Experimental evaluation of green nanofluids in heat exchanger made oF PDMS

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversity of Minho-
Autor(es): dc.contributorInstituto Politécnico de Bragança-
Autor(es): dc.contributorUniversidade de Lisboa-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorInstituto Universitário Militar-
Autor(es): dc.contributorFaculdade de Engenharia da Universidade do Porto (FEUP)-
Autor(es): dc.contributorUniversity of Porto-
Autor(es): dc.creatorNobrega, Glauco-
Autor(es): dc.creatorSouza, Reinaldo-
Autor(es): dc.creatorCardoso, Beatriz-
Autor(es): dc.creatorAfonso, Inês-
Autor(es): dc.creatorPereira, José-
Autor(es): dc.creatorCardoso, Elaine-
Autor(es): dc.creatorMoita, Ana-
Autor(es): dc.creatorRibeiro, João-
Autor(es): dc.creatorLima, Rui-
Data de aceite: dc.date.accessioned2025-08-21T23:25:59Z-
Data de disponibilização: dc.date.available2025-08-21T23:25:59Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.tsep.2024.102978-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/300452-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/300452-
Descrição: dc.descriptionConventional methods for synthesizing metallic nanoparticles face challenges such as instability and environmental concerns. Therefore, new, simpler, and more eco-friendly methods are being explored. In this context, the study reports a green synthesis process to produce magnetic iron oxide nanoparticles using an aqueous extract of the alga Chlorella vulgaris. This process leverages natural resources to create a sustainable nanofluid known as green nanofluid. To evaluate the characteristics of this nanofluid, experimental measurements of wettability, viscosity, thermal conductivity, and qualitative stability analysis were conducted. An experimental setup consisting of a heat exchanger made of polydimethylsiloxane (PDMS) was used to assess the thermal performance and the results were compared to theoretical equations and numerical simulation. Additionally, thermographic imaging of temperature gradients as the fluids passed over the heated surface of the serpentine channel were made. The main findings confirmed that the nanofluid was more stable than that obtained by traditional methods and had a more uniform temperature distribution over the heat exchanger. The higher concentration exhibited superior thermal performance compared to DI-Water. Moreover, the green nanofluid was used at a weight concentration of 0.1 wt%, provided thermal performance results of nearly 4.5% superior to those estimated by the numerical model and 6.4% higher than those experimentally obtained with the base fluid, respectively. Finally, the results obtained for the nanofluid also showed an average increase of around 5% in the viscosity of the base fluid, with a more significant sedimentation at a concentration of 0.1 wt%.-
Descrição: dc.descriptionMinistério da Ciência, Tecnologia e Ensino Superior-
Descrição: dc.descriptionMIT Portugal-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia-
Descrição: dc.descriptionPsychiatry Research Trust-
Descrição: dc.descriptionScope Australia-
Descrição: dc.descriptionMechanical Engineering and Resource Sustainability Center (MEtRICs) Mechanical Engineering Department University of Minho, Campus de Azurém-
Descrição: dc.descriptionCentro de Investigação de Montanha (CIMO) Campus de Santa Apolónia Instituto Politécnico de Bragança-
Descrição: dc.descriptionIN+ Center for Innovation Technology and Policy Research Instituto Superior Tecnico Universidade de Lisboa, Av. Rovisco Pais-
Descrição: dc.descriptionUNESP - São Paulo State University School of Engineering, SP-
Descrição: dc.descriptionUNESP - São Paulo State University School of Engineering, São João da Boa Vista-
Descrição: dc.descriptionCINAMIL—Centro de Investigação Desenvolvimento e Inovação da Academia Militar Academia Militar Instituto Universitário Militar, Rua Gomes Freire-
Descrição: dc.descriptionTransport Phenomena Research Center (CEFT) Faculdade de Engenharia da Universidade do Porto (FEUP), Rua Roberto Frias-
Descrição: dc.descriptionAssociate Laboratory in Chemical Engineering (ALiCE) Faculty of Engineering University of Porto-
Descrição: dc.descriptionUNESP - São Paulo State University School of Engineering, SP-
Descrição: dc.descriptionUNESP - São Paulo State University School of Engineering, São João da Boa Vista-
Descrição: dc.descriptionFundação para a Ciência e a Tecnologia: 1249–074-
Descrição: dc.descriptionPsychiatry Research Trust: BD/153088/2021-
Descrição: dc.descriptionScope Australia: LA/P/0045/2020-
Descrição: dc.descriptionScope Australia: UIDB/00532/2020-
Descrição: dc.descriptionScope Australia: UIDB/04077/2020-
Descrição: dc.descriptionScope Australia: UIDP/04077/2020-
Idioma: dc.languageen-
Relação: dc.relationThermal Science and Engineering Progress-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectGreen nanofluids-
Palavras-chave: dc.subjectPDMS exchanger-
Palavras-chave: dc.subjectStability-
Palavras-chave: dc.subjectThermal conductivity-
Título: dc.titleExperimental evaluation of green nanofluids in heat exchanger made oF PDMS-
Tipo de arquivo: dc.typelivro digital-
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