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Thermal performance evaluation of pure PDMS and PDMS composites heat exchangers

2025Journal article Open access
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datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg03:Saúde de Qualidade
dc.contributor.authorSouza, Reinaldo
dc.contributor.authorNobrega, Glauco
dc.contributor.authorAfonso, Inês Santos
dc.contributor.authorPereira, José
dc.contributor.authorCardoso, Elaine
dc.contributor.authorMarques, Filipe
dc.contributor.authorVilarinho, Cândida
dc.contributor.authorMoita, Ana
dc.contributor.authorLima, Rui A.
dc.date.accessioned2025-11-21T14:58:51Z
dc.date.available2025-11-21T14:58:51Z
dc.date.issued2025
dc.description.abstractThis study investigates the heat transfer performance of three types of heat exchangers: one made of pure polydimethylsiloxane (PDMS), another incorporating recycled graphite (PDMS + Graphite 30 mass%), and a third using commercial aluminium nanoparticles (PDMS + Aluminium 30 mass%). Thermal performance was evaluated by measuring the thermal conductivity of the materials, analysing experimental convection tests with deionized water in a single-phase regime and using a thermal camera to obtain temperature profiles of the different surfaces. The results revealed that the composites formed with PDMS matrix and recycled graphite showed elevated thermal conductivity, approximately 2.7 times higher than pure PDMS. The heat transfer coefficient performance was 2.5 times superior to that of the heat exchanger made with commercial aluminium nanoparticles and up to 5 times higher compared to pure PDMS. The thermal analysis highlighted the benefits of the composites, showing a more uniform temperature distribution both in the serpentine channel and along the sides of the PDMS. The study aimed to provide an economical alternative that also contributes to waste valorisation. These findings validate the effectiveness of recycled particles in improving heat transfer performance in heat exchangers made from a combination of PDMS matrix and recycled, economical materials.eng
dc.description.sponsorshipThe authors are grateful to the Fundação para a Ciência e a Tecnologia (FCT), Avenida D. Carlos I, 126, 1249–074 Lisboa, Portugal, for partially financing the Project “Estratégias interfaciais de arrefecimento para tecnologias de conversão com elevadas potências de dissipação”, Ref. PTDC/EMETED/7801/2020). José Pereira acknowledges FCT for his PhD Fellowship (Ref. 2021. 05830.BD). The authors are also grateful for FCT funding through 2022.03151.PTDC (https://doi.org/10.54499/2022.03151.PTDC), 2022.06207.PTDC (https://doi.org/10.54499/2022.06207.PTDC) and LA/P/0083/2020 IN +-IST-ID. The authors also acknowledge the partial financial support within the R&D Units Project Scope: UIDB/04077/2020, UIDP/04077/2020 (UID/4077: Mechanical Engineering and Resource Sustainability Center (MEtRICs)),. Glauco Nobrega was supported by the PRT/BD/153088/2021 doctoral grant fnanced by the Portuguese Foundation for Science and Technology (FCT), and with funds from MCTES/República Portuguesa, under the MIT Portugal Program. Inês S. Afonso was supported by the doctoral grant 2024.05919.BDANA, financed by FCT. A.S. Moita also acknowledges FCT for partially financing her contract through CEECINST/00043/2021/CP2797/CT0005, https://doi.org/10.54499/CEECINST/00043/2021/CP2797/CT0005 and for supporting Mr. Pedro Ponte's PhD fellowship (Ref. SFRH/BD/149286/2019). E.M. Cardoso is grateful for the financial support from Conselho Nacional de Desenvolvimento Científico e Tecnológico (grants number 458702/2014–5, 309848/2020–2 and 309848/2020-2) and Fundação de Amparo à Pesquisa do Estado de São Paulo (grants numbers 2013/15431–7, 2019/02566–8, 2023/03492-3, 2023/14537-8, 2022/03946–1 and 22/15765–1).
dc.identifier.citationSouza, Reinaldo; Nobrega, Glauco; Afonso, Ines S.; Pereira, Jose; Cardoso, Elaine; Marques, Filipe; Vilarinho, Candida; Moita, Ana; Lima, Rui A. (2025) Thermal performance evaluation of pure PDMS and PDMS composites heat exchangers. ISSN 1388-6150. 150:13, p. 10401-10412
dc.identifier.doi10.1007/s10973-025-14394-3
dc.identifier.issn1388-6150
dc.identifier.issn1588-2926
dc.identifier.urihttp://hdl.handle.net/10198/35127
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Science and Business Media LLC
dc.relationInterfacial COOLing Strategies for high POwer dissipation conversion Technologies
dc.relationRevestimentos superhidrofóbicos resistentes à ebulição em meio quiescente
dc.relationLARSyS - Laboratory of Robotics and Engineering Systems
dc.relationMechanical Engineering and Resource Sustainability Center
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/
dc.subjectPDMS heat exchanger
dc.subjectPolymeric matrix composites
dc.subjectWaste particle
dc.subjectThermal conductivity
dc.subjectHeat transfer
dc.titleThermal performance evaluation of pure PDMS and PDMS composites heat exchangerseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleInterfacial COOLing Strategies for high POwer dissipation conversion Technologies
oaire.awardTitleRevestimentos superhidrofóbicos resistentes à ebulição em meio quiescente
oaire.awardTitleLARSyS - Laboratory of Robotics and Engineering Systems
oaire.awardTitleMechanical Engineering and Resource Sustainability Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Concurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020/PTDC%2FEME-TED%2F7801%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//2021.05830.BD/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0083%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04077%2F2020/PT
oaire.citation.endPage10412
oaire.citation.issue13
oaire.citation.startPage10401
oaire.citation.titleJournal of Thermal Analysis and Calorimetry
oaire.citation.volume150
oaire.fundingStreamConcurso para Financiamento de Projetos de Investigação Científica e Desenvolvimento Tecnológico em Todos os Domínios Científicos - 2020
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameNobrega
person.familyNameAfonso
person.givenNameGlauco
person.givenNameInês Santos
person.identifier.ciencia-id2A1E-B6E3-D35E
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person.identifier.gsidhttps://scholar.google.com/citations?user=FgE3QF4AAAAJ&hl=pt-PT
person.identifier.orcid0000-0002-2571-0928
person.identifier.orcid0000-0001-6416-2867
person.identifier.scopus-author-id57266398500
person.identifier.scopus-author-idhttps://www.scopus.com/authid/detail.uri?authorId=57880904400
project.funder.identifierhttp://doi.org/10.13039/501100001871
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