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Experimental determination of the convection heat transfer coefficient in an eccentric annular duct

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Ingeniería de Sistemas Energéticoses
dc.contributor.authorSerrano García, Daniel
dc.contributor.authorSánchez Delgado, Sergio
dc.contributor.authorPérez Álvarez, Rafael
dc.contributor.authorAcosta Iborra, Antonio
dc.contributor.funderMinisterio de Ciencia e Innovación (España)es
dc.contributor.funderAgencia Estatal de Investigación (España)es
dc.date.accessioned2023-09-29T10:43:30Z
dc.date.available2023-09-29T10:43:30Z
dc.date.issued2022-08-01
dc.description.abstractThe use of bayonet tube heat exchangers and heaters is widespread in many industrial applications and an improvement in the heat transfer coefficient may provide benefits over other technologies. This work presents novel experimental results about the turbulent convection heat transfer coefficient of air in the annular section of a bayonet tube for two different configurations: concentric and eccentric tubes. For both configurations, the convection heat transfer coefficient was obtained at different air flow rates, therefore, at different Reynolds numbers. In the case of the eccentric configuration, the angular position of the inner tube was varied to determine the circumferential distribution of the local convective heat transfer coefficient. An increase of the convection coefficient was observed for both configurations at higher Reynolds numbers. Concerning the angular position with regard the inner tube, the largest local convective heat transfer coefficient was obtained at the angular position where the distance between the inner and outer tubes was maximum, yielding a value 22.3% higher than in the case of a concentric annular section. All these experimental results were used to propose a new correlation for the local convective heat transfer coefficient as a function of the Prandtl and Reynolds numbers, the eccentricity, and the angular position of the inner tube, with a maximum discrepancy between correlation and experimental data below 10%.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial support provided by Spanish Government through the project RTI2018-096664-B-C21 (FEDER/Ministerio de Ciencia e Innovación-Agencia Estatal de Investigación). Funding for APC: Universidad Carlos III de Madrid (Read & Publish Agreement CRUE-CSIC 2022)en
dc.format.extent9
dc.identifier.bibliographicCitationSerrano, D., Sánchez-Delgado, S., Pérez-Álvarez, R., & Acosta-Iborra, A. (2022). Experimental determination of the convection heat transfer coefficient in an eccentric annular duct. Experimental Thermal and Fluid Science, 136, 110664.en
dc.identifier.doihttps://doi.org/10.1016/j.expthermflusci.2022.110664
dc.identifier.issn0894-1777
dc.identifier.publicationfirstpage1
dc.identifier.publicationissue110664
dc.identifier.publicationlastpage9
dc.identifier.publicationtitleExperimental Thermal and Fluid Scienceen
dc.identifier.publicationvolume136
dc.identifier.urihttps://hdl.handle.net/10016/38483
dc.identifier.uxxiAR/0000033399
dc.language.isoengen
dc.publisherElsevieren
dc.relation.projectIDGobierno de España. RTI2018-096664-B-C21es
dc.relation.projectIDAT-22
dc.rights© 2022 The Author(s).en
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaEnergías Renovableses
dc.subject.ecienciaFísicaes
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.ecienciaQuímicaes
dc.subject.otherBayonet tubeen
dc.subject.otherConvection coefficienten
dc.subject.otherEccentricityen
dc.subject.otherHeating filmen
dc.subject.otherNusselt number correlationen
dc.titleExperimental determination of the convection heat transfer coefficient in an eccentric annular ducten
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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