Show simple item record

AuthorAl Assaad, Douaa
AuthorGhali, Kamel
AuthorGhaddar, Nesreen
AuthorKatramiz, Elvire
AuthorGhani, Saud
Available date2024-07-21T06:24:19Z
Publication Date2021
Publication NameBuilding and Environment
ResourceScopus
Identifierhttp://dx.doi.org/10.1016/j.buildenv.2021.107637
ISSN3601323
URIhttp://hdl.handle.net/10576/56835
AbstractHuman exposure to particles indoors occurs through direct inhalation or indirectly through deposition on clothes that release them in other spaces. Ventilation systems are installed to decrease direct exposure but little is known about their effect on clothing-mediated exposures. This work weighs the effect of personalized ventilation (PV) systems on decreasing inhalation exposure to indoor particles versus their contribution to clothing contamination by particle deposition. To conduct this work, a 3D computational fluid dynamics model was developed for an office conditioned by mixing ventilation and common PV air terminal devices: computer mounted panel (CMP), vertical desk grill (VDG) and round movable panel (RMP). Typical particle sources were considered: furniture resuspension and human breathing. The model was validated experimentally in a climatic chamber by comparing real-time particle mass concentration near a thermal manikin. Results showed that CMP delivering 5 l/s reduced total inhalation exposure by 27% and deposition by 72% compared to standalone mixing ventilation. Increasing the flow to 10 l/s led to reductions of 89% in exposure and 56.5% in deposition. A VDG delivering 5 l/s reduced exposure by 33% while deposition reduction was negligible at 3%. Increasing the flow rate to 10 l/s reduced exposure by 91% and slightly increased deposition by 12%. The RMP at 5 l/s and 10 l/s reduced exposure by 89% and 97% respectively and increased deposition by 70% and 80% respectively. Among the three ATDs, the CMP offered the best compromise between reducing inhalation exposure and clothing-mediated exposures at all possible flow rates.
Languageen
PublisherElsevier
SubjectClothing contamination
Computational fluid dynamics
Deposition fraction
Inhalation intake fraction
Personalized ventilation
TitleEvaluation of different personalized ventilation air terminal devices: Inhalation vs. clothing-mediated exposures
TypeArticle
Volume Number192
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