VFA Solutions has been commissioned by the City of Antwerp, to conduct indoor air quality measurements for three weeks, carried out in the education sector. The school where the research took place, was localized near one of the busiest highways in Antwerp.
The practical research was focussed on the effect of various air filters and filter classifications on the indoor particle concentration. Hereby, gaining more insight into the costs and benefits of improved air filtration. The study focussed on ultrafine particles deriving from traffic emissions from nearby highways and emissions from industries established in Antwerp. During the project, various filter classifications (F7, F9 and the ASPRA technology) have been tested.
The study was commissioned by the City of Antwerp and was carried out in collaboration with the University of Antwerp. The University of Antwerp have performed several measurements and assessed research results.
Conclusions of the study:
- The PM10 concentration is higher indoor than outdoor, due to the children present in the classroom.
When one moves, skin cells and dust particles of for example clothing are floating in the air. These particles are categorised in the PM10 category. The PM10 concentration in spaces with a high occupancy rate is therefore higher than the outdoor PM10 concentration.
- PM2.5 outdoor particles enter indoor spaces through open windows and doors and are also produced indoors.
By opening windows and doors, polluted outdoor air will enter indoor spaces. PM2.5 particles are normally derived from emissions from traffic and industry. If these sources are present in large numbers in the area, the outdoor air will contain high concentrations of PM2.5.
- When using a low filter classification, more particles will enter through the ventilation system.
PM2.5 particles, especially ultrafine particles, the smallest particles, are so small they can easily penetrate an inferior filter and hereby enter indoor air.
- Attention must be paid to ultrafine particles. These particles are the most harmful for one’s health.
Ultrafine particles are particles which are so small, that after inhalation, they can easily pass though your lungs into your blood and are then transported throughout the body. Depending on the ultrafine particle exposure, they can cause various health risks.
- By opening doors, high concentrations ultrafine particles enter, in spite of the presence of a high-quality filtration system. By applying stand-alone/recirculation air filtration in the space itself, indoor ultrafine particles can be captured.
- The ASPRA technology meets the requirements of F9 filtration classification, with a pressure drop of an F7 filter.
If you are unsure about the air quality in your area and building or want a solution for your air quality problems? Please contact VFA Solutions for air quality measurements and optimal and sustainable air filtration.