Comparative study between heat pipe and shell-and-tube thermal energy storage

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dc.contributor.authorMaldonado, José Miguel
dc.contributor.authorVérez, David
dc.contributor.authorGracia Cuesta, Alvaro de
dc.contributor.authorCabeza, Luisa F.
dc.date.accessioned2021-04-27T11:21:50Z
dc.date.issued2021
dc.date.updated2021-04-27T11:21:50Z
dc.description.abstractThis paper experimentally evaluates the implementation of heat pipes in latent heat thermal energy storage systems. The well-known performance of heat pipes as a heat transfer technology makes them great candidates to be used as heat exchangers. However, previous studies compared their efficacy against solid metal rods, where heat pipes clearly succeeded. Therefore, the objective of this study is to experimentally evaluate the advantages of using heat pipes instead of a common shell and tubes system, during charging processes. In particular, five latent heat thermal energy storage systems were tested. One based on the shell and tubes, and the remaining four based on heat pipes. The experiments were conducted at constant heat transfer fluid temperature and flow rate, and the results were analysed from the temperature, heat transfer, and visual point of view. The results show that in heat pipes systems the phase change material melts homogeneously through all the storage container. However, the shell and tubes tank performed the charging process in 25 min while the fastest heat pipe one took 40 min for it. On the other hand, in the shell and tubes configuration melt from the heat transfer fluid inlet towards the outlet. Moreover, systems with more heat pipe surface inside the heat transfer fluid collector rovided higher power rates. Comparing the best and the worst heat pipe storage tanks during the first 30 min, the heat transfer rate increased over 40%. But the storing material low conductivity cushioned those high heat transfer rates.
dc.description.sponsorshipThis work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España (RTI2018-093849-B-C31 - MCIU/AEI/FEDER, UE) and by the Agencia Estatal de Investigación (AEI), of the Ministerio de Ciencia, Innovación y Universidades (RED2018-102431-T). José Miguel Maldonado would like to thank the Spanish Government for his research fellowship (BES-2016-076554). The authors would like to thank the Catalan Government for the quality accreditation given to their research group (2017 SGR 1537). GREiA is a certified TECNIO agent in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme.
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.applthermaleng.2021.116974
dc.identifier.idgrec031244
dc.identifier.issn1359-4311
dc.identifier.urihttp://hdl.handle.net/10459.1/71166
dc.language.isoeng
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-093849-B-C31/ES/METODOLOGIA PARA EL ANALISIS DE TECNOLOGIAS DE ALMACENAMIENTO DE ENERGIA TERMICA HACIA UNA ECONOMIA CIRCULAR/
dc.relationinfo:eu-repo/grantAgreement/MICIU//RED2018-102431-T/ES/RED ESPAÑOLA EN ALMACENAMIENTO DE ENERGIA TERMICA/
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1016/j.applthermaleng.2021.116974
dc.relation.ispartofApplied Thermal Engineering, 2021, vol. 192, p. 116974-1-116974-11
dc.rightscc-by (c) Maldonado et al., 2021
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectLatent heat thermal energy storage (LHTES)
dc.subjectPhase change material (PCM)
dc.subjectHeat pipes
dc.subjectHeat exchanger
dc.subjectExperimental analysis
dc.titleComparative study between heat pipe and shell-and-tube thermal energy storage
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
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