Belt driven Fans - Motor and Fan Speed
Speed of Fan versus Speed of Motor with Belt Drives
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Belt driven fans are common in heating, ventilation and cooling systems.
The speed of a belt driven fan versus the speed of the motor can be calculated as
df nf = dm nm (1)
where
df = pulley diameter fan (inch, mm)
nf = speed of fan (rpm - rounds per minute)
dm = pulley diameter motor (inch, mm)
nm = speed of fan (rpm - rounds per minute)
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