Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/30212
Title: An energy impact assessment of ventilation for indoor airborne bacteria exposure risk in air-conditioned offices
Authors: Wong, LT 
Mui, KW 
Chan, WY
Keywords: Air-conditioning
Airborne bacteria exposure level
Thermal energy consumption
Ventilation
Issue Date: 2008
Publisher: Pergamon Press
Source: Building and environment, 2008, v. 43, no. 11, p. 1939-1944 How to cite?
Journal: Building and environment 
Abstract: Treatment of fresh air in ventilation systems for air-conditioned offices consumes a significant amount of energy and affects the indoor air quality (IAQ). In this study, energy impact on the ventilation systems was examined against certain IAQ objectives for indoor airborne bacteria exposure risk in air-conditioned offices of Hong Kong. The relationship between thermal energy consumptions and indoor airborne bacteria exposure levels based on regional surveys was investigated. The thermal energy consumptions of ventilation systems operating for carbon dioxide (CO 2) exposure concentrations between 800 and 1200 ppmv for typical office buildings and the corresponding failure probability against some target bacteria exposure levels were evaluated. The results showed that, for a reference indoor environment at a CO 2 exposure concentration of 1000 ppmv, the predicted average thermal energy saving of ventilation system for a unit increment of the expected risk of unsatisfactory IAQ of 1% was 55 MJ m -2 yr -1 and for a unit decrement of 1%, the predicted additional thermal energy consumption was 58 MJ m -2 yr -1 respectively. This study would be a useful source of reference in evaluation of the energy performance of ventilation strategies in air-conditioned offices at a quantified exposure risk of airborne bacteria.
URI: http://hdl.handle.net/10397/30212
ISSN: 0360-1323
EISSN: 1873-684X
DOI: 10.1016/j.buildenv.2007.11.011
Appears in Collections:Journal/Magazine Article

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

SCOPUSTM   
Citations

7
Last Week
0
Last month
0
Citations as of Sep 8, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
0
Citations as of Aug 4, 2017

Page view(s)

37
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.