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Improving indoor air quality of naturally ventilated classrooms in the northeast of Portugal

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dc.contributor.authorRodrigues, Filipe
dc.contributor.authorFeliciano, Manuel
dc.date.accessioned2020-05-27T14:42:41Z
dc.date.available2020-05-27T14:42:41Z
dc.date.issued2019
dc.description.abstractThis article addresses CO2 dynamics in school classrooms and analyses the improvement of ventilation and indoor air quality resulting from the simple window-opening ventilation strategies. CO2, temperature and relative humidity were measured in four different naturally ventilated classrooms of a Northeastern Portuguese education institution for a wide range of environmental conditions. Indoor CO2 levels were also simulated with a numerical model to help manage the indoor air quality of these spaces through scenario analysis. The results stressed that the occupants were potentially exposed to uncomfortable and unhealthy indoor air quality conditions, since ventilation occurs primarily through infiltration. Under low ventilation conditions, CO2 concentrations easily exceeded the standard of 1250 ppm, even for occupation rates lower than 50%. To provide healthy indoor air to the occupants, acceptable and affordable ventilation rates can be assured by opening at least a small window for a few minutes over the typical 60 minute class period or during class breaks. For occupation rates close to the nominal capacity of classrooms, longer periods and larger opening areas are required to reduce the discomfort and health risks from potential exposure to indoor air pollutants.pt_PT
dc.description.sponsorshipThe authors are grateful to the Foundation for Science and Technology (FCT, Portugal) and FEDER under Programme PT2020 for financial support to CIMO (UID/AGR/00690/2013). We would also like to thank the directors of both schools for having authorized and provided all the necessary support for the development of this study. We also thank all the teachers and students for their cooperative attitude along the development of this research.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRodrigues, Filipe; Feliciano, Manuel (2019). Improving indoor air quality of naturally ventilated classrooms in the northeast of Portugal. Environmental Engineering and Management Journal. ISSN 1582-9596. 18:7, p. 1423-1437pt_PT
dc.identifier.eissn1843-3707
dc.identifier.issn1582-9596
dc.identifier.urihttp://hdl.handle.net/10198/21983
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherEnvironmental Engineering and Management Journalpt_PT
dc.relation.publisherversionSimpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectAir exchange ratept_PT
dc.subjectCarbon dioxidept_PT
dc.subjectMeasurementspt_PT
dc.subjectModellingpt_PT
dc.subjectSchoolpt_PT
dc.titleImproving indoor air quality of naturally ventilated classrooms in the northeast of Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F00690%2F2013/PT
oaire.citation.endPage1437pt_PT
oaire.citation.issue18pt_PT
oaire.citation.startPage1423pt_PT
oaire.citation.titleEnvironmental Engineering and Management Journalpt_PT
oaire.fundingStream5876
person.familyNameFeliciano
person.givenNameManuel
person.identifier.ciencia-id2D11-7230-702B
person.identifier.orcid0000-0002-3147-4511
person.identifier.scopus-author-id6603358480
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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