Concentration of particles and VOC’s occurs anytime people gather in enclosed spaces…and in particular when the climate is controlled. Air conditioning systems necessarily amplify their efficiency by recirculating a portion of the air being conditioned. Not all of the air in a room has to be exchanged for the room to become warmer or cooler.
The processed air is simply the means of moving heat in or out of a space. A room can go from hot to cold and back again without the majority of the air particles in a space actually passing through the air intake (and it’s typical light duty conventional filter).
As a result, most of the air in a given space…and the particles and gasses that that are suspended in it…remain un-filtered day after day and the air is further loaded with suspended materials every time anyone does anything. Literally…anything.
It is ironic that the number one activity that raises the numbers of suspended particles in an air mass…is cleaning. The actions of sweeping and dusting propel particles that took days to settle… back into the air, where they can remain suspended in the air mass for days.
SETAIR uses a combination of tools to effectively process large air masses.
HEPA filters, as defined by the Department of Energy standard adopted by most American industries, remove at least 99.97% of airborne particles 0.3 micrometers (µm) in diameter.
The original HEPA filter was designed in the 1940s and was used in the Manhattan Project to prevent the spread of airborne radioactive contaminants.
SETAIR employs HEPA filters in all of it’s Large Tech Tower and Office sized
Activated Carbon is charcoal that has been treated with oxygen to open up millions of tiny pores resulting in a highly porous filter medium.
A single gram of activated charcoal (carbon) can have a surface area of up to 500 square meters (over 5000 Sq. feet!).
SETAIR uses flow canisters of activated, charcoal to adsorb odors in the form of Volatile Organic Compounds.
Some SETAIR machines carry over 50 lbs of activated carbon.
Ultra Violet Light
Germicidal UV light (UVC) has been successfully utilized in hospitals and public buildings to inhibit microbial growth, spreading of infections and to increase the indoor air quality.
UVC can also help against mold problems by rendering airborne mold particles and mold spores non-viable and even sterilizing surface mold colonies if they are directly irradiated with germicidal UV (UVC) light.
All SETAIR Tech Towers and Office sized filter units include UV emitters.
A fabric “Pre Filter” is an essential part of every SETAIR filter unit.
By capturing larger particles before they reach our HEPA and Carbon filter stages we maximize the effectiveness of those stages.
When cleaning large soundstages SETAIR installs several High Volume conventional filter units whose only job is to filter out the large and bulky part of the contaminants and to stir up the air mass with their relatively clean exhaust so that the HEPA filter machines can further process the air.