Net Zero buildings are the ones that produce all the energy they consume.No possible in the U.S. (due the wheather challenges)but as GMcd said the envelope characteristics help a lot.
Normally the air balance is done as follows:
KX Exhaust Fan:100%
Make-up Air: 80% of hood requirement (between 250-400 CFM/feet, refer to ASHRAE 2007-Applications for kitchen equipment)
Air flow from Dining:10%
A/C supply air:10%
If you have ventilation requirements for commercial kitchen
(2-3...
