Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating

The total emissivity of the absorbing surfaces is a critical parameter in the calculation of the radiative thermal losses in solar thermal collectors. This is because the radiative heat losses have a significant economic impact on the final cost of the electricity produced in a solar thermal plant....

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Autores: Echániz Ariceta, Telmo, Setién Fernández, Iñigo, Pérez Sáez, Raúl Benjamín, Prieto, Carlos, Escobar Galindo, Ramón, Tello León, Manuel
Tipo de documento: artigo
Data de publicação:2015
País:España
Recursos:Universidad del País Vasco
Repositório:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/64321
Acesso em linha:http://hdl.handle.net/10810/64321
Access Level:Acceso aberto
Palavra-chave:thermal solar energy
solar selective coatings
efficiency
infrared radiation
spectral emissivity
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spelling Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coatingEchániz Ariceta, TelmoSetién Fernández, IñigoPérez Sáez, Raúl BenjamínPrieto, CarlosEscobar Galindo, RamónTello León, Manuelthermal solar energysolar selective coatingsefficiencyinfrared radiationspectral emissivityThe total emissivity of the absorbing surfaces is a critical parameter in the calculation of the radiative thermal losses in solar thermal collectors. This is because the radiative heat losses have a significant economic impact on the final cost of the electricity produced in a solar thermal plant. This paper demonstrates the need to calculate the total emissivity from spectral emissivity measurements at the working temperature of the solar thermal collector, instead of using extrapolated values from spectral emissivities measured at room temperature. Usual uncertainties produced by the estimation of the total emissivity, in which its temperature dependence is only introduced by the Planck function, are analyzed.This work has been carried out with the financial support of the ETORTEK and SAIOTEK 2013 program (Project numbers S-PC08UN07 and S-PE13UN123 respectively) of the Basque Government in collaboration with CIC-Energigune. T. Echániz acknowledges the Basque Government their support through a Ph.D. fellowship.Elsevier202420242015info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/64321reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://doi.org/10.1016/j.solmat.2015.04.009info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/© 2015. This manuscript version is made available under the CC-BY-NCND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/oai:addi.ehu.eus:10810/643212026-06-18T09:23:17Z
dc.title.none.fl_str_mv Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
title Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
spellingShingle Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
Echániz Ariceta, Telmo
thermal solar energy
solar selective coatings
efficiency
infrared radiation
spectral emissivity
title_short Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
title_full Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
title_fullStr Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
title_full_unstemmed Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
title_sort Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coating
dc.creator.none.fl_str_mv Echániz Ariceta, Telmo
Setién Fernández, Iñigo
Pérez Sáez, Raúl Benjamín
Prieto, Carlos
Escobar Galindo, Ramón
Tello León, Manuel
author Echániz Ariceta, Telmo
author_facet Echániz Ariceta, Telmo
Setién Fernández, Iñigo
Pérez Sáez, Raúl Benjamín
Prieto, Carlos
Escobar Galindo, Ramón
Tello León, Manuel
author_role author
author2 Setién Fernández, Iñigo
Pérez Sáez, Raúl Benjamín
Prieto, Carlos
Escobar Galindo, Ramón
Tello León, Manuel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv thermal solar energy
solar selective coatings
efficiency
infrared radiation
spectral emissivity
topic thermal solar energy
solar selective coatings
efficiency
infrared radiation
spectral emissivity
description The total emissivity of the absorbing surfaces is a critical parameter in the calculation of the radiative thermal losses in solar thermal collectors. This is because the radiative heat losses have a significant economic impact on the final cost of the electricity produced in a solar thermal plant. This paper demonstrates the need to calculate the total emissivity from spectral emissivity measurements at the working temperature of the solar thermal collector, instead of using extrapolated values from spectral emissivities measured at room temperature. Usual uncertainties produced by the estimation of the total emissivity, in which its temperature dependence is only introduced by the Planck function, are analyzed.
publishDate 2015
dc.date.none.fl_str_mv 2015
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/10810/64321
url http://hdl.handle.net/10810/64321
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.solmat.2015.04.009
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
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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score 15,301603

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