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Article: Air Quality and Key Variables in High-Density Housing

TitleAir Quality and Key Variables in High-Density Housing
Authors
Keywordsair quality
urban morphology
negative air ion
PM2.5
air velocity
Issue Date2021
PublisherMDPI. The Journal's web site is located at http://www.mdpi.com/journal/sustainability
Citation
Sustainability, 2021, v. 13 n. 8, p. article no. 4281 How to Cite?
AbstractThe high-rise and high-density housing development in nearby industry relocations is a general urban sprawl phenomenon in fast-growing cities in Southern China. Aside from the low price, the improved air quality in the suburban area is always a reason for home buyers, but the consistent monitoring of air quality and knowledge about how to plan housing estates are lacking. This paper investigates the relationship between the housing morphology and the air quality in three housing estates in Shenzhen. This research utilizes on-site monitoring equipment to examine negative air ions (NAIs) and fine particulate matter (PM2.5) and the Computational Fluid Dynamics (CFD) simulation to examine the air flow. This study reveals the effect of the urban form on the concentration of NAIs and PM2.5 in spatial variation. A correlation study between the configuration variables of the urban form and the CFD air flow pattern helps to identify the key variables influencing the air quality. This study concludes that in housing estates with good air quality of surroundings, the building density has no remarkable effect. However, the footprint of buildings, the layout of podiums, the roughness length of the building, the distance between buildings, the open space aspect ratio and the mean building height may have a remarkable impact on the air flow and quality. These findings may encourage high-density housing development and provide planning guidance for the configuration of housing forms in Southern China and subtropical climate regions around the world
Persistent Identifierhttp://hdl.handle.net/10722/306213
ISSN
2020 Impact Factor: 3.251
2020 SCImago Journal Rankings: 0.612
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJia, B-
dc.contributor.authorLIU, S-
dc.contributor.authorNg, M-
dc.date.accessioned2021-10-20T10:20:24Z-
dc.date.available2021-10-20T10:20:24Z-
dc.date.issued2021-
dc.identifier.citationSustainability, 2021, v. 13 n. 8, p. article no. 4281-
dc.identifier.issn2071-1050-
dc.identifier.urihttp://hdl.handle.net/10722/306213-
dc.description.abstractThe high-rise and high-density housing development in nearby industry relocations is a general urban sprawl phenomenon in fast-growing cities in Southern China. Aside from the low price, the improved air quality in the suburban area is always a reason for home buyers, but the consistent monitoring of air quality and knowledge about how to plan housing estates are lacking. This paper investigates the relationship between the housing morphology and the air quality in three housing estates in Shenzhen. This research utilizes on-site monitoring equipment to examine negative air ions (NAIs) and fine particulate matter (PM2.5) and the Computational Fluid Dynamics (CFD) simulation to examine the air flow. This study reveals the effect of the urban form on the concentration of NAIs and PM2.5 in spatial variation. A correlation study between the configuration variables of the urban form and the CFD air flow pattern helps to identify the key variables influencing the air quality. This study concludes that in housing estates with good air quality of surroundings, the building density has no remarkable effect. However, the footprint of buildings, the layout of podiums, the roughness length of the building, the distance between buildings, the open space aspect ratio and the mean building height may have a remarkable impact on the air flow and quality. These findings may encourage high-density housing development and provide planning guidance for the configuration of housing forms in Southern China and subtropical climate regions around the world-
dc.languageeng-
dc.publisherMDPI. The Journal's web site is located at http://www.mdpi.com/journal/sustainability-
dc.relation.ispartofSustainability-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectair quality-
dc.subjecturban morphology-
dc.subjectnegative air ion-
dc.subjectPM2.5-
dc.subjectair velocity-
dc.titleAir Quality and Key Variables in High-Density Housing-
dc.typeArticle-
dc.identifier.emailJia, B: bjiaa@hku.hk-
dc.identifier.authorityJia, B=rp01003-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.3390/su13084281-
dc.identifier.scopuseid_2-s2.0-85104681696-
dc.identifier.hkuros328347-
dc.identifier.volume13-
dc.identifier.issue8-
dc.identifier.spagearticle no. 4281-
dc.identifier.epagearticle no. 4281-
dc.identifier.isiWOS:000645367800001-
dc.publisher.placeBasel, Switzerland-

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