Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/80598
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dc.contributorDepartment of Building Services Engineering-
dc.creatorZhang, T-
dc.creatorYang, H-
dc.date.accessioned2019-04-23T08:16:23Z-
dc.date.available2019-04-23T08:16:23Z-
dc.identifier.urihttp://hdl.handle.net/10397/80598-
dc.description2018 Applied Energy Symposium and Forum, Carbon Capture, Utilization and Storage, CCUS 2018, Perth, Australia, 27-29 June 2018en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.rights© 2018 Elsevier Ltd.en_US
dc.rightsThis is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/)en_US
dc.rightsThe following publication Zhang, T., & Yang, H. (2018). Optimal thickness determination of insulating air layers in building envelopes. Energy Procedia, 152, 444-449 is available at https://doi.org/10.1016/j.egypro.2018.09.251en_US
dc.subjectBuilding envelopesen_US
dc.subjectFlow and heat transferen_US
dc.subjectInsulating air layeren_US
dc.subjectOptimal thicknessen_US
dc.titleOptimal thickness determination of insulating air layers in building envelopesen_US
dc.typeConference Paperen_US
dc.identifier.spage444-
dc.identifier.epage449-
dc.identifier.volume152-
dc.identifier.doi10.1016/j.egypro.2018.09.251-
dcterms.abstractIn building envelopes, using enclosed air layer becomes a popular way of thermal insulation, since the air has a much lower conductivity coefficient, and is much cheaper than other building materials. The motivation of this research is to investigate the coupled convective and radiative heat transfer in the air layer of building envelopes, in order to find the optimal geometrical parameters of the insulating air layers. Based on CFD technology, a Ra number judgment basis is summarized for flow pattern judge in insulation air layers, and the coupled convective and radiative heat transfer characteristics across the air layer is analyzed. The results indicated that a larger layer height results in a weaker convective heat transfer; when the thickness is below 20mm, an increasing thickness leads to a considerable decrease in the heat transfer; but when thickness exceeds 20mm, the heat transfer is slightly influenced by the thickness. The optimal thickness of the insulation air layer is 20-30mm depending on the climate condition.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationEnergy procedia, 2018, v. 152, p. 444-449-
dcterms.isPartOfEnergy procedia-
dcterms.issued2018-
dc.identifier.scopus2-s2.0-85058244897-
dc.relation.conferenceApplied Energy Symposium and Forum, Carbon Capture, Utilization and Storage [CCUS]-
dc.identifier.eissn1876-6102-
dc.description.validate201904 bcma-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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