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Article: Buoyancy-driven displacement natural ventilation in a single-zone building with three-level openings

TitleBuoyancy-driven displacement natural ventilation in a single-zone building with three-level openings
Authors
Issue Date2002
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/buildenv
Citation
Building And Environment, 2002, v. 37 n. 3, p. 295-303 How to Cite?
AbstractTheoretical solutions for thermal stratification and airflow rates are obtained for buoyancy-driven displacement ventilation in a single-zone building with three-level openings. Three displacement natural ventilation modes are identified: (I) the middle opening (MO) is below the stratification interface; (II) MO is above the stratification interface with inflow through MO; (III) MO is above the stratification interface with outflow through MO. It was found that for a wide range of building geometries, the ventilation mode is uniquely determined by the building geometry and the type of buoyancy sources. However, there are certain ranges of building geometry for which displacement ventilation may occur with either mode (I) or mode (II) depending on initial conditions. The significance of this finding is that numerical simulation packages for predicting displacement natural ventilation of buildings need to have the ability to cope with multiple solutions. It was also found that for a given ventilation mode, the location of the stratification interface is a function of the geometrical parameters only and independent of the strength of buoyancy sources. Some general guidelines for optimising natural ventilation in a building with three-level openings are provided. © 2002 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/156630
ISSN
2015 Impact Factor: 3.394
2015 SCImago Journal Rankings: 2.121
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, ZDen_US
dc.contributor.authorLi, Yen_US
dc.date.accessioned2012-08-08T08:43:17Z-
dc.date.available2012-08-08T08:43:17Z-
dc.date.issued2002en_US
dc.identifier.citationBuilding And Environment, 2002, v. 37 n. 3, p. 295-303en_US
dc.identifier.issn0360-1323en_US
dc.identifier.urihttp://hdl.handle.net/10722/156630-
dc.description.abstractTheoretical solutions for thermal stratification and airflow rates are obtained for buoyancy-driven displacement ventilation in a single-zone building with three-level openings. Three displacement natural ventilation modes are identified: (I) the middle opening (MO) is below the stratification interface; (II) MO is above the stratification interface with inflow through MO; (III) MO is above the stratification interface with outflow through MO. It was found that for a wide range of building geometries, the ventilation mode is uniquely determined by the building geometry and the type of buoyancy sources. However, there are certain ranges of building geometry for which displacement ventilation may occur with either mode (I) or mode (II) depending on initial conditions. The significance of this finding is that numerical simulation packages for predicting displacement natural ventilation of buildings need to have the ability to cope with multiple solutions. It was also found that for a given ventilation mode, the location of the stratification interface is a function of the geometrical parameters only and independent of the strength of buoyancy sources. Some general guidelines for optimising natural ventilation in a building with three-level openings are provided. © 2002 Elsevier Science Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/buildenven_US
dc.relation.ispartofBuilding and Environmenten_US
dc.titleBuoyancy-driven displacement natural ventilation in a single-zone building with three-level openingsen_US
dc.typeArticleen_US
dc.identifier.emailLi, Y:liyg@hkucc.hku.hken_US
dc.identifier.authorityLi, Y=rp00151en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/S0360-1323(01)00021-Xen_US
dc.identifier.scopuseid_2-s2.0-0036498294en_US
dc.identifier.hkuros68515-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036498294&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume37en_US
dc.identifier.issue3en_US
dc.identifier.spage295en_US
dc.identifier.epage303en_US
dc.identifier.isiWOS:000173614000009-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChen, ZD=7409481918en_US
dc.identifier.scopusauthoridLi, Y=7502094052en_US

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