Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta scientiarum. Technology (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/44444 |
Resumo: | Most of the solar collectors experiments are carried out under clear-sky conditions to evaluate the maximum performance of collectors, even though this condition is not critical for some uses, such as cooking. The optical and thermal performance of a solar oven heated by Scheffler concentrator is here analyzed in more adverse weather conditions. The receiver for conversion and heat transfer of the concentrated solar energy is coupled to an oven specially developed for this work. The Scheffler concentrator geometry is a lateral cut angled 43.23° of a paraboloid matrix, and it works in a two-axis tracking system, to always maintain its focal image at the stationary receiver with the progression of the Earth rotation and solar declination movements. A model for distributing the daily radiation over the hours is used to compare the results. The time-constant experimental method is considered. The heating and cooling tests were carried out at the official local time. The maximum temperature achieved by the absorber was 328°C, and the maximum average temperature in the oven was 150°C. The results for heat loss factor were evaluated, and the trends for thermal efficiency and optical efficiency factor were analyzed for the system considered |
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Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditionssolar energy; scheffler paraboloid concentrator; solar oven; cloudy conditions.Most of the solar collectors experiments are carried out under clear-sky conditions to evaluate the maximum performance of collectors, even though this condition is not critical for some uses, such as cooking. The optical and thermal performance of a solar oven heated by Scheffler concentrator is here analyzed in more adverse weather conditions. The receiver for conversion and heat transfer of the concentrated solar energy is coupled to an oven specially developed for this work. The Scheffler concentrator geometry is a lateral cut angled 43.23° of a paraboloid matrix, and it works in a two-axis tracking system, to always maintain its focal image at the stationary receiver with the progression of the Earth rotation and solar declination movements. A model for distributing the daily radiation over the hours is used to compare the results. The time-constant experimental method is considered. The heating and cooling tests were carried out at the official local time. The maximum temperature achieved by the absorber was 328°C, and the maximum average temperature in the oven was 150°C. The results for heat loss factor were evaluated, and the trends for thermal efficiency and optical efficiency factor were analyzed for the system consideredUniversidade Estadual De Maringá2020-02-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/4444410.4025/actascitechnol.v42i1.44444Acta Scientiarum. Technology; Vol 42 (2020): Publicação contínua; e44444Acta Scientiarum. Technology; v. 42 (2020): Publicação contínua; e444441806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/44444/751375149591Copyright (c) 2020 Acta Scientiarum. Technologyhttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessDib, Erick AlfredMarques, Luanda GimenoFigueiredo, Renan Tavares Fiorelli, Flávio Augusto Sanzovo2020-05-05T15:19:26Zoai:periodicos.uem.br/ojs:article/44444Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2020-05-05T15:19:26Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
title |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
spellingShingle |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions Dib, Erick Alfred solar energy; scheffler paraboloid concentrator; solar oven; cloudy conditions. |
title_short |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
title_full |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
title_fullStr |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
title_full_unstemmed |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
title_sort |
Technical analysis of an oven with coupled receiver for scheffler solar concentrator tested under cloudy weather conditions |
author |
Dib, Erick Alfred |
author_facet |
Dib, Erick Alfred Marques, Luanda Gimeno Figueiredo, Renan Tavares Fiorelli, Flávio Augusto Sanzovo |
author_role |
author |
author2 |
Marques, Luanda Gimeno Figueiredo, Renan Tavares Fiorelli, Flávio Augusto Sanzovo |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Dib, Erick Alfred Marques, Luanda Gimeno Figueiredo, Renan Tavares Fiorelli, Flávio Augusto Sanzovo |
dc.subject.por.fl_str_mv |
solar energy; scheffler paraboloid concentrator; solar oven; cloudy conditions. |
topic |
solar energy; scheffler paraboloid concentrator; solar oven; cloudy conditions. |
description |
Most of the solar collectors experiments are carried out under clear-sky conditions to evaluate the maximum performance of collectors, even though this condition is not critical for some uses, such as cooking. The optical and thermal performance of a solar oven heated by Scheffler concentrator is here analyzed in more adverse weather conditions. The receiver for conversion and heat transfer of the concentrated solar energy is coupled to an oven specially developed for this work. The Scheffler concentrator geometry is a lateral cut angled 43.23° of a paraboloid matrix, and it works in a two-axis tracking system, to always maintain its focal image at the stationary receiver with the progression of the Earth rotation and solar declination movements. A model for distributing the daily radiation over the hours is used to compare the results. The time-constant experimental method is considered. The heating and cooling tests were carried out at the official local time. The maximum temperature achieved by the absorber was 328°C, and the maximum average temperature in the oven was 150°C. The results for heat loss factor were evaluated, and the trends for thermal efficiency and optical efficiency factor were analyzed for the system considered |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-02-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/44444 10.4025/actascitechnol.v42i1.44444 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/44444 |
identifier_str_mv |
10.4025/actascitechnol.v42i1.44444 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/44444/751375149591 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2020 Acta Scientiarum. Technology https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2020 Acta Scientiarum. Technology https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
publisher.none.fl_str_mv |
Universidade Estadual De Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Technology; Vol 42 (2020): Publicação contínua; e44444 Acta Scientiarum. Technology; v. 42 (2020): Publicação contínua; e44444 1806-2563 1807-8664 reponame:Acta scientiarum. Technology (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta scientiarum. Technology (Online) |
collection |
Acta scientiarum. Technology (Online) |
repository.name.fl_str_mv |
Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
||actatech@uem.br |
_version_ |
1799315336935243776 |