Prof. Dr. Susanne Bailer, Universität Stuttgart
Prof. Dr. Achim Dittler, Karlsruher Institut für Technologie
Prof. Dr. Gunnar Grün, Universität Stuttgart
Prof. Dr. Thomas Iftner, Universitätsklinikum Tübingen
Prof. Dr. Jennifer Niessner, Hochschule Heilbronn
Prof. Dr. Michael Schindler, Universitätsklinikum Tübingen
Prof. Dr. Konstantinos Stergiaropoulos, Universität Stuttgart
Prof. Dr. Zöllner, Hochschule Heilbronn
The corona pandemic continues to restrict public life and has far-reaching long-term effects on German society, culture, science, and the economy.
In particular, the spread of the corona virus indoors and via airborne particles, i.e. aerosols, is currently at the center of many discussions and is determining for many measures - from the operation of schools and kindergartens, hygiene in hospitals and medical practices, in offices, administrative and production facilities through to the hotel, restaurant and event industry.
In order to master the possible risk of infection via highly pathogenic aerosol-borne viral pathogens (SARS-CoV-2, influenza etc.), air purification and inactivation technologies are hotly debated and more and more promising devices are coming onto the market. In the absence of established test and evaluation procedures, however, no statements can currently be made about the effectiveness and comparability of such devices for inactivating SARS-CoV-2 and other aerosol-borne pathogens, so that an evidence-based assessment is not possible.
This lack of procedures begins with the selection of suitable test aerosols depending on the technology to be tested, their application, characterization and sampling, the selection and comparability of surrogate viruses with regard to the original pathogen and extends to the definition of suitable test arrangements and procedures to the necessary ones accompanying investigations, such as the proof of by-products or the sound power.
Thermal dummies with PM1 particle sensors (left) and simulation of aerosol particle transport with an infected dummy and an air purifier (right). Simulatin: Adrian Tobisch, HHN.
In addition, radiation intensity, temperature, and ozone concentration are measured.