Energy and exergy analysis applied to the evaporative cooling process in air washers

This paper presents a study on the performance of the evaporative cooling process in air washers with the use of mass balances, energy and exergy equations. Usually, the performance of these devices is described in terms of their saturation effectiveness based on energy analysis. This method, howeve...

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Detalles Bibliográficos
Autores: Santos, Jailson Charles dos, Barros, Glauco Demóclito Tavares de, Gurgel, José Maurício Alves de Matos, Marcondes, Francisco
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Brasil
Institución:Universidade Federal do Ceará (UFC)
Repositorio:Repositório Institucional da Universidade Federal do Ceará (UFC)
Idioma:portugués
OAI Identifier:oai:repositorio.ufc.br:riufc/61664
Acceso en línea:http://www.repositorio.ufc.br/handle/riufc/61664
Access Level:acceso abierto
Palabra clave:Evaporative cooling
Air washer
Saturation effectiveness
Second law
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dc.title.pt_BR.fl_str_mv Energy and exergy analysis applied to the evaporative cooling process in air washers
title Energy and exergy analysis applied to the evaporative cooling process in air washers
spellingShingle Energy and exergy analysis applied to the evaporative cooling process in air washers
Santos, Jailson Charles dos
Evaporative cooling
Air washer
Saturation effectiveness
Second law
title_short Energy and exergy analysis applied to the evaporative cooling process in air washers
title_full Energy and exergy analysis applied to the evaporative cooling process in air washers
title_fullStr Energy and exergy analysis applied to the evaporative cooling process in air washers
title_full_unstemmed Energy and exergy analysis applied to the evaporative cooling process in air washers
title_sort Energy and exergy analysis applied to the evaporative cooling process in air washers
dc.creator.none.fl_str_mv Santos, Jailson Charles dos
Barros, Glauco Demóclito Tavares de
Gurgel, José Maurício Alves de Matos
Marcondes, Francisco
author Santos, Jailson Charles dos
author_facet Santos, Jailson Charles dos
Barros, Glauco Demóclito Tavares de
Gurgel, José Maurício Alves de Matos
Marcondes, Francisco
author_role author
author2 Barros, Glauco Demóclito Tavares de
Gurgel, José Maurício Alves de Matos
Marcondes, Francisco
author2_role author
author
author
dc.subject.por.fl_str_mv Evaporative cooling
Air washer
Saturation effectiveness
Second law
topic Evaporative cooling
Air washer
Saturation effectiveness
Second law
description This paper presents a study on the performance of the evaporative cooling process in air washers with the use of mass balances, energy and exergy equations. Usually, the performance of these devices is described in terms of their saturation effectiveness based on energy analysis. This method, however, is inappropriate to identify the main sources of irreversibility within the process. It is also unsuitable to give the optimum conditions for operating the system with a proper use of energy resources. Thus, an exergy analysis was developed to complement the energy analysis of the process. A mathematical model based on mass and energy balances was used to determine the water and air properties in the washer. The influence of the humidity and temperature of the air and water at the inlet, the washer length in the saturation effectiveness, and the second law efficiency was investigated. The results showed that the best condition of the intake air for obtaining thermal comfort does not coincide with the best condition for the thermodynamic performance of the system. The energy and exergy analyses were carried out simultaneously to generate the conditions required for optimum performance with minimal exergy depletion.
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2021-10-29T12:20:53Z
dc.date.available.fl_str_mv 2021-10-29T12:20:53Z
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.citation.fl_str_mv SANTOS, Jailson Charles dos; BARROS, Glauco Demóclito Tavares de; GURGEL, Jose Mauricio; MARCONDES, Francisco. Energy and exergy analysis applied to the evaporative cooling process in air washers. International Journal of Refrigeration, v. 36, p. 1154-1161, 2013.
dc.identifier.uri.fl_str_mv http://www.repositorio.ufc.br/handle/riufc/61664
dc.identifier.issn.none.fl_str_mv 0140-7007
dc.identifier.other.none.fl_str_mv doi.org/10.1016/j.ijrefrig.2012.12.012
identifier_str_mv SANTOS, Jailson Charles dos; BARROS, Glauco Demóclito Tavares de; GURGEL, Jose Mauricio; MARCONDES, Francisco. Energy and exergy analysis applied to the evaporative cooling process in air washers. International Journal of Refrigeration, v. 36, p. 1154-1161, 2013.
0140-7007
doi.org/10.1016/j.ijrefrig.2012.12.012
url http://www.repositorio.ufc.br/handle/riufc/61664
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv International Institute of Refrigeration (IIR) ; http://www.elsevier.com
publisher.none.fl_str_mv International Institute of Refrigeration (IIR) ; http://www.elsevier.com
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
bitstream.url.fl_str_mv http://repositorio.ufc.br/bitstream/riufc/61664/2/license.txt
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repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
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spelling 2021-10-29T12:20:53Z2021-10-29T12:20:53Z2013SANTOS, Jailson Charles dos; BARROS, Glauco Demóclito Tavares de; GURGEL, Jose Mauricio; MARCONDES, Francisco. Energy and exergy analysis applied to the evaporative cooling process in air washers. International Journal of Refrigeration, v. 36, p. 1154-1161, 2013.0140-7007doi.org/10.1016/j.ijrefrig.2012.12.012http://www.repositorio.ufc.br/handle/riufc/61664This paper presents a study on the performance of the evaporative cooling process in air washers with the use of mass balances, energy and exergy equations. Usually, the performance of these devices is described in terms of their saturation effectiveness based on energy analysis. This method, however, is inappropriate to identify the main sources of irreversibility within the process. It is also unsuitable to give the optimum conditions for operating the system with a proper use of energy resources. Thus, an exergy analysis was developed to complement the energy analysis of the process. A mathematical model based on mass and energy balances was used to determine the water and air properties in the washer. The influence of the humidity and temperature of the air and water at the inlet, the washer length in the saturation effectiveness, and the second law efficiency was investigated. The results showed that the best condition of the intake air for obtaining thermal comfort does not coincide with the best condition for the thermodynamic performance of the system. The energy and exergy analyses were carried out simultaneously to generate the conditions required for optimum performance with minimal exergy depletion.International Institute of Refrigeration (IIR) ; http://www.elsevier.comEvaporative coolingAir washerSaturation effectivenessSecond lawEnergy and exergy analysis applied to the evaporative cooling process in air washersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleporreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccessSantos, Jailson Charles dosBarros, Glauco Demóclito Tavares deGurgel, José Maurício Alves de MatosMarcondes, FranciscoLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ufc.br/bitstream/riufc/61664/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINAL2013_art_jcsantos.pdf2013_art_jcsantos.pdfapplication/pdf363981http://repositorio.ufc.br/bitstream/riufc/61664/1/2013_art_jcsantos.pdf2c99eda7dec64f161859aa690158b717MD51riufc/616642021-12-14 10:11:29.466oai:repositorio.ufc.br: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Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2021-12-14T13:11:29Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
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