate 2020
dc.date.none.fl_str_mv 2020
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/10810/63090
url http://hdl.handle.net/10810/63090
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MINECO/DPI2016-77719-R/
https://www.sciencedirect.com/science/article/pii/S0263224120302785
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2020 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
© 2020 Elsevier under CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
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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