Blow or Suck?

[Drutort]

Originally posted by Elledan
One could compare airpressure with torque: an engine with little torque will give up as soon as it encounters resistance, whereas an engine with lots of torque has no problems at all, yet both engines can reach the same number of RPM if they encounter little to no resistance.

If the first fan in a stacked fan configuration encounters resistance, the second fan will assist it, thus in this configuration the same amount of air is moved, even against considerable resistance, like a restricted air intake or exhaust duct.

ya i guess that is true in some ways... that is why i say you have to try and find the best in/out because if you have too much of either you create resistance and those other fans just work harder but dont really do the sucking/blowing all that they can...

i noticed this by feeling the blowing air on a fan when the case was closed then when you open it it was much stronger in blowing... guess that pretty much means there wasnt enough intake... and too much out-take