Repository logo
 
Publication

A thermodynamic journey: unlocking cold thermal energy storage with phase equilibrium studies

2025-05-12Conference object Open access
Simple item page
datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.sdg07:Energias Renováveis e Acessíveis
dc.contributor.authorSequeira, Maria Carolina
dc.contributor.authorNikitin, Timur
dc.contributor.authorCaetano, Fernando J. P.
dc.contributor.authorDiogo, Herminio
dc.contributor.authorFareleira, João
dc.contributor.authorFausto, Rui
dc.date.accessioned2026-01-13T19:25:40Z
dc.date.available2026-01-13T19:25:40Z
dc.date.issued2025-05-12
dc.description.abstractAs the urgent demand for sustainable energy solutions increase, thermal energy storage (TES) systems have become crucial in improving energy efficiency and ensuring supply-demand balance1. In low-temperature sectors such as refrigeration, cold-chain logistics, and medical applications, phase change materials (PCM) are particularly valuable due to their high latent heat capacity and reversible phase transitions1,2. However, finding PCM that are not only efficient and reliable, but also environmentally safe, remains a challenge. Over the last few years, our research has focused on phase equilibrium studies of potential organic PCM, providing valuable experimental data and thermodynamic insights for designing low-temperature TES systems. This work began with the study of binary systems of di-n-alkyl adipates, specifically diethyl/dibutyl adipates, which revealed eutectic behaviour with a eutectic point at -33 ºC. Expanding on this, we investigated n-alkane systems, including n-octane/n-decane and n-decane/n-dodecane, both of which exhibited eutectic transitions at sub-zero temperatures. Recently, efforts focused on n-alkanes, namely n-nonane/n-decane and n-nonane/n-undecane, paying special attention to odd–even carbon chain effects on the phase diagrams. These studies uncovered new low-temperature PCM potential candidates and clarified phase change behaviours for this kind of systems. The latest work on adipates, particularly dimethyl and dipropyl, revealed a eutectic behaviour near -20 ºC, showing great suitability as low-temperature PCM. Those studies significantly expand the database of viable PCM, enhancing our understanding of low-temperature phase behaviour. This work brings together four years of contributions to the rapidly advancing field of sustainable low-temperature TES, offering both practical and theoretical insights.eng
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT) - UIDB/00313/2025. Fundação para a Ciência e a Tecnologia (FCT) - UIDP/00313/2025. Fundação para a Ciência e a Tecnologia (FCT) - IMS—LA/P/0056/2020UIDB/00100/2020. ERA-Chair Spectroscopy@IKU - (Project number: 101184899) European Research Agency, HORIZON-WIDERA-2023-TALENTS-01-01 Program
dc.identifier.citationM. C. M. Sequeira, T. Nikitin, F.J.P. Caetano, H.P. Diogo, J.M.N.A. Fareleira, R. Fausto, A Thermodynamic Journey: Unlocking Cold Thermal Energy Storage with Phase Equilibrium Studies, [Oral Communication] CQE Days 2025, Lisboa, 12-13 maio de 2025. (OC7). https://sites.google.com/view/cqedays2025/home
dc.identifier.urihttp://hdl.handle.net/10400.2/20804
dc.language.isoeng
dc.peerreviewedyes
dc.relationCentro de Química Estrutural
dc.relationEquilibrium and Transport Properties of Materials for Sustainable Low Temperature Energy Storage
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectsustainable energy
dc.subjectthermal energy storage (TES)
dc.subjectphase change materials (PCM)
dc.subjectn-alkane systems
dc.titleA thermodynamic journey: unlocking cold thermal energy storage with phase equilibrium studieseng
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardTitleEquilibrium and Transport Properties of Materials for Sustainable Low Temperature Energy Storage
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/UI%2FBD%2F152239%2F2021/PT
oaire.citation.conferenceDate2025
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamOE
oaire.versionhttp://purl.org/coar/version/c_b1a7d7d4d402bcce
person.familyNameSequeira
person.familyNameNikitin
person.familyNameCaetano
person.familyNameDiogo
person.familyNameFareleira
person.familyNameFausto
person.givenNameMaria Carolina
person.givenNameTimur
person.givenNameFernando J. P.
person.givenNameHerminio
person.givenNameJoão
person.givenNameRui
person.identifier.ciencia-idFF16-CEAC-461C
person.identifier.ciencia-idDE17-708E-317F
person.identifier.ciencia-id6613-74F0-0CC2
person.identifier.ciencia-id8E1B-F54C-8ABD
person.identifier.orcid0000-0002-9746-2281
person.identifier.orcid0000-0002-0907-5936
person.identifier.orcid0000-0002-6821-1694
person.identifier.orcid0000-0002-0808-1306
person.identifier.orcid0000-0002-8442-9386
person.identifier.orcid0000-0002-8264-6854
person.identifier.ridH-8246-2012
person.identifier.ridH-8325-2012
person.identifier.scopus-author-id57209026585
person.identifier.scopus-author-id7004474824
person.identifier.scopus-author-id6603795027
person.identifier.scopus-author-id6603840268
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication659a41ab-b9f0-4e51-a4ea-2558038f6148
relation.isAuthorOfPublication0d3163ca-089c-4e80-b1a5-b7abc85993ae
relation.isAuthorOfPublicationf36ab422-62f8-4432-965c-73e36b0d25a2
relation.isAuthorOfPublication6d1bd9da-63dc-45fb-8eab-a821c4494493
relation.isAuthorOfPublication22e737b9-e5ab-460d-9200-5d088c622c08
relation.isAuthorOfPublication88545552-aeea-46af-ad41-1c30b56bc0a1
relation.isAuthorOfPublication.latestForDiscovery659a41ab-b9f0-4e51-a4ea-2558038f6148
relation.isProjectOfPublication827740fc-9d32-4c94-83b4-4d6d5c2c523c
relation.isProjectOfPublication991efc62-c38d-49b5-a606-a2e34fea8dff
relation.isProjectOfPublication.latestForDiscovery827740fc-9d32-4c94-83b4-4d6d5c2c523c

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
CQE Days Sequeira_MariaCarolinaM.pdf
Size:
1.71 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.97 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Ambiente e Sustentabilidade | Comunicações em congressos, conferências e seminários / Communications in congresses, conferences and seminars