Loading ...
Loading ...
Loading ...
Page 5
AIR SCRUBBERS, WHEN AND HOW TO USE THEM
Briefly, an Air Scrubber circulates ambient air through its filter system, usually 3 Layers including a HEPA
final stage, and exhausts clean air into that environment. It is a BIG air purifier. Sometimes, the air scrubber
may also contain activated carbon filters to adsorb odors and chemicals that may be in the ambient air.
The
Bio Air Scrubber Silver
is small enough to be placed inconspicuously in a corner of a room or beside a
piece of furniture and quiet enough to not hinder normal conversation.
Multiple units and be used larger areas to distribute the filtration without requiring ducting in the room.
When should you consider using one or more of these devices? There are only a few universal regulations
or standards, but to say it is all guesswork is not at all true. On a construction site where large amounts of
fine dust are generated, it would be expected that the workers would be wearing eye protection as well as
some type of respirator to protect their lungs. If the site was adjacent to an oice with a full sta, it would
be unthinkable to start the work without a temporary barrier of plastic sheeting to prevent the dust from
covering the occupants and the oice equipment. If the dust was potentially toxic and the particles were too
small to be seen by the naked eye, even more protection for both the workers and the adjacent occupants
would be required. This is the basic reason, it is necessary to filter the air in the work area, and to put that
contaminated area in a “Negative Pressure” condition.
The size and number of machines depends on the volume of the space being cleaned as well as how many
Air Changes per Hour (ACH) are required by local regulation. As a starting point, calculate the square
footage of the room or rooms, multiply by the ceiling height. It is generally recommended to have 3 to 4
air changes per hour in occupied areas. To convert this requirement to a CFM spec for the Air Scrubber,
multiply the Volume of the work area by 4 (or 3) changes/Hour then divide by 60 Minutes/Hour.
To calculate the required CFM to filter the air in a room that is 15 feet wide by 40 feet long with an
8-foot ceiling, plug in the size of the room in the formulas for either 3 or 4 air changes per hour (ACH)
Length x Width x Height x 4 = cfm
60
15 x 40 x 8 x 4 = 320cfm
60
15 x 40 x 8 x 3 = 240cfm
60
15 x 40 x 11 x 4 = 440cfm
60
15 x 40 x 11 x 3 = 330cfm
60
As the filters become loaded, the eective cfm will drop slightly, so be sure you have a little more capacity
than the minimum.
Air Scrubbers may be required to circulate and filter the air within one or more of the contaminated areas to
be collect contaminates as they are released into the air, as well as making certain there are no “dead spots”
in the contained area where there could be a contaminate buildup.
4 ACH 3 ACH
4 ACH 3 ACH
Bio Air Scrubber Silver
• All Air-Care equipment is designed for US standard 115 volt, 60 Hz AC. Most Air-Care equipment
can be special ordered to meet other worldwide standards for a reasonable price and delivery
schedule. Always check the specifications on the equipment before connecting electrical power to
Air-Care equipment. The Bio Air Scrubber Silver can be special quoted for 220 Volt 50 Hz but may
incur additional costs and may not provide the same performance as the 60 Hz model.
Continued from Page 4
Loading ...
Loading ...
Loading ...