[Equest-users] Night time setback

Brian Fountain bfountain at greensim.com
Mon Apr 14 15:15:20 PDT 2014


What about using the NIGHT-VENT-CTRL - keywords to run the supply fans at
reduced volumes during the unoccupied periods?  You would have to play a bit
and set up hourly reports to ensure it is giving you what you are looking
for but might work.

 



 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Bosch,
Crina
Sent: Monday, April 14, 2014 1:20 PM
To: equest-users at lists.onebuilding.org
Subject: [Equest-users] Night time setback

 

I am running a model for an operating room.  My goal is to show the system
savings for a night set back.  I am using a VAV system that is currently
running 24/7 at 100% flow.  My goal is to show the benefit of running this
system at different maximum airflow levels while maintaining constant flow
during unoccupied times.

 

If my OR schedule is 5am to 5pm, I would like the fan to run at 20 ACH
during occupied time, 10 ACH during the first 3 hours of unoccupied time,
and 6 ACH for the remaining unoccupied time.

 

Can I achieve this by adjusting fan schedules, or fan parameters for
different occupancy settings?  Any advice that may point me in the right
direction would be helpful.

 

If three different levels of fan speed are too much to ask, I would be happy
with being able to run at 20 ACH during occ. And 6 ACH during unocc.

 

Crina Bosch
Designer, Sustainability

karpinski
ENGINEERING
3135 Euclid Avenue
Cleveland, OH  44115
P  216.391.3700 ext 3087
F  216.391.0108
E  cbosch at karpinskieng.com
W www.karpinskieng.com

 

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