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How to calculate natural ventilation (cfm) for podiums in the gulf?

I need a method to calculate the percentage of natural ventilation required in Podiums?

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Question added by Abutalha Syed , HVAC Engineer , M/s Zoh-Air Engineer
Date Posted: 2018/05/12
Thiruppathi Arumugam
by Thiruppathi Arumugam , Mechanical HVAC Engineer , Refrigeration world W.L.L

Generally, Do you know the formulae for Ventilation calculation?

CFM= Volume of room * ACH / 60 .

For Public Auditorium we should assume ACH as 12 - 14. 

ACH- Air Changes Rate per Hour

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