with airflow
CFM is cubic feet per minute, a cubic foot is around 30cm x 30cm x 30cm
m3/h is a cubic metre per hour 1m x 1m x 1m

am I correct so far??
there is approximately 27 cubic feet in 1 cubic meter? correct??

if an exhaust fan flows 27CFM then it would flow 1620CF per hour equivalent to 60m3/h right??

if we have 3 exhaust fans rated at 37CFM http://www.frozencpu.com/products/24...35&id=RuNHVxnV

and one exhaust fan rated at 187m3/h TT Mixflow inline fan 100mm | Pure Ventilation

would the 3 x exhaust fans at 37CFM flow more air than the one at 187m3/h??

trying to work this out. I need to extract hot air from a 75m3 office that is full of computers with a 2 metre piece of duct with a fan in between. I plan to mount the ducting up near the ceiling and a piece of duct ducting it outside as the room gets damn hot.
but I cant see 3 x 12v computer fans flowing more than this 240V fan???


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