[Equest-users] FC+DOAS

[Joe Fleming]

Search DOAS in the user archives and you will find a bunch of discussions on
this topic.

 

First you need to be in detailed mode, for some reason the DOE engine (maybe
just eQuest), doesn't have the skills to make a dedicated outdoor air system
as a drop down selection.  

 

Next, what is the supply air temperature entering the zones from the DOAS?
Cold?  Room temperature? Hot?

What is the process that the DOAS goes through to get the leaving air
temperature at set-point?

 

Typically, you need to create a "dummy space" and assign it to a "dummy
zone" then assign your first system to this zone.  If you already created
systems you can always open your .inp file and cut and paste the DOAS to the
top of the systems list so that it will become your first system.  Go ahead
and assign all of the outside air to your DOAS "dummy zone" and then choose
outside air from system for all of the systems that this DOAS serves.   It
will only be able to find OA from systems above it on the component tree, so
make sure your DOAS is at the top.

 

 

Joe Fleming, E.I., LEED AP BD+C, BEMP

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of tiejun hu
Sent: Thursday, April 14, 2011 1:11 AM
To: equest-users
Subject: [Equest-users] FC+DOAS

 

hi equesters

            Dose anybody have experiences for FC+DOAS, in my modle, outdoor
air processed by independent air-condition unit, then supplied to room
directly, do not go through FC inlet. as far as i kown, outdoor air and
return air combined process in FC in some countries,like below picturebut On
the upper right corner,i see an outdoor air fan, is it an DOAS? if so ,how
to realize it in equest? and how to set in the tab "OA FROM SYSTEM"?

 any words will be appreciated!

 
yours sincere

 

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