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....
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universidad de Sevilla (US) |
| Repositorio: | idUS. Depósito de Investigación de la Universidad de Sevilla |
| OAI Identifier: | oai:idus.us.es:11441/147193 |
| Acceso en línea: | https://hdl.handle.net/11441/147193 https://doi.org/10.1016/j.solmat.2015.04.009 |
| Access Level: | acceso abierto |
| Palabra clave: | Thermal solar energy Solar selective coatings Efficiency Infrared radiation Spectral emissivity |
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Importance of the spectral emissivity measurements at working temperature to determine the efficiency of a solar selective coatingEchániz, T.Setién Fernández, I.Pérez Sáez, R. B.Prieto, C.Escobar-Galindo, RamónTello, M.J.Thermal 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.ScienceDirectFísica Aplicada I2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/147193https://doi.org/10.1016/j.solmat.2015.04.009reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésSolar Energy Materials and Solar Cells, 140, 249-252.https://www.sciencedirect.com/science/article/pii/S0927024815001646info:eu-repo/semantics/openAccessoai:idus.us.es:11441/1471932026-06-17T12:51:07Z |
| 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, T. 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, T. Setién Fernández, I. Pérez Sáez, R. B. Prieto, C. Escobar-Galindo, Ramón Tello, M.J. |
| author |
Echániz, T. |
| author_facet |
Echániz, T. Setién Fernández, I. Pérez Sáez, R. B. Prieto, C. Escobar-Galindo, Ramón Tello, M.J. |
| author_role |
author |
| author2 |
Setién Fernández, I. Pérez Sáez, R. B. Prieto, C. Escobar-Galindo, Ramón Tello, M.J. |
| author2_role |
author author author author author |
| dc.contributor.none.fl_str_mv |
Física Aplicada I |
| 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 |
| 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/11441/147193 https://doi.org/10.1016/j.solmat.2015.04.009 |
| url |
https://hdl.handle.net/11441/147193 https://doi.org/10.1016/j.solmat.2015.04.009 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Solar Energy Materials and Solar Cells, 140, 249-252. https://www.sciencedirect.com/science/article/pii/S0927024815001646 |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
ScienceDirect |
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ScienceDirect |
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reponame:idUS. Depósito de Investigación de la Universidad de Sevilla instname:Universidad de Sevilla (US) |
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Universidad de Sevilla (US) |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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idUS. Depósito de Investigación de la Universidad de Sevilla |
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15.301603 |