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Radiant heating floors with PCM bands for thermal energy storage: a numerical analysis

dc.contributor.authorGonzález Fernández, Bruno 
dc.contributor.authorPrieto González, María Manuela 
dc.date.accessioned2021-11-09T07:31:59Z
dc.date.available2021-11-09T07:31:59Z
dc.date.issued2021
dc.identifier.citationInternational Journal of Thermal Sciences, 162 (2021); doi:10.1016/j.ijthermalsci.2020.106803
dc.identifier.issn1290-0729
dc.identifier.urihttp://hdl.handle.net/10651/60713
dc.description.abstractRadiant heating floors with phase change materials (PCMs) for thermal energy storage (TES) represent an opportunity to achieve improvements in energy efficiency in buildings. In radiant floors that include PCM in macro-capsules the thermal energy is stored during melting and subsequently released during solidification. This paper presents a CFD study for hydronic radiant heating floors with PCM bands embedded in a concrete core in accordance with several arrangements depending on the bandwidth and position with respect to the heating pipes. The heat transfer solutions are compared with those obtained for radiant floors without PCM. Other effects analysed are: the thickness of a wooden cover, which represents the main thermal resistance of the floors, the indoor air temperature and the heating pipe surface temperature. The results show that PCM radiant floors increase thermal energy storage up to 243% and decrease the maximum heat flux between 10 and 18% according to the case. They also release the heat slowly when the heating is off. The time-averaged heat fluxes during the solidification process are between 31.4 and 44.6 W/m2and the solidification last for more than 24 h, allowing time to start a new charge using for instance solar energy.
dc.description.sponsorshipWe wish to express our gratitude to the University Institute of Industrial Technology of Asturias (IUTA), the Ph.D. programme in Energy and Processes Control, University of Oviedo, and Gijón City Council for financial support under project SV-17-GIJÓN-1-22, which made this research work possible.
dc.language.isoeng
dc.relation.ispartofInternational Journal of Thermal Sciences
dc.rights© 2021 Elsevier Masson SAS
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.sourceScopus
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85099176915&doi=10.1016%2fj.ijthermalsci.2020.106803&partnerID=40&md5=11fa7b7b71cd1b6d5930f22db403a6e8
dc.titleRadiant heating floors with PCM bands for thermal energy storage: a numerical analysis
dc.typejournal article
dc.identifier.doi10.1016/j.ijthermalsci.2020.106803
dc.relation.projectIDSV-17-GIJÓN-1-22
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ijthermalsci.2020.106803
dc.rights.accessRightsopen access
dc.type.hasVersionAM


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