Air flow rate

[mechtester]

On every leaf blower available, the package indicates a maximum air flow rate. I would like to determine the validity of these claims. Any suggestions on the best means of doing so?

 

[DLite30]

I believe the equation for air pressure, say in a pitot tube is P=0.00256 * V^2 where (V=mph, and P=psf).

You may be able to rig up a monometer with plastic tubing, and say a funnel to direct the air into and calucate the head pressure in inches of water...and convert back to V.

Maybe??

 

[1gibson]

Cut circular hole on top of the nozzle, install a hopper filled with ping pong balls, and get a radar gun.

 

[BigInch]

Wind tunnel and some CO₂ ice, or .. a very big cigar.

 

[Latexman]

Hot wire anemometer?



Good luck,
Latexman

 

[waterpipe]

Get a big plastic bag, measure the volume, empty the inside air and then blow it with the fan while taking the time. You get your answer by doing a bit of simple math. The method is called ABFM, W version (Advance Bag Flow Measurement, Waterpipe version).

The method basis is available at:

http://www.lbl.gov/Education/ELSI/Frames/pollution-measure-air-f.html