Hybrid system simulation to supply heated air to a solar food dryer
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/216710 |
Resumo: | The intermittence of solar radiation, due to continuous rainy or cloudy days, is a limitation of simple and small solar dryers. These conditions often make them impossible to use. By including storage systems (thermal accumulation) and/or auxiliary energy sources, drying processes or dehydration can be conducted continuously, even during periods of low insolation. Therefore, the present work simulates and evaluates the thermal and energetic behavior of a hybrid system for heating the air that is directed to the dehydration chamber of a solar food dryer. The software selected for the simulation was TRNSYS. The simulated hybrid system consists of a flat plate solar collector and an arrangement of electrical resistors that guarantee the entry of air, at a constant temperature, into the dehydration chamber. The target temperature selected is 70 °C, and the absence of food products in the chamber is assumed. An arrangement with four electric resistors totaling 1900 W, with three different powers of 1000 W, 500 W, and 200 W proved adequate to guarantee the entrance of air at a constant temperature when considering the climatic conditions of a city in the South of Brazil. |
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Rodrigues, Letícia JenischBasso, Diego Morello2020-12-18T04:14:15Z20200100-6916http://hdl.handle.net/10183/216710001119555The intermittence of solar radiation, due to continuous rainy or cloudy days, is a limitation of simple and small solar dryers. These conditions often make them impossible to use. By including storage systems (thermal accumulation) and/or auxiliary energy sources, drying processes or dehydration can be conducted continuously, even during periods of low insolation. Therefore, the present work simulates and evaluates the thermal and energetic behavior of a hybrid system for heating the air that is directed to the dehydration chamber of a solar food dryer. The software selected for the simulation was TRNSYS. The simulated hybrid system consists of a flat plate solar collector and an arrangement of electrical resistors that guarantee the entry of air, at a constant temperature, into the dehydration chamber. The target temperature selected is 70 °C, and the absence of food products in the chamber is assumed. An arrangement with four electric resistors totaling 1900 W, with three different powers of 1000 W, 500 W, and 200 W proved adequate to guarantee the entrance of air at a constant temperature when considering the climatic conditions of a city in the South of Brazil.application/pdfengEngenharia Agrícola. Jaboticabal, SP. Vol. 40, n. 2 (Mar./Apr. 2020), p. 154-161ResistoresColetor solarRadiação térmicaElectrical resistor arrangementFlat plate solar collectorAuxiliary heating systemTRNHybrid system simulation to supply heated air to a solar food dryerinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001119555.pdf.txt001119555.pdf.txtExtracted Texttext/plain26290http://www.lume.ufrgs.br/bitstream/10183/216710/2/001119555.pdf.txt8d3f355cb440d1ae106b399c5e0723a9MD52ORIGINAL001119555.pdfTexto completo (inglês)application/pdf754066http://www.lume.ufrgs.br/bitstream/10183/216710/1/001119555.pdf1e721b946115971362033940d0c10836MD5110183/2167102020-12-19 05:19:51.027816oai:www.lume.ufrgs.br:10183/216710Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2020-12-19T07:19:51Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Hybrid system simulation to supply heated air to a solar food dryer |
title |
Hybrid system simulation to supply heated air to a solar food dryer |
spellingShingle |
Hybrid system simulation to supply heated air to a solar food dryer Rodrigues, Letícia Jenisch Resistores Coletor solar Radiação térmica Electrical resistor arrangement Flat plate solar collector Auxiliary heating system TRN |
title_short |
Hybrid system simulation to supply heated air to a solar food dryer |
title_full |
Hybrid system simulation to supply heated air to a solar food dryer |
title_fullStr |
Hybrid system simulation to supply heated air to a solar food dryer |
title_full_unstemmed |
Hybrid system simulation to supply heated air to a solar food dryer |
title_sort |
Hybrid system simulation to supply heated air to a solar food dryer |
author |
Rodrigues, Letícia Jenisch |
author_facet |
Rodrigues, Letícia Jenisch Basso, Diego Morello |
author_role |
author |
author2 |
Basso, Diego Morello |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Rodrigues, Letícia Jenisch Basso, Diego Morello |
dc.subject.por.fl_str_mv |
Resistores Coletor solar Radiação térmica |
topic |
Resistores Coletor solar Radiação térmica Electrical resistor arrangement Flat plate solar collector Auxiliary heating system TRN |
dc.subject.eng.fl_str_mv |
Electrical resistor arrangement Flat plate solar collector Auxiliary heating system TRN |
description |
The intermittence of solar radiation, due to continuous rainy or cloudy days, is a limitation of simple and small solar dryers. These conditions often make them impossible to use. By including storage systems (thermal accumulation) and/or auxiliary energy sources, drying processes or dehydration can be conducted continuously, even during periods of low insolation. Therefore, the present work simulates and evaluates the thermal and energetic behavior of a hybrid system for heating the air that is directed to the dehydration chamber of a solar food dryer. The software selected for the simulation was TRNSYS. The simulated hybrid system consists of a flat plate solar collector and an arrangement of electrical resistors that guarantee the entry of air, at a constant temperature, into the dehydration chamber. The target temperature selected is 70 °C, and the absence of food products in the chamber is assumed. An arrangement with four electric resistors totaling 1900 W, with three different powers of 1000 W, 500 W, and 200 W proved adequate to guarantee the entrance of air at a constant temperature when considering the climatic conditions of a city in the South of Brazil. |
publishDate |
2020 |
dc.date.accessioned.fl_str_mv |
2020-12-18T04:14:15Z |
dc.date.issued.fl_str_mv |
2020 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/216710 |
dc.identifier.issn.pt_BR.fl_str_mv |
0100-6916 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001119555 |
identifier_str_mv |
0100-6916 001119555 |
url |
http://hdl.handle.net/10183/216710 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Engenharia Agrícola. Jaboticabal, SP. Vol. 40, n. 2 (Mar./Apr. 2020), p. 154-161 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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