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To determine a fan or blowers horsepower
use the following equation.
Equation:
 and
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Where:
| T = |
Required Torque, lb-ft |
| WK2 = |
Inertia of load to be accelerated lb-ft2
(See moment of inertia calculations) |
= |
Change of speed, rpm |
| t = |
Time to accelerate the load, seconds |
| W = |
Weight of object, lb |
| R = |
Radius of cylinder, ft |
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