Airborne transmission of disease in stratified and non-stratified flow

Peter V. Nielsen*, Chen Zhang, Li Liu

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

Airborne transmissions take place as a transport of viruses or bacteria via the aerosol flow in rooms. The distribution of aerosols tends to be evenly distributed if the flow in the room air is fully mixed. The aerosol distribution will be different if the room air is stratified. A vertical temperature distribution may create stratified layers with either lower or higher concentrations of exhalation from the infected person. Using the stratification effect made it possible to create a reduced cross-infection risk for long-range airborne transmission in some situations, but we need research in system layout to find solutions which will give a safe environment in all practical situations. A solution must be followed up with some necessary restrictions/information of use, if necessary. Another possibility is to use mixing ventilation and accept a higher flow rate of outdoor air.
Original languageEnglish
Title of host publication43rd AIVC -11th TightVent & 9th venticool Conference : Ventilation, IEQ and health in sustainable buildings
Number of pages8
Place of PublicationAalborg, Denmark
Publication date2023
Pages46-52
ISBN (Print)978-2-930471-65-5
Publication statusPublished - 2023
Event43rd AIVC - 11th TightVent & 9th Venticool Conference 2023 : Ventilation, IEQ and health in sustainable buildings - Aalborg University, Copenhagen, Denmark
Duration: 4 Oct 20235 Oct 2023
https://aivc2023conference.org/

Conference

Conference43rd AIVC - 11th TightVent & 9th Venticool Conference 2023
LocationAalborg University
Country/TerritoryDenmark
CityCopenhagen
Period04/10/202305/10/2023
Internet address

Keywords

  • Airborne transmission
  • infectious diease
  • stratified flow
  • displacement ventilation
  • mixing ventilation
  • human exhalation

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