Increased Fan Power with PFP boxes

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Hi All,
I am modeling a baseline case for lab building with exhaust at the
zone level. Project system requirement is PVAV with PFP box. Earlier when i
modeled it without PFP, got acceptable Fan power figure but after
incorporating PFP boxes at zone level my baseline Fan power has gone up by
37% which makes proposed case more efficient. Can anybody put some light on

Thanks in Advance!


*Javed Iqbal, LEED AP, CEA*

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