ceiling return plenum static pressure?
ceiling return plenum static pressure?
(OP)
How do you get the static pressure for ceiling return plenum when computing for the total static pressure of fan?
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ceiling return plenum static pressure?
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RE: ceiling return plenum static pressure?
RE: ceiling return plenum static pressure?
Btw, what is 0.5in wc is that for the grille pressure drop?
Thank you for the reply.
RE: ceiling return plenum static pressure?
RE: ceiling return plenum static pressure?
Out of topic:
What's the recommended cfm and velocity for 24x24 diffuser?
I'm using V=area x vel x %opening (70% for supply & 80% for return).
Area=24x24
I'm out from HVAC industry for 7years - thanks for understanding.
RE: ceiling return plenum static pressure?
At 80% opening for a 24"x24" the CFM would be about 2240 and the velocity would be about 700 FPM maxium to maintain an acceptible presure drop.
RE: ceiling return plenum static pressure?
RE: ceiling return plenum static pressure?
RE: ceiling return plenum static pressure?
RE: ceiling return plenum static pressure?
If I have straight duct with VAV on it, if I will compute for the total static pressure of straight duct - do i need to add the static pressure of VAV (coil/box/etc) up to the supply diffuser or just at the entry of VAV box? So from the VAV supply duct to the supply diffuser will take care of TSP of VAV (not the AHUs TSP)?