Avaliação experimental do aumento da transferência de calor e de propriedades térmicas em trocadores de calor utilizando nanofluidos

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorBimbato, Alex Mendonça-
Autor(es): dc.contributorZevallos, Andrés Armando Mendiburu-
Autor(es): dc.contributorHuallpachoque, Roberto Carlos Chucuya-
Autor(es): dc.creatorSaldaña Bernuy, Luis Fernando Junior-
Data de aceite: dc.date.accessioned2025-08-21T16:18:06Z-
Data de disponibilização: dc.date.available2025-08-21T16:18:06Z-
Data de envio: dc.date.issued2024-01-28-
Data de envio: dc.date.issued2024-01-28-
Data de envio: dc.date.issued2023-11-21-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/253068-
Fonte completa do material: dc.identifierhttps://lattes.cnpq.br/4258064303851496-
Fonte completa do material: dc.identifierhttps://orcid.org/0000-0002-2192-4435-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/253068-
Descrição: dc.descriptionHeat exchangers are devices used to transfer thermal energy between fluids. Their application covers various industrial sectors, including heating, cooling and condensation, the latter being especially important in energy systems. This work aims to evaluate heat transfer in a shell-andtube heat exchanger operating with steam as the hot fluid and water as the cold fluid, which was then replaced by Al2O3 nanofluid. The results show that the heat transfer rate did not change significantly with the use of the nanofluid. However, it can be seen that the nanofluid plays a considerable role in increasing the convective coefficient and the overall average heat transfer coefficients. The thermal conductivity and concentration of the nanoparticles prove to be influential in this phenomenon. It is noteworthy that the most significant increases in the convective heat transfer coefficient are recorded when the steam flow rate is 0.01898 kg/s, showing an increase of 35.9%. In addition, there is also a 34.4% increase when the steam flow rate is increased to 0.02142 kg/s, a 33.1% increase at 0.02262 kg/s and a 32.7% increase when the flow rate reaches 0.02416 kg/s. For the same steam flow rates, the overall average heat transfer coefficients experience notable increases of 31.7%, 30.5%, 29.2% and 28.6%, respectively. It should be noted that the ideal concentration of nanoparticles was determined to be 1.25%, since this concentration provides the highest percentage increases in the variables that influence the heat exchanger's operating parameters.-
Descrição: dc.descriptionAgência Nacional do Petróleo, Gás Natural e Biocombustíveis (ANP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionANP: 044419-
Descrição: dc.descriptionCAPES: 001-
Formato: dc.formatapplication/pdf-
Idioma: dc.languagept_BR-
Publicador: dc.publisherUniversidade Estadual Paulista (UNESP)-
Direitos: dc.rightsinfo:eu-repo/semantics/openAccess-
Palavras-chave: dc.subjectTrocador de calor do tipo casco e tubos-
Palavras-chave: dc.subjectTransferência de calor-
Palavras-chave: dc.subjectCondensação-
Palavras-chave: dc.subjectNanofluidos-
Palavras-chave: dc.subjectNanopartículas de Al2O3-
Palavras-chave: dc.subjectPermutadores térmicos-
Palavras-chave: dc.subjectCalor - Transmissão-
Palavras-chave: dc.subjectNanofluídos-
Palavras-chave: dc.subjectShell and tube heat exchanger-
Palavras-chave: dc.subjectHeat transfer-
Palavras-chave: dc.subjectCondensation-
Palavras-chave: dc.subjectNanofluids-
Palavras-chave: dc.subjectAl2O3 nanoparticles-
Título: dc.titleAvaliação experimental do aumento da transferência de calor e de propriedades térmicas em trocadores de calor utilizando nanofluidos-
Título: dc.titleExperimental evaluation of heat transfer enhancement and thermal properties in heat exchangers using nanofluids-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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