Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/91967
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dc.contributorDepartment of Building Environment and Energy Engineering-
dc.creatorZhang, C-
dc.creatorWang, J-
dc.date.accessioned2022-02-07T07:04:38Z-
dc.date.available2022-02-07T07:04:38Z-
dc.identifier.urihttp://hdl.handle.net/10397/91967-
dc.language.isoenen_US
dc.publisherElsevier BVen_US
dc.rights© 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license(http://creativecommons.org/licenses/by-nc-nd/4.0/).en_US
dc.rightsThe following publication Zhang, C., & Wang, J. (2021). Determining the critical insulation thickness of breathing wall: Analytical model, key parameters, and design. Case Studies in Thermal Engineering, 27, 101326 is available at https://doi.org/10.1016/j.csite.2021.101326en_US
dc.subjectAir preheatingen_US
dc.subjectBreathing wallen_US
dc.subjectBuilding ventilationen_US
dc.subjectCritical thicknessen_US
dc.subjectDarcy's lawen_US
dc.subjectThermal insulationen_US
dc.titleDetermining the critical insulation thickness of breathing wall : analytical model, key parameters, and designen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume27-
dc.identifier.doi10.1016/j.csite.2021.101326-
dcterms.abstractBreathing wall (BW) based on air-permeable porous medium offers an alternative solution for utilizing the conductive heat loss of building envelope to preheat the infiltration ventilation airflow within porous medium. However, current studies neglect the influence of pressure drop within porous medium on the energy performance of BW, which may lead to an overestimation or non-optimal design. In this study, we proposed a framework to determine the critical insulation thickness of BW for minimizing its convective heat loss and pressure drop related energy loss. An analytical model was developed and validated to calculate the heat loss of BW under third-type boundary condition. Darcy's law was applied to estimate the pressure drop of infiltration airflow and its associated energy loss. Case studies were conducted to identify the critical insulation thickness of BW. The critical thickness of BW under different scenarios was investigated. The results demonstrate the existence of critical thickness, which yields the lowest overall heat loss of BW. A larger infiltration airflow rate or lower air permeability of porous medium will result in a downward trend of this critical thickness. The outcomes of this study can provide a design guideline of BW for maximizing its energy saving potential.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationCase studies in thermal engineering, Oct. 2021, v. 27, 101326-
dcterms.isPartOfCase studies in thermal engineering-
dcterms.issued2021-10-
dc.identifier.scopus2-s2.0-85113210988-
dc.identifier.eissn2214-157X-
dc.identifier.artn101326-
dc.description.validate202202 bcvc-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_Scopus/WOSen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextThe studies are supported by the grant (No. 51808239 ) of National Natural Science Foundation of China , and grant (No. XJ2019044 ) of Hong Kong Scholars Program .en_US
dc.description.pubStatusPublisheden_US
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