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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.

belt fan motor velocity

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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Related Topics

  • Ventilation Systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more

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