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Study of the aerodynamic sealing of a cold store – Experimental and numerical approaches

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dc.contributor.authorGoncalves, J.C.
dc.contributor.authorCosta, J.J.
dc.contributor.authorFigueiredo, A.R.
dc.contributor.authorLopes, A.M.G.
dc.date.accessioned2020-01-23T11:48:11Z
dc.date.available2020-01-23T11:48:11Z
dc.date.issued2012
dc.description.abstractAn experimental study was conducted in a laboratory scale model in order to characterize the airflow generated by an air curtain device (ACD) on the aerodynamic sealing of refrigerated spaces. The laboratory scale model consists of two similar adjacent rooms connected by a door over which the ACD device was installed. The tracer gas technique was used to calculate the sealing effect achieved with the air curtain at different jet velocities. A three-dimensional numerical model was also developed to simulate the heat and mass transfer phenomena, as well as the aerodynamic sealing performance of an ACD. The numerical study was carried out using a commercial CFD code (ANSYS-CFX®) and the turbulence effects were approached by two different turbulence models (k–ε and k–ω SST). The experimental and numerical results show a good agreement for validation purposes. No significant differences were found in the results obtained with the two turbulence models, although the k–ω SST model seems to be more appropriate for the simulations. The existence of an optimum discharge air jet velocity was confirmed. The results also indicate that the air curtain is more efficient in reducing the mass transfer than the energy flow rate across the doorway.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonçalves, J.C., Costa, J.J., Figueiredo, A.R., & Lopes, A.M.G. (2012). Study of the aerodynamic sealing of a cold store – Experimental and numerical approaches. Energy and Buildings, 55, 779-789. doi:10.1016/j.enbuild.2012.10.021pt_PT
dc.identifier.doi10.1016/j.enbuild.2012.10.021pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/6124
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherEnergy and Buildingspt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.enbuild.2012.10.021pt_PT
dc.subjectAir curtainpt_PT
dc.subjectRefrigerated roompt_PT
dc.subjectSealing efficiencypt_PT
dc.subjectHeat transferpt_PT
dc.subjectCFDpt_PT
dc.subjectEnergy savingpt_PT
dc.titleStudy of the aerodynamic sealing of a cold store – Experimental and numerical approachespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage789pt_PT
oaire.citation.startPage779pt_PT
oaire.citation.titleEnergy and Buildingspt_PT
oaire.citation.volume55pt_PT
person.familyNameGonçalves
person.givenNameJoão Carlos
person.identifier1299655
person.identifier.ciencia-idE411-A4A3-F728
person.identifier.orcid0000-0003-3763-1503
person.identifier.scopus-author-id55951854100
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication397e6196-5fed-44bb-b807-dacd9b85ae27
relation.isAuthorOfPublication.latestForDiscovery397e6196-5fed-44bb-b807-dacd9b85ae27

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