Influence of Turbulence on Cleaning performance of indoor air cleaners

26 Juli 2021

Prof. Christian Kähler, Professor für Strömungsmechanik und Aerodynamik, hat bei der Deutschen Forschungsgemeinschaft (DFG) das Projekt "The influence of turbulence on the cleaning performance of indoor air cleaners" erfolgreich eingeworben.

Laufzeit: 01.10.2021 bis 30.09.2022
Förderer: Deutsche Forschungsgemeinschaft e. V.  – Fokus-Förderung COVID-19 "Aerosolpartikel und ihre Ausbreitung"

The main objective of the project is the investigation of the influence of turbulent mixing in a room on the cleaning performance of indoor air cleaners.
The working hypothesis is: The cleaning mechanism of room air cleaners relies heavily on the turbulent mixing and less on directed convective aerosol transport. Therefore the turbulence intensity and the temporal and spatial turbulent scales are dominating parameters for the filtering performance. If the turbulent mixing is enhanced by an external fan, the filtering performance can be raised and all areas in the room are filtered almost equally. If the research outcome is positive new approaches to reduce the virus load in rooms can be realized and better models for the prediction of the virus rejection can be established.

^{Bild: © gettyimages / tonefotografia}