Hi All,

As a new equester, i have very basic questions on air side input
given as follows.

- I have seen in most of the project in the zonal Basic specification tab
we put minimum design flow 0.5 CFM/SF, Outside/person is 20 CFM and if we
have VAV then 0.3 for VAV. But ASHRAE 62.1 says that for office building it
has to be 5 CFM/person + 0.06 CFM/Sqft. My doubt is why this difference is?
what is the correct methodology for Air side input at zone level in proposed
and baseline case?
- What is the strategy for putting ACH in Air flow tab and outside air
tab. How to do it correctly. One thing i have learnt from forum is that Zone
level input overrides System level input.
- Appndx G says the Ventilation rate should be same in proposed and
baseline case so can i put ACH input in proposed and 20
CFM/person/0.4CFM/Sqft in baseline?
- Please suggest any reading material to get better understand above
problems?

I will be highly thankful

Regards,

--

*Javed Iqbal, LEED AP, CEA*