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Numerical evaluation of ventilation performance in children day care centres

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dc.contributor.authorViegas, João Carlos
dc.contributor.authorNogueira, Susana
dc.contributor.authorAelenei, Daniel
dc.contributor.authorCruz, Hildebrando
dc.contributor.authorCano, Manuela
dc.contributor.authorNeuparth, Nuno
dc.date.accessioned2015-02-03T15:58:03Z
dc.date.available2015-02-03T15:58:03Z
dc.date.issued2014
dc.description.abstractModelling of ventilation is strongly dependent on the physical characteristics of the building of which precise evaluation is a complex and time consuming task. In the frame of a research project, two children day care centres (CDCC) have been selected in order to measure the envelope air permeability, the flow rate of mechanical ventilation systems and indoor and outdoor temperature. The data obtained was used as input to the computer code CONTAM for ventilation simulations. The results obtained were compared with direct measurements of ventilation flow from short term measurements with CO2 tracer gas and medium term measurements with perfluorocarbon tracer (PFT) gas decay method. After validation, in order to analyse the main parameters that affect ventilation, the model was used to predict the ventilation rates for a wide range of conditions. The purpose of this assessment was to find the best practices to improve natural ventilation. A simple analytical method to predict the ventilation flow rate of rooms is also presented. The method is based on the estimation of wind effect on the room through the evaluation of an average factor ( ) ¥ 2 ΔP / ρ * and on the assessment of relevant cross section of gaps and openings combined in series or in parallel. It is shown that it may be applied with acceptable accuracy for this type of buildings when ventilation is due essentially to wind action.por
dc.description.sponsorshipThis research was undertaken as part of a research project supported by the Fundação para a Ciência e Tecnologia under Grant PTDC/SAU-ESA/100275/2008 (ENVIRH).por
dc.identifier.citationBuild Simul. 2014 Nov. Doi: 10.1007/s12273-014-0202-7por
dc.identifier.doi10.1007/s12273-014-0202-7
dc.identifier.issn1996-3599
dc.identifier.urihttp://hdl.handle.net/10400.18/2760
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherTsinghua University Press and Springer-Verlag Berlin Heidelbergpor
dc.relationENVIRH : PTDC/SAU-ESA/100275/2008por
dc.relation.publisherversionhttp://link.springer.com/article/10.1007%2Fs12273-014-0202-7por
dc.subjectChildren Day Care Centrespor
dc.subjectAir Permeabilitypor
dc.subjectTracer Gaspor
dc.subjectPFTpor
dc.subjectCONTAMpor
dc.subjectAr e Saúde Ocupacionalpor
dc.titleNumerical evaluation of ventilation performance in children day care centrespor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage21por
oaire.citation.startPage1por
oaire.citation.titleBuilding Simulationpor
rcaap.rightsembargoedAccesspor
rcaap.typearticlepor

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