Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid

Detalhes bibliográficos
Autor(a) principal: Manetti, Leonardo Lachi [UNESP]
Data de Publicação: 2017
Outros Autores: Stephen, Mogaji Taye [UNESP], Beck, Paulo Arthur, Cardoso, Elaine Maria [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.expthermflusci.2017.04.018
http://hdl.handle.net/11449/169647
Resumo: This study presents experimental results for the heat transfer coefficient during pool boiling of DI water and Al2O3-water based nanofluid at saturation conditions. Based on these data, an analysis of the heat transfer enhancement due to the nanofluids was performed. The experiments were performed for Al2O3-water based nanofluid with different volume concentrations (0.0007 vol.% and 0.007 vol.%, corresponding to low and high nanofluid concentration, respectively). A copper surface, with different roughness values (Ra = 0.05 μm, corresponding to a smooth surface, and Ra = 0.23 μm, corresponding to a rough surface), was used as test section. The nanoparticle average size was 10 nm and the applied heat flux ranged from 100 to 800 kW/m2. For nanofluid pool boiling, it was observed an increase in the heat transfer coefficient up to 75 %, and 15% for the smooth and rough surfaces, respectively, in comparison to that of DI water. According to results, the surface roughness is strongly affected by nanofluid concentration due to the nanoparticle deposition on the heating surface. The results indicate that the use of nanofluids is effective on pool boiling heat transfer, for moderate heat flux and low volumetric concentration.
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spelling Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluidheat transfer coefficient (HTC)NanofluidsNucleate boilingThis study presents experimental results for the heat transfer coefficient during pool boiling of DI water and Al2O3-water based nanofluid at saturation conditions. Based on these data, an analysis of the heat transfer enhancement due to the nanofluids was performed. The experiments were performed for Al2O3-water based nanofluid with different volume concentrations (0.0007 vol.% and 0.007 vol.%, corresponding to low and high nanofluid concentration, respectively). A copper surface, with different roughness values (Ra = 0.05 μm, corresponding to a smooth surface, and Ra = 0.23 μm, corresponding to a rough surface), was used as test section. The nanoparticle average size was 10 nm and the applied heat flux ranged from 100 to 800 kW/m2. For nanofluid pool boiling, it was observed an increase in the heat transfer coefficient up to 75 %, and 15% for the smooth and rough surfaces, respectively, in comparison to that of DI water. According to results, the surface roughness is strongly affected by nanofluid concentration due to the nanoparticle deposition on the heating surface. The results indicate that the use of nanofluids is effective on pool boiling heat transfer, for moderate heat flux and low volumetric concentration.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP – Univ Estadual Paulista Department of Mechanical Engineering, Av. Brasil Centro 56FUTA – Federal University of Technology Akure Department of Mechanical Engineering School of Engineering and Engineering Technology, PMB 704TUM – Technical University of Munich Department of Mechanical Engineering Chair of Turbomachinery and Flight PropulsionUNESP – Univ Estadual Paulista Department of Mechanical Engineering, Av. Brasil Centro 56FAPESP: 2013/15431-7FAPESP: 2014/19497-5Universidade Estadual Paulista (Unesp)School of Engineering and Engineering TechnologyChair of Turbomachinery and Flight PropulsionManetti, Leonardo Lachi [UNESP]Stephen, Mogaji Taye [UNESP]Beck, Paulo ArthurCardoso, Elaine Maria [UNESP]2018-12-11T16:47:00Z2018-12-11T16:47:00Z2017-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article191-200application/pdfhttp://dx.doi.org/10.1016/j.expthermflusci.2017.04.018Experimental Thermal and Fluid Science, v. 87, p. 191-200.0894-1777http://hdl.handle.net/11449/16964710.1016/j.expthermflusci.2017.04.0182-s2.0-8501830820521157711517980960000-0002-3676-143XScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengExperimental Thermal and Fluid Science1,271info:eu-repo/semantics/openAccess2023-11-30T06:17:52Zoai:repositorio.unesp.br:11449/169647Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:09:39.171530Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
title Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
spellingShingle Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
Manetti, Leonardo Lachi [UNESP]
heat transfer coefficient (HTC)
Nanofluids
Nucleate boiling
title_short Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
title_full Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
title_fullStr Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
title_full_unstemmed Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
title_sort Evaluation of the heat transfer enhancement during pool boiling using low concentrations of Al2O3-water based nanofluid
author Manetti, Leonardo Lachi [UNESP]
author_facet Manetti, Leonardo Lachi [UNESP]
Stephen, Mogaji Taye [UNESP]
Beck, Paulo Arthur
Cardoso, Elaine Maria [UNESP]
author_role author
author2 Stephen, Mogaji Taye [UNESP]
Beck, Paulo Arthur
Cardoso, Elaine Maria [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
School of Engineering and Engineering Technology
Chair of Turbomachinery and Flight Propulsion
dc.contributor.author.fl_str_mv Manetti, Leonardo Lachi [UNESP]
Stephen, Mogaji Taye [UNESP]
Beck, Paulo Arthur
Cardoso, Elaine Maria [UNESP]
dc.subject.por.fl_str_mv heat transfer coefficient (HTC)
Nanofluids
Nucleate boiling
topic heat transfer coefficient (HTC)
Nanofluids
Nucleate boiling
description This study presents experimental results for the heat transfer coefficient during pool boiling of DI water and Al2O3-water based nanofluid at saturation conditions. Based on these data, an analysis of the heat transfer enhancement due to the nanofluids was performed. The experiments were performed for Al2O3-water based nanofluid with different volume concentrations (0.0007 vol.% and 0.007 vol.%, corresponding to low and high nanofluid concentration, respectively). A copper surface, with different roughness values (Ra = 0.05 μm, corresponding to a smooth surface, and Ra = 0.23 μm, corresponding to a rough surface), was used as test section. The nanoparticle average size was 10 nm and the applied heat flux ranged from 100 to 800 kW/m2. For nanofluid pool boiling, it was observed an increase in the heat transfer coefficient up to 75 %, and 15% for the smooth and rough surfaces, respectively, in comparison to that of DI water. According to results, the surface roughness is strongly affected by nanofluid concentration due to the nanoparticle deposition on the heating surface. The results indicate that the use of nanofluids is effective on pool boiling heat transfer, for moderate heat flux and low volumetric concentration.
publishDate 2017
dc.date.none.fl_str_mv 2017-01-01
2018-12-11T16:47:00Z
2018-12-11T16:47:00Z
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.2017.04.018
Experimental Thermal and Fluid Science, v. 87, p. 191-200.
0894-1777
http://hdl.handle.net/11449/169647
10.1016/j.expthermflusci.2017.04.018
2-s2.0-85018308205
2115771151798096
0000-0002-3676-143X
url http://dx.doi.org/10.1016/j.expthermflusci.2017.04.018
http://hdl.handle.net/11449/169647
identifier_str_mv Experimental Thermal and Fluid Science, v. 87, p. 191-200.
0894-1777
10.1016/j.expthermflusci.2017.04.018
2-s2.0-85018308205
2115771151798096
0000-0002-3676-143X
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Experimental Thermal and Fluid Science
1,271
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 191-200
application/pdf
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
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