Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode

Autores
Rios Rodriguez, Gustavo Adolfo; Garelli, Luciano; Storti, Mario Alberto; Granata, Daniel; Amadei, Mauro; Rossetti, Marcelo
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper presents semi-analytical calculations, computational fluid dynamic simulations and experimental measurements accomplished on a typical 30 MVA power transformer. An ad hoc workbench was devised to carry out the experimental measurements. This facility allowed to estimate the values of different key variables involved in heat dissipation within the radiator, like convective heat transfer coefficients, oil-flow rate, air-flow speed between radiator fins and overall dissipated heat, among others. The main objectives of the study are to analyze the cooling capacity of the current radiator design working in ONAN mode and to validate the numerical simulation and calculation procedures for further design optimizations. The coupled thermo-hydraulic numerical simulations were performed on a computer cluster due to the high computational cost of the resulting models. The results of the simulations show good agreement with the experimentally measured values and with those obtained with the semi-analytical model, thus confirming that this model together with the CFD simulations are an accurate analysis tool. The heat transfer coefficients in the oil, the radiator panel and the air are computed. It is found that convective heat transfer from the panel to the air is approximately 10 times lower than heat transfer in the oil. Possible improvements on the current radiator design are briefly mentioned.
Fil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Granata, Daniel. Tadeo Czerweny S.a.; Argentina
Fil: Amadei, Mauro. Tadeo Czerweny S.a.; Argentina
Fil: Rossetti, Marcelo. Tadeo Czerweny S.a.; Argentina
Materia
COMPUTATIONAL FLUID DYNAMICS
EXPERIMENTAL MEASUREMENTS
HEAT DISSIPATION
ONAN
POWER TRANSFORMER
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:11336/38289
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/38289
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN modeRios Rodriguez, Gustavo AdolfoGarelli, LucianoStorti, Mario AlbertoGranata, DanielAmadei, MauroRossetti, MarceloCOMPUTATIONAL FLUID DYNAMICSEXPERIMENTAL MEASUREMENTSHEAT DISSIPATIONONANPOWER TRANSFORMERThis paper presents semi-analytical calculations, computational fluid dynamic simulations and experimental measurements accomplished on a typical 30 MVA power transformer. An ad hoc workbench was devised to carry out the experimental measurements. This facility allowed to estimate the values of different key variables involved in heat dissipation within the radiator, like convective heat transfer coefficients, oil-flow rate, air-flow speed between radiator fins and overall dissipated heat, among others. The main objectives of the study are to analyze the cooling capacity of the current radiator design working in ONAN mode and to validate the numerical simulation and calculation procedures for further design optimizations. The coupled thermo-hydraulic numerical simulations were performed on a computer cluster due to the high computational cost of the resulting models. The results of the simulations show good agreement with the experimentally measured values and with those obtained with the semi-analytical model, thus confirming that this model together with the CFD simulations are an accurate analysis tool. The heat transfer coefficients in the oil, the radiator panel and the air are computed. It is found that convective heat transfer from the panel to the air is approximately 10 times lower than heat transfer in the oil. Possible improvements on the current radiator design are briefly mentioned.Fil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; ArgentinaFil: Granata, Daniel. Tadeo Czerweny S.a.; ArgentinaFil: Amadei, Mauro. Tadeo Czerweny S.a.; ArgentinaFil: Rossetti, Marcelo. Tadeo Czerweny S.a.; ArgentinaPergamon-Elsevier Science Ltd2017-02info: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/11336/38289Rios Rodriguez, Gustavo Adolfo; Garelli, Luciano; Storti, Mario Alberto; Granata, Daniel; Amadei, Mauro; et al.; Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 112; 2-2017; 1271-12801359-4311CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1359431116315290info:eu-repo/semantics/altIdentifier/doi/10.1016/j.applthermaleng.2016.08.171info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:26Zoai:ri.conicet.gov.ar:11336/38289instacron: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:34982025-09-29 10:26:26.352CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
title Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
spellingShingle Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
Rios Rodriguez, Gustavo Adolfo
COMPUTATIONAL FLUID DYNAMICS
EXPERIMENTAL MEASUREMENTS
HEAT DISSIPATION
ONAN
POWER TRANSFORMER
title_short Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
title_full Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
title_fullStr Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
title_full_unstemmed Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
title_sort Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode
dc.creator.none.fl_str_mv Rios Rodriguez, Gustavo Adolfo
Garelli, Luciano
Storti, Mario Alberto
Granata, Daniel
Amadei, Mauro
Rossetti, Marcelo
author Rios Rodriguez, Gustavo Adolfo
author_facet Rios Rodriguez, Gustavo Adolfo
Garelli, Luciano
Storti, Mario Alberto
Granata, Daniel
Amadei, Mauro
Rossetti, Marcelo
author_role author
author2 Garelli, Luciano
Storti, Mario Alberto
Granata, Daniel
Amadei, Mauro
Rossetti, Marcelo
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv COMPUTATIONAL FLUID DYNAMICS
EXPERIMENTAL MEASUREMENTS
HEAT DISSIPATION
ONAN
POWER TRANSFORMER
topic COMPUTATIONAL FLUID DYNAMICS
EXPERIMENTAL MEASUREMENTS
HEAT DISSIPATION
ONAN
POWER TRANSFORMER
dc.description.none.fl_txt_mv This paper presents semi-analytical calculations, computational fluid dynamic simulations and experimental measurements accomplished on a typical 30 MVA power transformer. An ad hoc workbench was devised to carry out the experimental measurements. This facility allowed to estimate the values of different key variables involved in heat dissipation within the radiator, like convective heat transfer coefficients, oil-flow rate, air-flow speed between radiator fins and overall dissipated heat, among others. The main objectives of the study are to analyze the cooling capacity of the current radiator design working in ONAN mode and to validate the numerical simulation and calculation procedures for further design optimizations. The coupled thermo-hydraulic numerical simulations were performed on a computer cluster due to the high computational cost of the resulting models. The results of the simulations show good agreement with the experimentally measured values and with those obtained with the semi-analytical model, thus confirming that this model together with the CFD simulations are an accurate analysis tool. The heat transfer coefficients in the oil, the radiator panel and the air are computed. It is found that convective heat transfer from the panel to the air is approximately 10 times lower than heat transfer in the oil. Possible improvements on the current radiator design are briefly mentioned.
Fil: Rios Rodriguez, Gustavo Adolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Garelli, Luciano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Storti, Mario Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones en Métodos Computacionales. Universidad Nacional del Litoral. Centro de Investigaciones en Métodos Computacionales; Argentina
Fil: Granata, Daniel. Tadeo Czerweny S.a.; Argentina
Fil: Amadei, Mauro. Tadeo Czerweny S.a.; Argentina
Fil: Rossetti, Marcelo. Tadeo Czerweny S.a.; Argentina
description This paper presents semi-analytical calculations, computational fluid dynamic simulations and experimental measurements accomplished on a typical 30 MVA power transformer. An ad hoc workbench was devised to carry out the experimental measurements. This facility allowed to estimate the values of different key variables involved in heat dissipation within the radiator, like convective heat transfer coefficients, oil-flow rate, air-flow speed between radiator fins and overall dissipated heat, among others. The main objectives of the study are to analyze the cooling capacity of the current radiator design working in ONAN mode and to validate the numerical simulation and calculation procedures for further design optimizations. The coupled thermo-hydraulic numerical simulations were performed on a computer cluster due to the high computational cost of the resulting models. The results of the simulations show good agreement with the experimentally measured values and with those obtained with the semi-analytical model, thus confirming that this model together with the CFD simulations are an accurate analysis tool. The heat transfer coefficients in the oil, the radiator panel and the air are computed. It is found that convective heat transfer from the panel to the air is approximately 10 times lower than heat transfer in the oil. Possible improvements on the current radiator design are briefly mentioned.
publishDate 2017
dc.date.none.fl_str_mv 2017-02
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/11336/38289
Rios Rodriguez, Gustavo Adolfo; Garelli, Luciano; Storti, Mario Alberto; Granata, Daniel; Amadei, Mauro; et al.; Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 112; 2-2017; 1271-1280
1359-4311
CONICET Digital
CONICET
url http://hdl.handle.net/11336/38289
identifier_str_mv Rios Rodriguez, Gustavo Adolfo; Garelli, Luciano; Storti, Mario Alberto; Granata, Daniel; Amadei, Mauro; et al.; Numerical and experimental thermo-fluid dynamic analysis of a power transformer working in ONAN mode; Pergamon-Elsevier Science Ltd; Applied Thermal Engineering; 112; 2-2017; 1271-1280
1359-4311
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1359431116315290
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.applthermaleng.2016.08.171
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 Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
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
_version_ 1844614266033799168
score 13.070432

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