To calculate air flow capacity of a fan in cubic feet per minute (cfm): multiply the average air speed you measured in feet/minute (fpm) by the area of the fan face in square feet. (Area of circle =þ d2/4; where d = diameter in feet). Example: you calculated an 524.93 ft/min average air speed across the face of a 12 inch (1 foot) diameter fan. Air flow (cfm) = speed (fpm) * area (sq ft)= 524.93fpm*þ(1)2/1 sq ft =1048.78 cfm?
The fan in question is visible from this link:http://greglemond.com/#!/revolution
The diameter of the Fan is 30cm or 12inchs in diameter
The website claims the maximum airflow in meters/second^2 is 160 (in imperial 524.93ft) and the maximum newtons of resistance is 40N (I am aware that is probable not the correct phrasing?). All airflow increases in a linear fashion to this maximum point.
I fear I have got a basic fundamental wrong whilst trying to figure out the airflow capacity of this resistance trainer correctly as meters/second^2 and cubic feet per minute are not directly comparable. Can I compare the too figure or would I be better off converting the 160 meters/second^2 and cubic feet per minute to lbs/minute so I can compare this fan to others available on the market?