[Equest-users] warehouse supplemental supply fans

Bishop, Bill wbishop at pathfinder-ea.com
Mon Jan 24 11:12:01 PST 2011


Will,
I'm not sure how you are setting up your supplemental supply fans. You
could try using a minimum flow schedule at the zone level to vary the
flow of the system supply fan. If you are trying to model exhaust fans,
you could also apply an exhaust fan schedule at the zone level. If the
supplemental fans are for circulation only (not supply or exhaust, but
just blowing air around), then model them as a process load.
Regards,
Bill
 
William Bishop, PE, BEMP, LEED(r) AP | Pathfinder Engineers & Architects
LLP
Mechanical Engineer
 
 134 South Fitzhugh Street                 Rochester, NY 14608
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________________________________

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Will
Mak
Sent: Monday, January 24, 2011 12:36 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] warehouse supplemental supply fans
 
A follow up question to this, has anyone been successful in controlling
the max CFM out of a unit with seasonal schedules. For example, a system
can produce 15000 CFM during the winter but 30000 CFM during the summer?
This would help me with the modeling of these supplemental supply fans
that serve the warehouse space as they only operate during the summer.
My strategy would be to schedule this extra CFM during the summer,
though I am still trying to figure out how to properly model the actual
energy usage since the fan power from the make up units differ from the
supply fans...
 
William Mak, LEED Green Associate
Mechanical Design Engineer

EPSTEIN
Architecture
Interiors
Engineering
Construction

600 West Fulton Street
Chicago, Illinois 60661-1259

D: (312) 429-8116
F: (312) 559-1217
E: wmak at epsteinglobal.com
W: www.epsteinglobal.com <http://www.epsteinglobal.com/> 

* Epstein is a firm believer in sustainability. We ask that you please
consider the environment before printing this e-mail.
 
From: Will Mak 
Sent: Wednesday, January 19, 2011 10:43 AM
To: 'equest-users at lists.onebuilding.org'
Subject: warehouse supplemental supply fans
 
Hello all,
 
I am working on an energy model for a warehouse in Dallas, TX. The
design intent of the warehouse area required 1 air change per hour
during the summer. The fans are suppose to operate simultaneously as
makeup units that serve the warehouse. Therefore, 10 make up air units
and 10 supply fans serve the warehouse area to meet this air change
requirement. Modeling the makeup air units can be done by eQuest but I
am curious how I should incorporate the supplement supply fans?
 
Thanks!
 
William Mak, LEED Green Associate
Mechanical Design Engineer

EPSTEIN
Architecture
Interiors
Engineering
Construction

600 West Fulton Street
Chicago, Illinois 60661-1259

D: (312) 429-8116
F: (312) 559-1217
E: wmak at epsteinglobal.com
W: www.epsteinglobal.com <http://www.epsteinglobal.com/> 

* Epstein is a firm believer in sustainability. We ask that you please
consider the environment before printing this e-mail.
 
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