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Updated: May 25, 2026

Detection of Viruses from Bioaerosols Using Anion Exchange Resin
Published on: August 22, 2018
Inter-flat airflow and airborne disease transmission in high-rise residential buildings
1Department of Building Services Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China. bejlniu@polyu.edu.hk
Abstract:
1. A virus-spread mechanism is related to inter-flat or interzonal airflow through open windows caused by buoyancy effects. 2. Both on-site measurements and numerical simulations quantify the amount of the exhaust air that exits the upper part of the window of a floor and re-enters the lower part of the open window of the immediately upper floor. 3. Ventilation air could contain up to 7% (in terms of mass fraction) of the exhaust air from the lower floor.4. In high-rise buildings, windows flush with the façade are a major route for the vertical spread of pathogen-containing aerosols, especially those<1 μm in diameter.
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