Dear All:-
we have some doubts in Ez (ZONE AIR DISTRIBUTION EFFECTIVENESS) selection in ventilation design
we are supply fresh air using Fresh air fans, ERV, Treated fresh air units, Evaporative cooler units
what value we take for EZ in below cases
1.Fresh air fans (Direct outside air)
2.Treated fresh air units (below ambient air temperature)
3.Evaporative cooler units (below ambient air temperature)
4.ERV (below ambient air temperature)
Kindly tell the suitable EZ values for all above cases separately
Gustavo De las Heras Izquierdo
LEED Expert181 thumbs up
September 1, 2016 - 7:24 pm
Hi Samy,
You can find Ez values in Table 6-2 (I'm pretty sure you already know this).
Basically, you need to know if you are providing cool or warm air. If you have both systems, then heating is your worst case scenario. You also need to know your distribution configuration: ceiling/floor air supply and ceiling/floor air return.
Then, use table 6-2 to find your system's Ez.