Air cleaners for virus filtration in restaurants, pubs and canteens
The shutdowns as a result of the coronavirus crisis brought an existential threat to restaurant proprietors in particular. Reserves are exhausted, time is running, and with the regulations gradually being relaxed, the question remains on how to set up efficient hygiene concepts to protect personnel and guests. Restaurant proprietors are already very familiar with the subject of hygiene, knowing all of HACCP to LMHV. However, dealing with airborne viruses and respective protective measures for own guest rooms and customers might present a fairly new situation for any restaurant proprietor, chef de cuisine or canteen operator. An important component for hygiene to prevent airborne infections is to keep the room air free from viruses by means of an effective air purification with professional solutions such as our high-frequency air cleaners
CASE STUDY – The high-performance air purifier TAC V+ in the Munich “Salon Rouge” star restaurant.
Star chef Tohru Nakamura protect his guests and employees from aerosols and viruses in the room air with the high-performance air purifier TAC V+.
Prof. Dr. Kähler from the University of the Federal Armed Forces in Munich carries out scientific measurements to prove that this actually works reliably.
Example ‘restaurant’: With an area of 100 m² and a height of 3 m, the depicted guest room has an air volume of 300 m³, which can be filtered and freed from viruses by two TAC V+ devices almost 8 times per hour (ventilation performance 2,400 m³/h) – this corresponds to an air circulation rate of 8 per hour (clean air volume of 50 m³ per guest with 48 occupied seats).
Prevent the landlord from becoming a host
If attached to aerosols, viruses such as SARS-Cov-2 can survive in the room air for several hours. As various scientific studies prove, this is how they remain infectious. This trait also applies to other pathogens as well, e.g. to influenza viruses. With the increasing number of persons in the guest room, the danger rises to become infected with pathogens by inhaling the air in the room. Only one infected person who does not even know about his or her infection is enough to make the restaurant an infection hotspot.
Separating walls are a start, but don’t help much against viruses
The problem of freely floating aerosols with viruses being attached to them is exactly what it is: They are floating! This is why separating walls are only suitable for separating persons, not virus-laden air. Protective screens or separating walls alone, e.g. installed in-between tables, do not prevent viruses from spreading through the air. Separating walls made of Plexiglas, similar constructions and also protective masks for mouth and nose indeed protect from direct ’virus drizzle rain’ caused by certain manners of talking. However, they do not provide protection from germ-laden aerosol particles that are released into the room air while talking and breathing, where they will continue floating in the form of aerosol accumulations for several hours.
Infectious viruses seem to not get enough of healthy guests
Combining the use of masks and separating walls is a first important approach to reduce the risk of a direct droplet infection with the SARS-CoV-2 virus. However, this measure does not protect from a far greater danger of infection – accumulations of aerosol particles floating freely in the room air!
After all, airborne viruses are not familiar with social distancing rules: Even talking persons emit both large visible droplets as some sort of ’virus drizzle rain’ and, on a much larger scale, tiny aerosol particles, invisible to the eye and contaminated with viruses or bacteria if from infected persons. If only one person in the room becomes infected, the owners risk their restaurant to be closed again by the respective authorities – even if the restaurant had just been opened.
Aerosol accumulations spread like billows of smoke, only invisibly
The accumulation of aerosol consists of simultaneously emitted microfine droplets, comparable to billows of smoke. The particles will spread for several metres up and far across the room, which is why they overcome physical barriers of sneeze guards barriers or separating walls with no problem. As a result, they can get that easily into the respiratory tract and eyes of other people staying on the other side of the separating wall.
Prevent your business from getting shutdown again with a 360-degree hygiene concept
Only a coordinated all-round solution with a direct sneeze guard barrier or a separating wall and additional high frequency air purification reliably and permanently reduces the risk of infection. For this reason, don’t only rely on physical barriers such as protective masks for mouth and nose and separating walls for protecting your employees and guests. Aerosol particles in the room air don’t stick to the distance rules – as they potentially transport viruses, they are the real source of danger! This is why the main objective is to prevent breathing air of all guests from spreading throughout the room.