The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Vornanen-Winqvist, Camilla Toomla, Sander Ahmed, Kaiser Kurnitski, Jarek Mikkola, Raimo Salonen, Heidi 2017-11-21T13:36:20Z 2017-11-21T13:36:20Z 2017
dc.identifier.citation Vornanen-Winqvist , C , Toomla , S , Ahmed , K , Kurnitski , J , Mikkola , R & Salonen , H 2017 , The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study . in 11th Nordic Symposium on Building Physics, NSB2017 . vol. 132 , Energy procedia , vol. 132 , Elsevier , pp. 165-170 , Nordic Symposium on Building Physics , Trondheim , Norway , 11-14 June . DOI: 10.1016/j.egypro.2017.09.679 en
dc.identifier.issn 1876-6102
dc.identifier.other PURE UUID: 6220a31b-0a70-4533-b5c9-46f00fd27a8a
dc.identifier.other PURE ITEMURL:
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dc.description.abstract This paper is a case study of ventilation and indoor air quality (IAQ) investigations in an extensively repaired comprehensive school in Finland. Our main hypothesis is that positive pressure between air indoors and outdoors can be used for decreasing the concentration of harmful chemical and microbiological agents in indoor air, as well as occupants´ complaints about IAQ, in a building waiting for new repairs or with unsolved IAQ problems. Research was undertaken on a building consisting of 12 classrooms, and served by one air handling unit. It found that the ventilation system was crucially unbalanced. However, IAQ measurements did not explain occupants´ symptoms, which were suspected to be related to the impurities leaked through the building envelope caused by the high negative pressure. To eliminate the potential harmful effects of the building related sources and infiltration airflows, the air handling unit was adjusted to generate a 5-7 Pa positive pressure for a period of 4 months. In the next plannedphase of the study, moisture content of the structures during the heating season will be measured, as well as potential changes in perceived IAQ and microbial contamination. en
dc.format.extent 6
dc.format.extent 165-170
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Elsevier
dc.relation.ispartof Nordic Symposium on Building Physics en
dc.relation.ispartofseries 11th Nordic Symposium on Building Physics, NSB2017 en
dc.relation.ispartofseries Volume 132 en
dc.relation.ispartofseries Energy procedia en
dc.rights openAccess en
dc.subject.other Energy(all) en
dc.subject.other 212 Civil and construction engineering en
dc.subject.other 2 Engineering and technology en
dc.subject.other Energy engineering en
dc.title The effect of positive pressure on indoor air quality in a deeply renovated school building – a case study en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Civil Engineering
dc.subject.keyword Positive pressure
dc.subject.keyword mechanical ventilation
dc.subject.keyword indoor air quality
dc.subject.keyword school building
dc.subject.keyword Energy(all)
dc.subject.keyword 212 Civil and construction engineering
dc.subject.keyword 2 Engineering and technology
dc.subject.keyword Energy engineering
dc.identifier.urn URN:NBN:fi:aalto-201711217619
dc.identifier.doi 10.1016/j.egypro.2017.09.679
dc.type.version publishedVersion

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