Outdoor Air Rate Determination
Outdoor Air Rate Determination
(OP)
Hi Folks,
I have a Supply Fan Delivering 22,500 CFM of Supply Air. A Return Fan bringing back: 20,200 CFM. And a washroom exhaust fan in the space exhausting 1000 CFM.
To Summarize:
SA: 22,500 CFM
RA: 20,200 CFM
Washroom Exhaust: 1000 CFM
What is my Outdoor Air rate?
I have a Supply Fan Delivering 22,500 CFM of Supply Air. A Return Fan bringing back: 20,200 CFM. And a washroom exhaust fan in the space exhausting 1000 CFM.
To Summarize:
SA: 22,500 CFM
RA: 20,200 CFM
Washroom Exhaust: 1000 CFM
What is my Outdoor Air rate?





RE: Outdoor Air Rate Determination
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RE: Outdoor Air Rate Determination
RE: Outdoor Air Rate Determination
Bill
Engineering Professionals, Inc.
RE: Outdoor Air Rate Determination
For your case The outdoor air = 22500 SA - 20,200 RA = 2300 CFM
Confirm if this OA is adequate for ventilation and for sum of exhaust + pressurization.