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VDI-EE 4300 Blatt 14

Measurement of indoor pollution - Requirements for mobile air purifiers to reduce aerosol-borne transmission of infectious diseases

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German title

Messen von Innenraumluftverunreinigungen - Anforderungen an mobile Luftreiniger zur Reduktion der aerosolgebundenen Übertragung von Infektionskrankheiten

Publication date
2021-09
Publisher
Engl. VDI/DIN-Kommission Reinhaltung der Luft (KRdL) - Normenausschuss
Author
Technical Division Environmental Measurement Technologies
Related manuals
Number of pages
14
Available in
German
Abstract

In a pandemic, the aspect of sufficient ventilation indoors becomes a crucial issue with regard to the health of all persons staying inside. Continuous ventilation success is best ensured by a permanently installed, usually centrally controlled room ventilation system (RLT system). However, such systems are still the exception, e.g. in residential rooms or in schools and kindergartens. There, ventilation has to be ensured by opening windows regularly. This applies especially to pandemic situations. In addition to ventilation via window, virus reduction can also be supported by installing simple supply/exhaust air systems or using mobile air cleaners. Mobile air cleaners are not a substitute for ventilation via windows or RLT systems, but may be a useful addition if necessary. This VDI Expert Recommendation defines test conditions for mobile air cleaners with regard to their effectiveness tin reducing virus contamination in a real room. The effectiveness to be demonstrated, refers in each case to the entire system and not to individual components such as filters or the UV-C lamp unit. A suitable device, like all other options, lead to reduction of the virus concentration in indoor air, but this does not mean complete protection against infections. Especially in the near field (below 1,5 m) and in case of direct contact, there can still be increased risks of infection when staying indoors.

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