pressure loss of air passing through a small slot
pressure loss of air passing through a small slot
(OP)
Hi All, i have a problem to calculate the pressure loss of a small outlet from a large plenum, i have a plenum of 30m2 with few slots (opening) out of it. the slots are 20mm on 1m.
Can you help in finding what is the pressure loss of the air passing through the slot for the selection of the fan.
Can you help in finding what is the pressure loss of the air passing through the slot for the selection of the fan.





RE: pressure loss of air passing through a small slot
It would be useful if you defined what the end purpose is, is this just a problem for college coursework or is it a real world problem where you need to provide a fluid at a defined pressure or flow at the discharge of the plenum.
if you assume the fan to be stonewalled / dead headed then that makes the solution easier as you can then discount the effect of the 'system' on the fan performance curve.
Essentially it could all boil down to Bernoulli and derivatives thereof if you make some assumptions re. ideal gas etc etc.