Indoor Air Quality: Air purification
In addition to (natural) ventilation, air purification can contribute to reducing specific indoor air pollutants, such as dirty air particles, pollen, bacteria and potential viruses. Air purification can be provided in the form of a mobile unit, a fixed purifier or, in some cases, can be integrated into the existing ventilation system.
The important points in selecting such appliances are:
- type of air filter according to the contamination or the infection that you are trying to avoid
- correct sizing of the air purifier on the basis of the volume of the space you wish to purify.
The main types of air cleaners are:
- Air purifier with HEPA filters
- Air filter with ESPF (Electrostatic Precipitation Filtration)
- Air cleaner with UV-C light air treatment
- Air filter using ionisation
- Air purifier with activated carbon filter
These principles may also be combined with or added to the ventilation equipment.
Since these techniques purify only the actual indoor air, air purification will not have any effect on CO2 concentration in the room. Consequently, maintain a continuous intake of fresh air at any time, through windows, grilles or other ventilation systems.
Indoor air purification can be achieved in three ways:
Inactivation
Capture or filtration
Combination of inactivation and filtration
Technology suggestion
