Show simple item record

AuthorKatramiz, Elvire
AuthorGhaddar, Nesreen
AuthorGhali, Kamel
AuthorAl-Assaad, Douaa
AuthorGhani, Saud
Available date2024-05-02T11:19:28Z
Publication Date2021
Publication NameBuilding and Environment
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.buildenv.2021.107719
ISSN3601323
URIhttp://hdl.handle.net/10576/54577
AbstractWhile personalized ventilation (PV) has been integrated to enhance inhaled air quality, some studies showed that it can contribute to contaminants' transport indoors. This work investigates the effect of the individual preferences of PV users on potential cross-contamination in an office. Two occupants were using PV, sitting either face to face or back to face (i.e. in tandem). One of the occupants was infecting the office space through two respiratory activities: coughing and breathing. The PV flowrate control ranged between 0 and 13 l/s, ensuring thermal comfort. A 3-D computational fluid dynamics model was developed and experimentally validated in a climatic chamber equipped with one thermal manikin representing the infected person and a heated dummy representing the healthy person. The cross-contamination was assessed using the inhaled intake fraction (iF) index, which is the ratio of the contaminants' mass inhaled by the healthy person to that exhaled by the infected person. It was found that minimal exposure levels were reached when the infected person used low PV (in the range of 0-4 l/s) for the tandem seating and high PV(in the range of 9-13 l/s) for the face-to-face seating. Furthermore, the average iF for face-to-face seating was 31% lower than that of tandem seating for coughing and 86% for breathing for all possible PV ventilation cases.
SponsorThe authors would like to acknowledge the financial support of the Munib and Angela Masri Institute of Energy and Natural Resources at the American University of Beirut grant award 103973 . In addition, the American University of Beirut PhD scholarship to Ms. Katramiz is highly acknowledged. The authors would like to also acknowledge the American University of Beirut (AUB) and the National Council for Scientific Research of Lebanon (CNRS-L) for granting a doctoral fellowship to Ms. Douaa Al Assaad. In addition, this collaborative research was made possible by the award [QUEX-CENG-ASPIRE-11/12-7] from ASPIRE Zone Foundation, Doha, Qatar.
Languageen
PublisherElsevier
SubjectCross-contamination
Individual control
Individual preference
Indoor air quality
Personalized ventilation
TitleEffect of individually controlled personalized ventilation on cross-contamination due to respiratory activities
TypeArticle
Volume Number194
dc.accessType Abstract Only


Files in this item

FilesSizeFormatView

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record