Semi-industrial drying of vegetables using an array of large solar air collectors

Autores
Condori, Miguel Angel; Durán, Gonzalo José; Echazú, Ricardo Daniel; Altobelli, Fabiana Noelia
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The design, structure, and evaluation of an indirect solar tunnel dryer are presented. This dryer corresponds to the air forced convection type. Two similar solar dryers were built and tested with vegetables on an industrial scale in Huacalera, northern Argentina, and operated by a cooperative of small agricultural producers. Each dryer consisted of a tunnel chamber of 450 kg load capacity and a bank of 10 solar collectors of 92 m2. The bank of large solar collectors allowed temperatures in the drying chamber above 50 °C for 6 h a day, mixing with ambient air to produce the correct temperature for drying vegetables. A maximum rank of outlet temperatures of 80–90 °C and temperature differences of 50–60 °C were obtained with minimum air flow of 0.06 kg/s and without load. The dryers were operated with different vegetables, obtaining e.g. dried slicing onion with final moisture content 0.09 in approximately 16 h of sun. The optimum point of the collector efficiency was determined with airflow of 0.4 kg/s, however, lower than 0.23 kg/s airflow is needed to obtain outlet temperatures above 50 °C. A financial evaluation of the dryer was also performed as a clean energy project, reflecting that the investment return rate of the device is 13 months. In this scenario NPV improves in a 438% compared with the conventional scenario and SNPV is suitable only in the case of solar dryer. Solar drying at semi-industrial scale is feasible with the proposed technology due to the gusts of wind and the day-night thermal amplitude of Huacalera.
Fil: Condori, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Durán, Gonzalo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Echazú, Ricardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Altobelli, Fabiana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Materia
Air Solar Collector
Clean Energy Project
Drying of Vegetables
Solar Dryer
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/65181
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/65181
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Semi-industrial drying of vegetables using an array of large solar air collectorsCondori, Miguel AngelDurán, Gonzalo JoséEchazú, Ricardo DanielAltobelli, Fabiana NoeliaAir Solar CollectorClean Energy ProjectDrying of VegetablesSolar Dryerhttps://purl.org/becyt/ford/2.11https://purl.org/becyt/ford/2The design, structure, and evaluation of an indirect solar tunnel dryer are presented. This dryer corresponds to the air forced convection type. Two similar solar dryers were built and tested with vegetables on an industrial scale in Huacalera, northern Argentina, and operated by a cooperative of small agricultural producers. Each dryer consisted of a tunnel chamber of 450 kg load capacity and a bank of 10 solar collectors of 92 m2. The bank of large solar collectors allowed temperatures in the drying chamber above 50 °C for 6 h a day, mixing with ambient air to produce the correct temperature for drying vegetables. A maximum rank of outlet temperatures of 80–90 °C and temperature differences of 50–60 °C were obtained with minimum air flow of 0.06 kg/s and without load. The dryers were operated with different vegetables, obtaining e.g. dried slicing onion with final moisture content 0.09 in approximately 16 h of sun. The optimum point of the collector efficiency was determined with airflow of 0.4 kg/s, however, lower than 0.23 kg/s airflow is needed to obtain outlet temperatures above 50 °C. A financial evaluation of the dryer was also performed as a clean energy project, reflecting that the investment return rate of the device is 13 months. In this scenario NPV improves in a 438% compared with the conventional scenario and SNPV is suitable only in the case of solar dryer. Solar drying at semi-industrial scale is feasible with the proposed technology due to the gusts of wind and the day-night thermal amplitude of Huacalera.Fil: Condori, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; ArgentinaFil: Durán, Gonzalo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; ArgentinaFil: Echazú, Ricardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; ArgentinaFil: Altobelli, Fabiana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; ArgentinaElsevier2017-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/65181Condori, Miguel Angel; Durán, Gonzalo José; Echazú, Ricardo Daniel; Altobelli, Fabiana Noelia; Semi-industrial drying of vegetables using an array of large solar air collectors; Elsevier; Energy for Sustainable Development; 37; 4-2017; 1-90973-0826CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.esd.2016.11.004info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0973082616310705info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:13:18Zoai:ri.conicet.gov.ar:11336/65181instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:13:18.754CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Semi-industrial drying of vegetables using an array of large solar air collectors
title Semi-industrial drying of vegetables using an array of large solar air collectors
spellingShingle Semi-industrial drying of vegetables using an array of large solar air collectors
Condori, Miguel Angel
Air Solar Collector
Clean Energy Project
Drying of Vegetables
Solar Dryer
title_short Semi-industrial drying of vegetables using an array of large solar air collectors
title_full Semi-industrial drying of vegetables using an array of large solar air collectors
title_fullStr Semi-industrial drying of vegetables using an array of large solar air collectors
title_full_unstemmed Semi-industrial drying of vegetables using an array of large solar air collectors
title_sort Semi-industrial drying of vegetables using an array of large solar air collectors
dc.creator.none.fl_str_mv Condori, Miguel Angel
Durán, Gonzalo José
Echazú, Ricardo Daniel
Altobelli, Fabiana Noelia
author Condori, Miguel Angel
author_facet Condori, Miguel Angel
Durán, Gonzalo José
Echazú, Ricardo Daniel
Altobelli, Fabiana Noelia
author_role author
author2 Durán, Gonzalo José
Echazú, Ricardo Daniel
Altobelli, Fabiana Noelia
author2_role author
author
author
dc.subject.none.fl_str_mv Air Solar Collector
Clean Energy Project
Drying of Vegetables
Solar Dryer
topic Air Solar Collector
Clean Energy Project
Drying of Vegetables
Solar Dryer
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.11
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The design, structure, and evaluation of an indirect solar tunnel dryer are presented. This dryer corresponds to the air forced convection type. Two similar solar dryers were built and tested with vegetables on an industrial scale in Huacalera, northern Argentina, and operated by a cooperative of small agricultural producers. Each dryer consisted of a tunnel chamber of 450 kg load capacity and a bank of 10 solar collectors of 92 m2. The bank of large solar collectors allowed temperatures in the drying chamber above 50 °C for 6 h a day, mixing with ambient air to produce the correct temperature for drying vegetables. A maximum rank of outlet temperatures of 80–90 °C and temperature differences of 50–60 °C were obtained with minimum air flow of 0.06 kg/s and without load. The dryers were operated with different vegetables, obtaining e.g. dried slicing onion with final moisture content 0.09 in approximately 16 h of sun. The optimum point of the collector efficiency was determined with airflow of 0.4 kg/s, however, lower than 0.23 kg/s airflow is needed to obtain outlet temperatures above 50 °C. A financial evaluation of the dryer was also performed as a clean energy project, reflecting that the investment return rate of the device is 13 months. In this scenario NPV improves in a 438% compared with the conventional scenario and SNPV is suitable only in the case of solar dryer. Solar drying at semi-industrial scale is feasible with the proposed technology due to the gusts of wind and the day-night thermal amplitude of Huacalera.
Fil: Condori, Miguel Angel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Durán, Gonzalo José. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Echazú, Ricardo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
Fil: Altobelli, Fabiana Noelia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones en Energía no Convencional. Universidad Nacional de Salta. Facultad de Ciencias Exactas. Departamento de Física. Instituto de Investigaciones en Energía no Convencional; Argentina
description The design, structure, and evaluation of an indirect solar tunnel dryer are presented. This dryer corresponds to the air forced convection type. Two similar solar dryers were built and tested with vegetables on an industrial scale in Huacalera, northern Argentina, and operated by a cooperative of small agricultural producers. Each dryer consisted of a tunnel chamber of 450 kg load capacity and a bank of 10 solar collectors of 92 m2. The bank of large solar collectors allowed temperatures in the drying chamber above 50 °C for 6 h a day, mixing with ambient air to produce the correct temperature for drying vegetables. A maximum rank of outlet temperatures of 80–90 °C and temperature differences of 50–60 °C were obtained with minimum air flow of 0.06 kg/s and without load. The dryers were operated with different vegetables, obtaining e.g. dried slicing onion with final moisture content 0.09 in approximately 16 h of sun. The optimum point of the collector efficiency was determined with airflow of 0.4 kg/s, however, lower than 0.23 kg/s airflow is needed to obtain outlet temperatures above 50 °C. A financial evaluation of the dryer was also performed as a clean energy project, reflecting that the investment return rate of the device is 13 months. In this scenario NPV improves in a 438% compared with the conventional scenario and SNPV is suitable only in the case of solar dryer. Solar drying at semi-industrial scale is feasible with the proposed technology due to the gusts of wind and the day-night thermal amplitude of Huacalera.
publishDate 2017
dc.date.none.fl_str_mv 2017-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/65181
Condori, Miguel Angel; Durán, Gonzalo José; Echazú, Ricardo Daniel; Altobelli, Fabiana Noelia; Semi-industrial drying of vegetables using an array of large solar air collectors; Elsevier; Energy for Sustainable Development; 37; 4-2017; 1-9
0973-0826
CONICET Digital
CONICET
url http://hdl.handle.net/11336/65181
identifier_str_mv Condori, Miguel Angel; Durán, Gonzalo José; Echazú, Ricardo Daniel; Altobelli, Fabiana Noelia; Semi-industrial drying of vegetables using an array of large solar air collectors; Elsevier; Energy for Sustainable Development; 37; 4-2017; 1-9
0973-0826
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.esd.2016.11.004
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0973082616310705
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.120347

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