Hi All,
Assuming that one of the hazardous chemical area also has a fresh air supply (in addition to the exhaust), how do we determine if the min exhaust rate (0.5cfm/sq.ft) is achieved.
Are we supposed to compute: Exhaust (cfm) / Area (sq.ft) ?
OR
[Exhaust (cfm)- Supply (cfm)]/ Area (sq.ft)
Thanks for your clarification
Dylan Connelly
Mechanical EngineerIntegral Group
LEEDuser Expert
472 thumbs up
October 18, 2011 - 6:29 pm
Exhaust (cfm) / area (sq.ft) is correct.
For differential pressure you take into account the supply cfm.