Aprilaire 2250 & 2400 ユーザーズマニュアル
these very fine particles and pollutants reaches up to 95%. It
follows, then, that since there are less of these particles in the
air, you may expect a reduction in the necessity for dusting
and cleaning and a longer time interval between
redecorating.
follows, then, that since there are less of these particles in the
air, you may expect a reduction in the necessity for dusting
and cleaning and a longer time interval between
redecorating.
Particle sizes of pollutants vary and are measured in
microns. A micron is 1/25,400th of an inch. A commonly used
illustration of their size is that it would take 200 microns to
reach across a dot made by a sharp pencil. The
accompanying chart shows the range of sizes, in microns, of
the most common pollutants.
illustration of their size is that it would take 200 microns to
reach across a dot made by a sharp pencil. The
accompanying chart shows the range of sizes, in microns, of
the most common pollutants.
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OPERATION
Household dust is typically an accumulation of particles
in a size range of .01 micron (1/2,540,000th of an inch —
invisible to the naked eye) up to 100 microns (the diameter of
a human hair). Pollens and spores, which can aggravate
allergy symptoms, are usually in the 10-100 micron size
range.
invisible to the naked eye) up to 100 microns (the diameter of
a human hair). Pollens and spores, which can aggravate
allergy symptoms, are usually in the 10-100 micron size
range.
The efficiency of the Aprilaire
®
Air Cleaner Media on the
smallest particle which can be seen with the naked eye
(approximately 10 microns) reaches 99%.
(approximately 10 microns) reaches 99%.
*American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Guide
COMMON POLLUTANTS
Particle Sizes in Microns* (1 micron = 1/25,400 inches)
Particle Sizes in Microns* (1 micron = 1/25,400 inches)
0.01
0.1
1
5
10
50
100