[BLDG-SIM] Demand Control Ventilation and Economizer Control for a Theatre

[Danni Wang]

Dear Group,

Am I on a correct direction? Any comments are welcome
- - 

I am comparing two ventilation strategies for comfort
control in a Theatre. Option 1 uses air side
economizer (EC) only. Option 2 uses DCV integrated
with EC.
The design OA flow rate is 15cfm/person; and it gets
upto 40% of design flow. If I trust the simulation
(eQuest), DCV+EC has higher electricity use (for space
cooling), and much lower gas use than EC.

My guess for higher electricity use of DCV+EC is in
the simulaiton, the specification of outside air ratio
is pre-occupied by DCV, which set much low outside air
ratio in the mornings in summer, so it used more
electricity to cool the space. DCV+EC reduces cold
outside air in all hours in winter, that agrees with
EC, so it reduced gas use to heat the space.

In eQuest, when I set a MIN_AIR_SCH according to
occupancy ratio, then the EC strategy seem to be
bypassed. Are there any way to optimze DCV+EC in
eQuest? i.e. to turn high outside air volume in the
mornings in summer, turn low in the afternoons when
the theatre is occupied and outside is warmer?

Thank you very much!

Danni Wang



__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

======================================================
You received this e-mail because you are subscribed 
to the BLDG-SIM at GARD.COM mailing list.  To unsubscribe 
from this mailing list send a blank message to 
BLDG-SIM-UNSUBSCRIBE at GARD.COM