Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26281
Title: On-site measurements of ventilation performance and indoor air quality in naturally ventilated high-rise residential buildings in Hong Kong
Authors: Ai, ZT
Mak, CM 
Cui, DJ
Keywords: ACH
High-rise buildings
On-site measurement
PM10
PM2.5
Issue Date: 2015
Publisher: SAGE Publications
Source: Indoor and built environment, 2015, v. 24, no. 2, p. 214-224 How to cite?
Journal: Indoor and built environment 
Abstract: Single-sided ventilation rate is difficult to accurately predict because it has a complex relationship with many factors, including the direction of the approaching wind and building envelope features. In addition, the incursion of outdoor pollutants into the interior through a ventilation opening has been recognized as a serious threat to indoor air quality (IAQ). This article presents on-site measurements of the ventilation performance and IAQ in four high-rise residential rooms in Hong Kong. Key parameters including the air changes per hour, respirable suspended particulate matters (PM: PM10 and PM2.5), and total volatile organic compounds were continuously recorded over a specified period. A comparison of cases with floor-extended and window-like openings is made. The results indicate that single-sided ventilation performs well regardless of the orientation of the apartment room and the configuration of the opening. Previous empirical models based on single-room buildings are not reliable in determining the ventilation rate of high-rise buildings. The measurements reported here also identify an important route for the incursion of outdoor pollutants, namely the downward re-entry of aerosol particles from an upper unit to a lower unit in the same building. A combination of gravitational and wind effects means this downward transport route significantly increases the PM10 and PM2.5 concentrations in the lower room.
URI: http://hdl.handle.net/10397/26281
ISSN: 1420-326X
EISSN: 1423-0070
DOI: 10.1177/1420326X13508566
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
0
Last month
0
Citations as of Sep 15, 2017

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
Citations as of Sep 16, 2017

Page view(s)

41
Last Week
1
Last month
Checked on Sep 18, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.