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On the impact of a low-momentum ventilation system with an air purifier unit on indoor aerosol-dynamics

Westhoff, Andreas and Lange, Pascal and Kohl, Andreas (2021) On the impact of a low-momentum ventilation system with an air purifier unit on indoor aerosol-dynamics. In: ILL / ESRF Colloquium. ILL / ESRF Colloquium, 2021-06-25, Grenoble.

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A consortium of industry, research institutes and university have combined their expertise as well as their measurement and simulation methods to carry out real-life indoor aerosol distribution situations. The scientific approach, experimental procedure and results on aerosol dynamics are presented and possible consequences are discussed. Due to SARS-CoV2 transported by aerosol, the indoor aerosol dynamics is a critical factor in the case of coronavirus disease (COVID-19). In the present study we consider the issue of indoor aerodynamics from the point of view of whether a recirculation system based on the concept of displacement ventilation with air filtration can reduce aerosol concentrations and thus maybe the risk of infection. For this purpose we investigate the aerosol dynamics in a room for a particle range 0.3 mu up to 2.5 mu aerodynamic diameter. The experimental setup is provided by the German Aerospace Center (DLR) in Göttingen, which has developed an experimental setup and measurement procedure to verify aerosol dispersion in rooms for common real-life situations. The setup essentially consists of heat dummies to simulate the heat emission of a human body, consumer particle sensors and an aerosol source, using artificial salvia, that simulates the exhalation of the aerosol. Based on this configuration the spatial distribution and dynamics of aerosols are investigated. The technology and the results of two field studies are presented and discussed.

Item URL in elib:https://elib.dlr.de/142910/
Document Type:Conference or Workshop Item (Speech)
Title:On the impact of a low-momentum ventilation system with an air purifier unit on indoor aerosol-dynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Westhoff, AndreasUNSPECIFIEDhttps://orcid.org/0009-0008-7242-2970UNSPECIFIED
Kohl, AndreasUNSPECIFIEDhttps://orcid.org/0000-0001-8351-7256UNSPECIFIED
Date:25 June 2021
Journal or Publication Title:ILL / ESRF Colloquium
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:COVID-19, aerosol dynamics, low-momentum ventilation, air cleaning, mask, open-window ventilation
Event Title:ILL / ESRF Colloquium
Event Location:Grenoble
Event Type:Other
Event Date:25 June 2021
Organizer:Institut Laue-Langevin
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Ground Vehicles
Deposited By: Westhoff, Andreas
Deposited On:29 Jun 2021 13:35
Last Modified:24 Apr 2024 20:42

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