[Equest-users] ASHRAE G3.1.2.9 Supply Fan Power

Jeff Ross-Bain jeff at rbgb.com
Mon Apr 18 12:47:02 PDT 2011


Hi All,

 

If an HVAC system comprises both a supply and return fan, and the formula
for G3.1.2.9 is used, does the result, Pfan, represent ALL of the fan power
for that system including supply and return? If so, should the baseline
model only depict the supply fan values (CFM, kW/CFM, etc.) and ignore the
return? 

 

Many thanks,

 

Jeffrey G Ross-Bain, PE, LEED AP, BEMP

404-228-2893 office 

404-408-2577 mobile
www.rbgb.com

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