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Analysis of the air infiltration through the doorway of a refrigerated room using different approaches

2019Journal article Restricted access
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dc.contributor.authorGonçalves, J. C.
dc.contributor.authorCosta, J.J.
dc.contributor.authorLopes, A.M.G.
dc.date.accessioned2020-01-21T09:01:43Z
dc.date.issued2019
dc.description.abstractThis paper presents the study of the air movement through the doorway of a refrigerated room, using both numerical and experimental approaches. Firstly, a comparison is made between the experimentally observed infiltration rates and the predictions by seven empirical models. For different test conditions of the specific laboratory configuration under analysis (a refrigerated room at laboratory scale), the infiltration rate was measured using the tracer gas technique. A three-dimensional numerical model was developed to simulate the heat and mass transfer phenomena, using a commercial CFD code (ANSYS-CFX®). For the simulations, turbulence effects were taken into account using the k- SST turbulence model. CFD results showed a good agreement with experimental data, confirming that the numerical model is appropriate to evaluate this physical phenomenon. The experimental and numerical results showed that the neutral flow level is located above the doorway mid-height and that the maximum airflow velocity occurs near the doorposts. Results also evidenced that, although most of the empirical models tend to overestimate the infiltration rate, some of them present a quite good prediction ability. Measurements in a real scale refrigerated room confirmed the trend obtained in the laboratory installation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonçalves, J.C., Costa, J.J., & Lopes, A.M.G. (2019). Analysis of the air infiltration through the doorway of a refrigerated room using different approaches. Applied Thermal Engineering Journal, 159 (113927). Doi: 10.1016/j.applthermaleng.2019.113927pt_PT
dc.identifier.doi10.1016/j.applthermaleng.2019.113927pt_PT
dc.identifier.issn1359-4311
dc.identifier.urihttp://hdl.handle.net/10400.19/6113
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherApplied Thermal Engineering Journalpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1359431119302133pt_PT
dc.subjectInfiltration loadpt_PT
dc.subjectCFDpt_PT
dc.subjectRefrigerated roomspt_PT
dc.subjectHeat transferpt_PT
dc.subjectEnergy consumptionpt_PT
dc.titleAnalysis of the air infiltration through the doorway of a refrigerated room using different approachespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage113927pt_PT
oaire.citation.titleApplied Thermal Engineeringpt_PT
oaire.citation.volume159pt_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.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication397e6196-5fed-44bb-b807-dacd9b85ae27
relation.isAuthorOfPublication.latestForDiscovery397e6196-5fed-44bb-b807-dacd9b85ae27

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