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What is air-change in HVAC systems and how is it calculated?

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285 views asked Sep 9, 2014 by Mepanet

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The air change is the number of replacing the room air volume per minute.  The required air flow (CFM) for certain air change can be calculated by the following formula:

Q= (VxN)/60

V = Room volume in cubic feet

N = Number of air-change

Q = Air flow in CFM
answered Sep 9, 2014 by Mepanet

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