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Shopping for an air
cleaner? Not sure which type is best for you? Well read on, because you
have found the right site to help you learn more about air cleaners.
Introduction to air cleaners
Pure air and a pollution free ambient atmosphere is not just a
necessity for healthy living, but this is also a necessity for the
manufacturing of silicon wafers for electronic integrated circuits
and certain pharmaceutical products. The process for the
manufacturing of semiconductor wafers, for example, is so heavily
dependant on dust free ambient atmosphere that it cannot be carried
out in a dust contaminated atmosphere. The yield of semiconductor
integrated circuits in a contaminated ambient atmosphere drops
significantly so as to make the manufacturing process uneconomical.
For the manufacturing of the complex larger die chips, the effects
of defects can be catastrophic. A defect rate of 1.6 defects /
square centimeter will end up with a 40% yield for 4 MB DRAMS, 10%
yield for 16 MB DRAMS and 0% yield for 40 MB DRAMS. Higher
complexity chips must have wafers with very low defects. Defects in
semiconductor wafers are very dependant on dust and contamination
introduced during the manufacturing process. Hence, air filtration
and clean rooms are essential in any fabrication facility for
semiconductor wafers. Similarly, some pharmaceutical products need
to be manufactured in biologically as well as dust and chemical
contamination free atmosphere. A pure atmosphere is also essential
for a healthy working environment in the high-rise buildings of
today which can house thousands of workers whose health may be at
risk if the air purification system was to fail or become
contaminated by bacteria (Berriman Associates, 2005).
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