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Anonymous Poster

Fan Speed

11/19/2010 10:16 PM

how to find the fan speed when air flows through a duct at 100CFM. axial fan. 10 degree blade inclination.
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Hendrik
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#1

Re: fan speed

11/19/2010 11:18 PM

Dimensions? ? ? ? ? ?

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Anonymous Poster
#2
In reply to #1

Re: fan speed

11/20/2010 1:57 AM

fan with 4 leaf. leaf inclined at 15 degrees to the plane perpendicular to the shaft axis. at tip the length is 2 inch and as it converges to the centre it becomes 0.75 inch. the shaft dia is 1 inch.
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Codemaster
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#3

Re: Fan Speed

11/20/2010 10:35 AM

Presumably it's direct-coupled. Look at the motor nameplate.

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PWSlack
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#4

Re: Fan Speed

11/22/2010 11:14 AM

......and if it isn't, multiply the motor speed by the gearing or belt ratio to obtain the fan speed.

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Anonymous Poster
#5
In reply to #4

Re: Fan Speed

11/22/2010 9:42 PM

the fan is free to rotate. it gets its power from the air hitting its blades. No motor or gear is preset.
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Anonymous Poster (2); Codemaster (1); Hendrik (1); PWSlack (1)

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