Pool boiling heat transfer of HFE-7100 on metal foams
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 UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.expthermflusci.2019.110025 http://hdl.handle.net/11449/199904 |
Resumo: | The search for new techniques to increase boiling heat transfer has been driven by more efficient and compact heat exchangers, especially in microelectronics and equipment with high thermal loads. Two-phase cooling systems are a promising thermal management technology for high-heat dissipation. In this context, the present study investigated the performance of modified heating surfaces consisting of metal foams of nickel (Ni) and copper (Cu). Pool boiling tests were performed using HFE-7100 as working fluid, at saturation conditions. The metal foams surfaces provided a higher heat transfer coefficient compared to plain surfaces and prevented thermal overshoot at the onset nucleate boiling. The Cu foam provided the best performance for the entire boiling curve. In general, for low and moderated heat fluxes, there is a combined effect of surface area and thermal conductivity of foams; the high surface area of Ni foam provides a barrier for the departure of the vapor bubble, inhibiting the cooling effect of the heating surface. For the Cu foam, no significant vapor trapped effect was observed, and the highest heat transfer coefficient was 12.4 kW/m2∙K for a heat flux around 270 kW/m2; in addition, the thermal behavior is a function of the permeability and wickability behaviors of the surfaces. |
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Pool boiling heat transfer of HFE-7100 on metal foamsThe search for new techniques to increase boiling heat transfer has been driven by more efficient and compact heat exchangers, especially in microelectronics and equipment with high thermal loads. Two-phase cooling systems are a promising thermal management technology for high-heat dissipation. In this context, the present study investigated the performance of modified heating surfaces consisting of metal foams of nickel (Ni) and copper (Cu). Pool boiling tests were performed using HFE-7100 as working fluid, at saturation conditions. The metal foams surfaces provided a higher heat transfer coefficient compared to plain surfaces and prevented thermal overshoot at the onset nucleate boiling. The Cu foam provided the best performance for the entire boiling curve. In general, for low and moderated heat fluxes, there is a combined effect of surface area and thermal conductivity of foams; the high surface area of Ni foam provides a barrier for the departure of the vapor bubble, inhibiting the cooling effect of the heating surface. For the Cu foam, no significant vapor trapped effect was observed, and the highest heat transfer coefficient was 12.4 kW/m2∙K for a heat flux around 270 kW/m2; in addition, the thermal behavior is a function of the permeability and wickability behaviors of the surfaces.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Estadual PaulistaFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNESP – São Paulo State University School of Engineering Post-Graduation Program in Mechanical Engineering, Av. Brasil, 56, 15385-000Heat Transfer Research Group Department of Mechanical Engineering Escola de Engenharia de São Carlos (EESC) University of São Paulo (USP)UNESP – São Paulo State University School of Engineering Post-Graduation Program in Mechanical Engineering, Av. Brasil, 56, 15385-000FAPESP: /EESC-USPFAPESP: 2013/15431-7FAPESP: 2017/13813-0FAPESP: 2019/02566-8CNPq: 458702/2014-5Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Manetti, Leonardo Lachi [UNESP]Ribatski, Gherhardtde Souza, Reinaldo Rodrigues [UNESP]Cardoso, Elaine Maria [UNESP]2020-12-12T01:52:28Z2020-12-12T01:52:28Z2020-05-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.expthermflusci.2019.110025Experimental Thermal and Fluid Science, v. 113.0894-1777http://hdl.handle.net/11449/19990410.1016/j.expthermflusci.2019.1100252-s2.0-85077464275Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengExperimental Thermal and Fluid Scienceinfo:eu-repo/semantics/openAccess2024-07-04T20:06:00Zoai:repositorio.unesp.br:11449/199904Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:31:39.516333Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Pool boiling heat transfer of HFE-7100 on metal foams |
title |
Pool boiling heat transfer of HFE-7100 on metal foams |
spellingShingle |
Pool boiling heat transfer of HFE-7100 on metal foams Manetti, Leonardo Lachi [UNESP] |
title_short |
Pool boiling heat transfer of HFE-7100 on metal foams |
title_full |
Pool boiling heat transfer of HFE-7100 on metal foams |
title_fullStr |
Pool boiling heat transfer of HFE-7100 on metal foams |
title_full_unstemmed |
Pool boiling heat transfer of HFE-7100 on metal foams |
title_sort |
Pool boiling heat transfer of HFE-7100 on metal foams |
author |
Manetti, Leonardo Lachi [UNESP] |
author_facet |
Manetti, Leonardo Lachi [UNESP] Ribatski, Gherhardt de Souza, Reinaldo Rodrigues [UNESP] Cardoso, Elaine Maria [UNESP] |
author_role |
author |
author2 |
Ribatski, Gherhardt de Souza, Reinaldo Rodrigues [UNESP] Cardoso, Elaine Maria [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Manetti, Leonardo Lachi [UNESP] Ribatski, Gherhardt de Souza, Reinaldo Rodrigues [UNESP] Cardoso, Elaine Maria [UNESP] |
description |
The search for new techniques to increase boiling heat transfer has been driven by more efficient and compact heat exchangers, especially in microelectronics and equipment with high thermal loads. Two-phase cooling systems are a promising thermal management technology for high-heat dissipation. In this context, the present study investigated the performance of modified heating surfaces consisting of metal foams of nickel (Ni) and copper (Cu). Pool boiling tests were performed using HFE-7100 as working fluid, at saturation conditions. The metal foams surfaces provided a higher heat transfer coefficient compared to plain surfaces and prevented thermal overshoot at the onset nucleate boiling. The Cu foam provided the best performance for the entire boiling curve. In general, for low and moderated heat fluxes, there is a combined effect of surface area and thermal conductivity of foams; the high surface area of Ni foam provides a barrier for the departure of the vapor bubble, inhibiting the cooling effect of the heating surface. For the Cu foam, no significant vapor trapped effect was observed, and the highest heat transfer coefficient was 12.4 kW/m2∙K for a heat flux around 270 kW/m2; in addition, the thermal behavior is a function of the permeability and wickability behaviors of the surfaces. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:52:28Z 2020-12-12T01:52:28Z 2020-05-01 |
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.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.expthermflusci.2019.110025 Experimental Thermal and Fluid Science, v. 113. 0894-1777 http://hdl.handle.net/11449/199904 10.1016/j.expthermflusci.2019.110025 2-s2.0-85077464275 |
url |
http://dx.doi.org/10.1016/j.expthermflusci.2019.110025 http://hdl.handle.net/11449/199904 |
identifier_str_mv |
Experimental Thermal and Fluid Science, v. 113. 0894-1777 10.1016/j.expthermflusci.2019.110025 2-s2.0-85077464275 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Experimental Thermal and Fluid Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128373905424384 |