Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.1/18405 |
Resumo: | In the present work, an improvement of protocol widely used for reporting the thermal behaviour of solar cookers is communicated to the scientific community. The linear regression used to represent the standardised cooking power is based on the well-known Hottel-Whillier-Bliss equation written in dimensionless format. The authors’ new formulation procedure for estimating the standardised power includes a correction for the difference between the load temperature and the ambient air temperature of the procedure of ASAE S580.1 Standard. It is derived from a simple theoretical deduction, similar to the ones usually applied to solar thermal flat collectors. The correction factor relates itself with the ratio between the measured solar irradiance and the solar irradiance chosen as a standard value. As one example, test results of a funnel cooker loaded with water are used to show the impact of the improvement of the procedure for reporting performance of a solar cooker. The procedure is valid only for solar cookers evidencing a clear linear performance curve. |
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Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulationSolar cookersCooker powerLinear regressionStandardised powerConsistent improvementCozinha solarIn the present work, an improvement of protocol widely used for reporting the thermal behaviour of solar cookers is communicated to the scientific community. The linear regression used to represent the standardised cooking power is based on the well-known Hottel-Whillier-Bliss equation written in dimensionless format. The authors’ new formulation procedure for estimating the standardised power includes a correction for the difference between the load temperature and the ambient air temperature of the procedure of ASAE S580.1 Standard. It is derived from a simple theoretical deduction, similar to the ones usually applied to solar thermal flat collectors. The correction factor relates itself with the ratio between the measured solar irradiance and the solar irradiance chosen as a standard value. As one example, test results of a funnel cooker loaded with water are used to show the impact of the improvement of the procedure for reporting performance of a solar cooker. The procedure is valid only for solar cookers evidencing a clear linear performance curve.SapientiaRuivo, CelestinoCoccia, GianlucaDi Nicola, GiovanniCarrillo-Andrés, AntonioApaolaza-Pagoaga, Xabier2022-10-18T10:04:46Z2022-102022-10-17T14:51:09Z2022-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/18405engcv-prod-306042410.1016/j.renene.2022.10.0411879-0682info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:30:39Zoai:sapientia.ualg.pt:10400.1/18405Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:08:11.060936Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
title |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
spellingShingle |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation Ruivo, Celestino Solar cookers Cooker power Linear regression Standardised power Consistent improvement Cozinha solar |
title_short |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
title_full |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
title_fullStr |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
title_full_unstemmed |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
title_sort |
Standardised power of solar cookers with a linear performance curve following the Hottel-Whillier-Bliss formulation |
author |
Ruivo, Celestino |
author_facet |
Ruivo, Celestino Coccia, Gianluca Di Nicola, Giovanni Carrillo-Andrés, Antonio Apaolaza-Pagoaga, Xabier |
author_role |
author |
author2 |
Coccia, Gianluca Di Nicola, Giovanni Carrillo-Andrés, Antonio Apaolaza-Pagoaga, Xabier |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Sapientia |
dc.contributor.author.fl_str_mv |
Ruivo, Celestino Coccia, Gianluca Di Nicola, Giovanni Carrillo-Andrés, Antonio Apaolaza-Pagoaga, Xabier |
dc.subject.por.fl_str_mv |
Solar cookers Cooker power Linear regression Standardised power Consistent improvement Cozinha solar |
topic |
Solar cookers Cooker power Linear regression Standardised power Consistent improvement Cozinha solar |
description |
In the present work, an improvement of protocol widely used for reporting the thermal behaviour of solar cookers is communicated to the scientific community. The linear regression used to represent the standardised cooking power is based on the well-known Hottel-Whillier-Bliss equation written in dimensionless format. The authors’ new formulation procedure for estimating the standardised power includes a correction for the difference between the load temperature and the ambient air temperature of the procedure of ASAE S580.1 Standard. It is derived from a simple theoretical deduction, similar to the ones usually applied to solar thermal flat collectors. The correction factor relates itself with the ratio between the measured solar irradiance and the solar irradiance chosen as a standard value. As one example, test results of a funnel cooker loaded with water are used to show the impact of the improvement of the procedure for reporting performance of a solar cooker. The procedure is valid only for solar cookers evidencing a clear linear performance curve. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10-18T10:04:46Z 2022-10 2022-10-17T14:51:09Z 2022-10-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.1/18405 |
url |
http://hdl.handle.net/10400.1/18405 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
cv-prod-3060424 10.1016/j.renene.2022.10.041 1879-0682 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133327374942208 |