TY - JOUR
T1 - Experimental and numerical analysis of indoor air quality affected by outdoor air particulate levels (PM1.0, PM2.5 and PM10), room infiltration rate, and occupants' behaviour
AU - Fu, Nuodi
AU - Kim, Moon Keun
AU - Huang, Long
AU - Liu, Jiying
AU - Chen, Bing
AU - Sharples, Stephen
N1 - Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and or publication of this article: This work was supported by the Research Development Fund ( RDF 15-02-32 and RDF 20-01-16 ) of Xi'an Jiaotong-Liverpool University , the Department of Civil Engineering and Energy Technology of Oslo Metropolitan University , the UK ICE Research Development Enabling Fund ( ICE-RDF-2020 ), the Natural Science Foundation of Zhejiang Province ( LY19E080001 ), and Natural Science Foundation of Shandong Province China ( ZR2021ME199 ).
Publisher Copyright:
© 2022 The Authors
PY - 2022/12/10
Y1 - 2022/12/10
N2 - This study conducted an experimental analysis of how indoor air quality (IAQ) is influenced by the outdoor air pollutants levels, infiltration rate, and occupants' behaviours. The impacts of these factors on IAQ were analyzed using on-site measurements and numerical simulations. The results contribute to a better understanding of how to control the Indoor Particulate Level (IPL) for the specific conditions of the studied building. Results showed that occupant behaviour was the primary factor in determining the IPL, significantly changing the number of outdoor particles introduced to the building. Moreover, it was found that the IPL was exponentially correlated to the Outdoor Particulate Level (OPL). Based on numerical simulations, this study concluded that smaller particles do not always have more chance than larger particles of accessing the indoor environment through the building envelope. Meanwhile, a steady-state indoor particle concentration numerical model was established and verified using the 4-fold cross-validation method. Finally, simulation results identified that the room infiltration rate had a positive linear impact on IAQ if the OPL was under 30 μg/m3. This is because the increased air exchange rate can help to dilute indoor air pollutants when the outdoor air is relatively clean.
AB - This study conducted an experimental analysis of how indoor air quality (IAQ) is influenced by the outdoor air pollutants levels, infiltration rate, and occupants' behaviours. The impacts of these factors on IAQ were analyzed using on-site measurements and numerical simulations. The results contribute to a better understanding of how to control the Indoor Particulate Level (IPL) for the specific conditions of the studied building. Results showed that occupant behaviour was the primary factor in determining the IPL, significantly changing the number of outdoor particles introduced to the building. Moreover, it was found that the IPL was exponentially correlated to the Outdoor Particulate Level (OPL). Based on numerical simulations, this study concluded that smaller particles do not always have more chance than larger particles of accessing the indoor environment through the building envelope. Meanwhile, a steady-state indoor particle concentration numerical model was established and verified using the 4-fold cross-validation method. Finally, simulation results identified that the room infiltration rate had a positive linear impact on IAQ if the OPL was under 30 μg/m3. This is because the increased air exchange rate can help to dilute indoor air pollutants when the outdoor air is relatively clean.
KW - Indoor air quality
KW - Infiltration
KW - Occupant behaviour
KW - Outdoor air pollution
KW - Portable air purifier
UR - http://www.scopus.com/inward/record.url?scp=85137161133&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2022.158026
DO - 10.1016/j.scitotenv.2022.158026
M3 - Article
C2 - 35973538
AN - SCOPUS:85137161133
SN - 0048-9697
VL - 851
JO - Science of the Total Environment
JF - Science of the Total Environment
M1 - 158026
ER -