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dc.contributor.authorElguezabal, P.
dc.contributor.authorLopez, A.
dc.contributor.authorBlanco, J.M.
dc.contributor.authorChica, J.A.
dc.date.accessioned2019-09-18T13:07:26Z
dc.date.available2019-09-18T13:07:26Z
dc.date.issued2020-02
dc.identifier.citationElguezabal, P., A. Lopez, J.M. Blanco, and J.A. Chica. “CFD Model-Based Analysis and Experimental Assessment of Key Design Parameters for an Integrated Unglazed Metallic Thermal Collector Façade.” Renewable Energy 146 (February 2020): 1766–1780. doi:10.1016/j.renene.2019.07.151.en
dc.identifier.issn0960-1481en
dc.identifier.urihttp://hdl.handle.net/11556/764
dc.description.abstractActive façade systems incorporating solar thermal collectors currently offer very promising energetic solutions. From among the available systems, a simple solution is the unglazed heat collector for potential integration in low-temperature applications. However, when adopting system definitions, the modification of some design parameters and their impact has to be fully understood. In this study, the case of an unglazed collector integrated into a sandwich panel is assessed and a specific analysis is performed for a proper assessment of the influence of key design parameters. Based on that case study of the real built system, a CFD model is developed and validated and a parametric assessment is then performed, by altering the configurations of both the panel and the hydraulic circuit. In this way, the potential of each measure to harness solar energy can be evaluated and each parameter with its different level of impact can be highlighted, to identify those of higher relevance. A characterization of the real solution completes the study, by providing the efficiency curves and the total energy collected during the experimental campaign. The maximum estimate of the efficiency of a 6 m2 façade was within a range between 0.47 and 0.34 and the heat loss factor was between 4.8 and 7.5. The case study exercises reveal the real energy efficiency and solar production patterns. There was also an opportunity to consider significant improvements to increase the output of the active façade. The main conclusions concerned the different criteria that improved the definition of the system and greater comprehension of alternative designs that may be integrated in the underlying concept.en
dc.description.sponsorshipThe authors are grateful to the Basque Government for fundingthis research through projects IT781-13 and IT1314-19 and to allthose involved in the different stages for their guidance andinvaluable help.The authors would also like to thank all those companies andresearchers participating in the BASSE project for their stronginvolvement during that research. Results from BASSE project haveinspired present research. The BASSE project received funding fromthe European Union, RFCS Program, Research Fund for Coal and Steel project Building Active Steel Skin (BASSE, Grant Agreement noRFSR-CT-2013-00026)en
dc.language.isoengen
dc.publisherElsevier Ltden
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleCFD model-based analysis and experimental assessment of key design parameters for an integrated unglazed metallic thermal collector façadeen
dc.typearticleen
dc.identifier.doi10.1016/j.renene.2019.07.151en
dc.rights.accessRightsembargoedAccessen
dc.subject.keywordsSolar façadeen
dc.subject.keywordsActive envelopesen
dc.subject.keywordsSandwich panelsen
dc.subject.keywordsUnglazed and integrated solar collectoren
dc.subject.keywordsSolar heatingen
dc.journal.titleRenewable Energyen
dc.page.final1780en
dc.page.initial1766en
dc.volume.number146en


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