Flow generated by a thermal plume in a cooled-ceiling system

Autores
Thomas, Luis Pablo; Marino, Beatriz Maria; Tovarb, Ramón; Castillo, José A.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The transient and steady states of the flow generated by a heat source inside a closed room provided with a cooled-ceiling system at constant temperature are experimentally studied. During the transient regime the plume generated by the source interacts with the ambient fluid and, after it reaches the top contour, spreads under the latter giving place to the formation of a horizontal thermal front that eventually descends affecting the whole room. It is found that the formation and velocity of the descending front are determined by the filling-box model in an insulated space but with a smaller temperature difference between both sides of the front. The steady state is established when the heat supplied by the source is completely absorbed by the ceiling allowing a convective process to take place characterized by a turbulent flow in the major part of the room and by a thermal boundary layer developed below the ceiling, where vortexes and little plumes form, the detection of which is allowed by the application of synthetic schlieren technique. Analogies with the results obtained in the classical Rayleigh-Benard experiments allow an insight of the mechanisms of heat transfer in order to improve the indoor comfort in buildings under similar conditions to those discussed here.
Fil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina
Fil: Tovarb, Ramón. Universidad Nacional Autónoma de México; México
Fil: Castillo, José A.. Universidad Nacional Autónoma de México; México
Materia
COOLED CEILING
INDOOR COMFORT
THERMAL PLUMES
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/95708
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Flow generated by a thermal plume in a cooled-ceiling systemThomas, Luis PabloMarino, Beatriz MariaTovarb, RamónCastillo, José A.COOLED CEILINGINDOOR COMFORTTHERMAL PLUMEShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The transient and steady states of the flow generated by a heat source inside a closed room provided with a cooled-ceiling system at constant temperature are experimentally studied. During the transient regime the plume generated by the source interacts with the ambient fluid and, after it reaches the top contour, spreads under the latter giving place to the formation of a horizontal thermal front that eventually descends affecting the whole room. It is found that the formation and velocity of the descending front are determined by the filling-box model in an insulated space but with a smaller temperature difference between both sides of the front. The steady state is established when the heat supplied by the source is completely absorbed by the ceiling allowing a convective process to take place characterized by a turbulent flow in the major part of the room and by a thermal boundary layer developed below the ceiling, where vortexes and little plumes form, the detection of which is allowed by the application of synthetic schlieren technique. Analogies with the results obtained in the classical Rayleigh-Benard experiments allow an insight of the mechanisms of heat transfer in order to improve the indoor comfort in buildings under similar conditions to those discussed here.Fil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; ArgentinaFil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; ArgentinaFil: Tovarb, Ramón. Universidad Nacional Autónoma de México; MéxicoFil: Castillo, José A.. Universidad Nacional Autónoma de México; MéxicoElsevier Science Sa2011-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/95708Thomas, Luis Pablo; Marino, Beatriz Maria; Tovarb, Ramón; Castillo, José A.; Flow generated by a thermal plume in a cooled-ceiling system; Elsevier Science Sa; Energy and Buildings; 43; 10; 10-2011; 2727-27360378-7788CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0378778811002829info:eu-repo/semantics/altIdentifier/doi/10.1016/j.enbuild.2011.06.033info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:43:47Zoai:ri.conicet.gov.ar:11336/95708instacron: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 09:43:47.71CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Flow generated by a thermal plume in a cooled-ceiling system
title Flow generated by a thermal plume in a cooled-ceiling system
spellingShingle Flow generated by a thermal plume in a cooled-ceiling system
Thomas, Luis Pablo
COOLED CEILING
INDOOR COMFORT
THERMAL PLUMES
title_short Flow generated by a thermal plume in a cooled-ceiling system
title_full Flow generated by a thermal plume in a cooled-ceiling system
title_fullStr Flow generated by a thermal plume in a cooled-ceiling system
title_full_unstemmed Flow generated by a thermal plume in a cooled-ceiling system
title_sort Flow generated by a thermal plume in a cooled-ceiling system
dc.creator.none.fl_str_mv Thomas, Luis Pablo
Marino, Beatriz Maria
Tovarb, Ramón
Castillo, José A.
author Thomas, Luis Pablo
author_facet Thomas, Luis Pablo
Marino, Beatriz Maria
Tovarb, Ramón
Castillo, José A.
author_role author
author2 Marino, Beatriz Maria
Tovarb, Ramón
Castillo, José A.
author2_role author
author
author
dc.subject.none.fl_str_mv COOLED CEILING
INDOOR COMFORT
THERMAL PLUMES
topic COOLED CEILING
INDOOR COMFORT
THERMAL PLUMES
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The transient and steady states of the flow generated by a heat source inside a closed room provided with a cooled-ceiling system at constant temperature are experimentally studied. During the transient regime the plume generated by the source interacts with the ambient fluid and, after it reaches the top contour, spreads under the latter giving place to the formation of a horizontal thermal front that eventually descends affecting the whole room. It is found that the formation and velocity of the descending front are determined by the filling-box model in an insulated space but with a smaller temperature difference between both sides of the front. The steady state is established when the heat supplied by the source is completely absorbed by the ceiling allowing a convective process to take place characterized by a turbulent flow in the major part of the room and by a thermal boundary layer developed below the ceiling, where vortexes and little plumes form, the detection of which is allowed by the application of synthetic schlieren technique. Analogies with the results obtained in the classical Rayleigh-Benard experiments allow an insight of the mechanisms of heat transfer in order to improve the indoor comfort in buildings under similar conditions to those discussed here.
Fil: Thomas, Luis Pablo. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina
Fil: Marino, Beatriz Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina
Fil: Tovarb, Ramón. Universidad Nacional Autónoma de México; México
Fil: Castillo, José A.. Universidad Nacional Autónoma de México; México
description The transient and steady states of the flow generated by a heat source inside a closed room provided with a cooled-ceiling system at constant temperature are experimentally studied. During the transient regime the plume generated by the source interacts with the ambient fluid and, after it reaches the top contour, spreads under the latter giving place to the formation of a horizontal thermal front that eventually descends affecting the whole room. It is found that the formation and velocity of the descending front are determined by the filling-box model in an insulated space but with a smaller temperature difference between both sides of the front. The steady state is established when the heat supplied by the source is completely absorbed by the ceiling allowing a convective process to take place characterized by a turbulent flow in the major part of the room and by a thermal boundary layer developed below the ceiling, where vortexes and little plumes form, the detection of which is allowed by the application of synthetic schlieren technique. Analogies with the results obtained in the classical Rayleigh-Benard experiments allow an insight of the mechanisms of heat transfer in order to improve the indoor comfort in buildings under similar conditions to those discussed here.
publishDate 2011
dc.date.none.fl_str_mv 2011-10
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/11336/95708
Thomas, Luis Pablo; Marino, Beatriz Maria; Tovarb, Ramón; Castillo, José A.; Flow generated by a thermal plume in a cooled-ceiling system; Elsevier Science Sa; Energy and Buildings; 43; 10; 10-2011; 2727-2736
0378-7788
CONICET Digital
CONICET
url http://hdl.handle.net/11336/95708
identifier_str_mv Thomas, Luis Pablo; Marino, Beatriz Maria; Tovarb, Ramón; Castillo, José A.; Flow generated by a thermal plume in a cooled-ceiling system; Elsevier Science Sa; Energy and Buildings; 43; 10; 10-2011; 2727-2736
0378-7788
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/S0378778811002829
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.enbuild.2011.06.033
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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 13.070432

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