The combination of ventilation and air cleaning is very effective in reducing aerosols containing germs in gyms and fitness rooms. This has been shown by research conducted by TU Eindhoven.
Shortly after the outbreak of the coronapandemic, TU Eindhoven and Sports Innovator of the Ministry of Health, Welfare and Sport started a research project to discover how gyms could safely reopen.
Research on mobile air cleaners
Professor Bert Blocken of TU Eindhoven studied the effectiveness of mobile air cleaners in filtering aerosols from the air. These tiny droplets spread virus particles over a long distance through a room.
Air cleaning in fitness areas
His first research took place in a gymnasium where 35 people were actively exercising. Ventilation alone does not remove aerosols, was Blocken's first conclusion.
Even if the ventilation is set to maximum, aerosols remain in the room, he told EenVandaag. This is especially true when exercising intensively.
The combination of ventilation and air purification did prove effective. He achieved reductions of 80 to 90 percent.
Plasma air purifier
For the study, Blocken used a plasma air purifier with an effectiveness of 98.5 percent.
This is lower than the air purification capacity of AIR8 air purifiers, which rid the air of 99.97 percent of viruses, bacteria, particulates, odors and harmful gases. This result is achieved by a medical-grade HEPA filter in combination with a number of other filter technologies, which render the filtered out particles harmless.
Insufficient ventilation standards
In addition to the techniques used, it is also essential to install air cleaners of the correct capacity. Since the corona pandemic, it has become clear that the ventilation standards in the Buildings Decree are insufficient to sufficiently remove pathogens and harmful substances.
The Buildings Decree of 2005 states that every person must have at least 3.5 litres of clean oxygen per second per cubic metre at his or her disposal. For gyms this is in any case insufficient. The NOC*NSF uses 10 to 15 liters of clean air per second.
Blocken believes that the combination of ventilation and air cleaning can clean between 20 and 40 litres of air per second.
Our advisors can make a calculation of which air cleaner(s) are needed to guarantee sufficient healthy air in fitness rooms.