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  4. Effectiveness of a personalized ventilation system in reducing personal exposure against directly released simulated cough droplets
 
research article

Effectiveness of a personalized ventilation system in reducing personal exposure against directly released simulated cough droplets

Pantelic, J.
•
Tham, K. W.
•
Licina, D.
2015
Indoor Air

The inhalation intake fraction was used as an indicator to compare effects of desktop personalized ventilation and mixing ventilation on personal exposure to directly released simulated cough droplets. A cough machine was used to simulate cough release from the front, back, and side of a thermal manikin at distances between 1 and 4 m. Cough droplet concentration was measured with an aerosol spectrometer in the breathing zone of a thermal manikin. Particle image velocimetry was used to characterize the velocity field in the breathing zone. Desktop personalized ventilation substantially reduced the inhalation intake fraction compared to mixing ventilation for all investigated distances and orientations of the cough release. The results point out that the orientation between the cough source and the breathing zone of the exposed occupant is an important factor that substantially influences exposure. Exposure to cough droplets was reduced with increasing distance between cough source and exposed occupant.

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Type
research article
DOI
10.1111/ina.12187
Author(s)
Pantelic, J.
Tham, K. W.
Licina, D.
Date Issued

2015

Published in
Indoor Air
Volume

25

Issue

6

Start page

683

End page

693

Editorial or Peer reviewed

REVIEWED

Written at

OTHER

EPFL units
HOBEL  
Available on Infoscience
July 3, 2018
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/147082
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