VAV Duct Design Question
VAV Duct Design Question
(OP)
When designing duct upstream of vav boxes do you size for both upper limits of velocity and friction per 100' of duct? What limits do you use I.E. Velocity limit of 2500 fpm and friction of .3" per 100'. Or do some size based on just velocity or just friction? (If you sized purely based on velocity it seems that you could end up with some high friction losses in the duct).





RE: VAV Duct Design Question
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RE: VAV Duct Design Question
RE: VAV Duct Design Question
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RE: VAV Duct Design Question
It minimizes energy losses and makes the system easy to balance.