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Of
all the additional components needed, the blower
is the most crucial performance of the hoods.
Fume Hoods installations utilizing remote
blowers are the most common type. Since
the entire duct length is under negative air
pressure, any leakage in the duct is draw in
and contained rather than pushed out into the
building environment.
The exhaust blower is positioned on the building's
exterior, usually on the rood' where noises
is less noticeable. By creating suction
within the ductwork, blowers draw air from the
laboratory room, through the hood and the duct
system.
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