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Reply by crank49

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crank49

4032 posts in 3483 days


#1 posted 07-20-2016 09:52 PM

Fans have a huge range of capacity in terms of CFM as well as inches of pressure.
Generally speaking, the faster it spins, the more air it moves.
Also, as the volume and pressure goes up so does the horsepower required to spin it.
In fact, the power required changes by the square of the volume change and by the cube of the pressure change.

One other inconvenient fact. Manufacturers tend to run fans at the extreme limits of their ability to stay in one piece to get the most out of them as possible. So, increasing horsepower won’t do much without increasing the speed. Increasing the speed, if you don’t know what the limits of the equipment is, is a good way to see how good you are at dodging shrapnel when it flies apart.

Just saying.


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