Abstract
Airborne transmission is an important spread mode of infectious diseases. A transmission route between adjacent flats induced by infiltration flow was investigated. On-site measurements were carried out in a typical slab-type public house in Hong Kong, and the tracer gas technique was employed. The transmission mechanism and major impact factor were analyzed. It is found that, the tracer gas concentration in adjacent flats is one order lower than that of the dosing flat. With the increase of spread distance, the tracer gas is. diluted. Airborne transmission from the source flat to the opposite flat is sensitive to the incoming wind condition. The mass fraction of air raised with the increase of wind speed, varied with the change of wind direction. The difference of average mass fraction in different wind speeds or directions is about twice. However, the transmission from the source flat to the other flat has no definite correlation with incoming wind condition. The mass fraction of air from source flat to its opposite flat could be up to 0.18, while to the other one could also reach 0.08. The possible infectious risk between adjacent flats should not be underestimated. The study could help to assess the infectious risk in epidemiologic studies and to validate CFD models for related research.
| Original language | English |
|---|---|
| Title of host publication | Ventilation 2015 - Proceedings of the 11th International Conference on Industrial Ventilation |
| Publisher | International Conference on Industrial Ventilation |
| Pages | 102-109 |
| Number of pages | 8 |
| Volume | 1 |
| ISBN (Electronic) | 9780000000002 |
| Publication status | Published - 1 Jan 2015 |
| Event | 11th International Conference on Industrial Ventilation, Ventilation 2015 - Shanghai, China Duration: 26 Oct 2015 → 28 Oct 2015 |
Conference
| Conference | 11th International Conference on Industrial Ventilation, Ventilation 2015 |
|---|---|
| Country/Territory | China |
| City | Shanghai |
| Period | 26/10/15 → 28/10/15 |
Keywords
- Airborne transmission
- Infiltration flow
- On-site measurements
- Tracer gas method
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Civil and Structural Engineering
- Building and Construction
- Control and Systems Engineering
