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Assessment of displacement ventilation systems in airborne infection risk in hospital rooms

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dc.contributor.authorVillafruela, José Manuel
dc.contributor.authorOlmedo, Inés
dc.contributor.authorBerlanga Cañete, Félix Antonio
dc.contributor.authorRuiz de Adana, Manuel
dc.contributor.orcidhttps://orcid.org/0000-0003-0491-4371
dc.contributor.orcidhttps://orcid.org/0000-0002-7890-7505
dc.date.accessioned2024-12-05T18:03:47Z
dc.date.available2024-12-05T18:03:47Z
dc.date.issued2019-01-30
dc.descriptionThe registered version of this article, first published in Plos One, is available online at the publisher's website: Public Library of Science, https://doi.org/10.1371/journal.pone.0211390
dc.descriptionLa versión registrada de este artículo, publicado por primera vez en Plos One, está disponible en línea en el sitio web del editor: Public Library of Science, https://doi.org/10.1371/journal.pone.0211390
dc.description.abstractEfficient ventilation in hospital airborne isolation rooms is important vis-à-vis decreasing the risk of cross infection and reducing energy consumption. This paper analyses the suitability of using a displacement ventilation strategy in airborne infection isolation rooms, focusing on health care worker exposure to pathogens exhaled by infected patients. The analysis is mainly based on numerical simulation results obtained with the support of a 3-D transient numerical model validated using experimental data. A thermal breathing manikin lying on a bed represents the source patient and another thermal breathing manikin represents the exposed individual standing beside the bed and facing the patient. A radiant wall represents an external wall exposed to solar radiation. The air change efficiency index and contaminant removal effectiveness indices and inhalation by the health care worker of contaminants exhaled by the patient are considered in a typical airborne infection isolation room set up with three air renewal rates (6 h-1, 9 h-1 and 12 h-1), two exhaust opening positions and two health care worker positions. Results show that the radiant wall significantly affects the air flow pattern and contaminant dispersion. The lockup phenomenon occurs at the inhalation height of the standing manikin. Displacement ventilation renews the air of the airborne isolation room and eliminates the exhaled pollutants efficiently, but is at a disadvantage compared to other ventilation strategies when the risk of exposure is taken into account.en
dc.description.versionversión publicada
dc.identifier.citationVillafruela, J. M., Olmedo, I., Berlanga, F. A., & de Adana, M. (2019). Assessment of displacement ventilation systems in airborne infection risk in hospital rooms. Plos One, 14(1), 1-18. https://doi.org/10.1371/journal.pone.0211390
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0211390
dc.identifier.issn1932-6203
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24737
dc.journal.issue1
dc.journal.titlePlos One
dc.journal.volume14
dc.language.isoen
dc.page.final18
dc.page.initial1
dc.publisherPublic Library of Science
dc.relation.centerFacultades y escuelas::E.T.S. de Ingenieros Industriales
dc.relation.departmentMecánica
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.subject33 Ciencias Tecnológicas::3313 Tecnología e ingeniería mecánicas
dc.titleAssessment of displacement ventilation systems in airborne infection risk in hospital roomsen
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationd3d13d8a-e397-42e6-8b75-d90dc1020555
relation.isAuthorOfPublication.latestForDiscoveryd3d13d8a-e397-42e6-8b75-d90dc1020555
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