The aerosol concentration in the room air is an important factor for the spread of viruses and is therefore one of the main causes of an increased risk of infection. The German federal government has now added ventilation to the well-known AHA rule (Abstand/distance, Hygiene/hygiene, Alltagsmaske/everday mask). In addition to maintaining the minimum distance and wearing a mouth and nose cover, it is therefore necessary to increase the supply of fresh air in the interior.
Cross-ventilation with wide-open windows opposite is the most effective measure to reduce the concentration of the virus load in the air. However, this method hides noticeable disadvantages, especially in the winter months: interiors cool down. Permanent reheating is both expensive and bad for the environment. The cold draft in the room also weakens the immune system – we become more susceptible to supposedly harmless pathogens.
Sometimes the largest sources of infection arise in the classroom, as there are up to 30 students and teachers in a confined space. Viruses not only spread very quickly in stale air. It has long been known that the CO2 concentration in classrooms is often far too high. Decentralized ventilation devices ensure a continuous exchange of air. In connection with rapid air exchange in CO2/aerosol tips, they can effectively ventilate classrooms without cooling down the indoor air too much.
When waiting becomes a risk: The risk of infection is also very high in waiting rooms if several people are in the same room for a longer period of time. A wide variety of pathogens can accumulate and spread in the air, especially in medical practices. Continuous ventilation is essential in order to avoid infection. Retrofitting a decentralized ventilation system in the waiting room offers the advantage of automatic basic ventilation of the waiting room without the room cooling down too quickly. Additional boost ventilation intervals when the room is heavily used are reduced to a minimum.
Keep your distance and follow hygiene rules in daycare? With a group of 3- to 6-year-old children in a mostly confined space, implementation is often difficult. However, regular ventilation in the kindergarten should be included as a measure in the standard program. In the winter months, however, it can get really cold in the daycare. With the cold, the immune defense of small children also decreases, which means that pathogens spread faster in the body. Ventilation with heat recovery as ventilation support brings preheated fresh air continuously inside and thus reduces the virus load in the room.
Despite the minimum distance and compliance with hygiene regulations – if several people share an office, the risk of infection with diseases is high. Aerosols are increasingly being emitted, whether in meetings or on the phone, when things get lively in the office. These spread quickly throughout the office space if regular ventilation is not taken into account. But if you open windows frequently, the office cools down faster, especially when it gets really cold outside. The decentralized ventilation helps to create basic ventilation in the office – virus and CO2 concentrations in the room air are steadily decreasing, and intermittent ventilation intervals are minimized. This combination not only meets the requirements of the workplace directive, it also ensures a pleasant working atmosphere – in two senses.
Whether during concentrated work or lively discussions – there is a lot of breathing in the classroom. Aerosols collect in the air to which pathogens can attach. A regular exchange of air is very important, best supported by an automatic, controlled ventilation system by inVENTer.
The new high-performance devices for large rooms by inVENTer exchange the air with an output of up to 90 m³/h in the interior. The decentralized fans are installed in the outer wall and can be easily retrofitted with a core drill hole. The integrated reversing fan draws the used, warm air to the outside in the exhaust air mode and switches to supply air mode after 70 seconds to transport fresh air inside again. The ceramic cylinder inside the fan stores the heat from the exhaust air and transfers it to the incoming cold supply air. This means that up to 88% of the heat is retained.
