Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31560
Title: Characteristics of air pressure fluctuations in high-rise drainage stacks
Authors: Cheng, CL
Mui, KW 
Wong, LT 
Yen, CJ
He, KC
Keywords: Air pressure
Drainage stack
High-rise buildings
Measurement
Issue Date: 2010
Publisher: Pergamon Press
Source: Building and environment, 2010, v. 45, no. 3, p. 684-690 How to cite?
Journal: Building and environment 
Abstract: Maximum air pressure in a drainage stack can deplete the appliance water trap seals that prevent the ingress of foul gases and odors into a habitable space. This study investigates the air pressure fluctuation frequency, as well as the maximum and average air pressures with their respective standard deviations, in a 38 m high drainage stack of a full-scale experimental tower under steady flow conditions of flow rates 1 Ls-1 to 4 Ls-1 discharging at a height between 15 m to 33 m above the stack base. Mathematical expressions are proposed to correlate the maximum air pressure with the probability density function of the data measured. The average prediction and the maximum under-prediction of the absolute peak pressure were determined with the margin of error taken within certain confidence levels. It was demonstrated that water seal failure would likely be occurred at some heights below the discharge locations. The outcome enhances the understanding of the characteristics of air pressure fluctuation within a drainage stack of a high-rise building.
URI: http://hdl.handle.net/10397/31560
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2009.08.006
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

5
Last Week
0
Last month
0
Citations as of Nov 18, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
0
Citations as of Nov 15, 2017

Page view(s)

49
Last Week
0
Last month
Checked on Nov 19, 2017

Google ScholarTM

Check

Altmetric



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