pradhy
Mar 31, 2011, 06:34 AM
How is flow rate of air through a ceiling fan compared to its speeed of rotation?
donf
Mar 31, 2011, 07:16 AM
The rating is in CFM (Cubic Feet per minute).
ma0641
Mar 31, 2011, 01:02 PM
Donf is right with the CFM. However, it sounds like you are also asking about speed. Obviously the CFM increases as the fan goes faster. If you have a close fit fan, CFM is lower when blowing up due to air pressure. Bigger diameter fans= more CFM. Impossible to tell you how many CFM per speed since each fan brand speed is different.