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At the system level in flow parameters supply air is set to 20,000
cfm but return is set to 16,000 cfm. Difference is set as OA. Clear
the return air flow field and you will get 0 OA air flow.<br>
<br>
On 4/19/2011 2:39 PM, R B wrote:
<blockquote
cite="mid:BANLkTinWsrfzzpZCi_yyLxruxbBgESKFeQ@mail.gmail.com"
type="cite">
<div>Attached are the files. I am looking at RTU1 system.</div>
<div>Thanks</div>
<div>-Rohini<br>
<br>
</div>
<div class="gmail_quote">On Tue, Apr 19, 2011 at 1:12 PM, R B <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:slv3sat@gmail.com">slv3sat@gmail.com</a>></span>
wrote:<br>
<blockquote style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex;
border-left: 1px solid rgb(204, 204, 204);"
class="gmail_quote">Its a VAV system.
<div>
<div class="h5">
<br>
<br>
<div class="gmail_quote">On Tue, Apr 19, 2011 at 12:42 PM,
Brian Fountain <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:bfountain@greensim.com" target="_blank">bfountain@greensim.com</a>></span>
wrote:<br>
<blockquote style="margin: 0px 0px 0px 0.8ex;
padding-left: 1ex; border-left: 1px solid rgb(204,
204, 204);" class="gmail_quote">
<div bgcolor="#ffffff" text="#000000"> When I set OA
cfm to 0 and system min OA to 0, I do get 0 for
variable 39 & 0 for OA in the SV-A report. What
system type?<br>
<br>
Perhaps best if you send .pd2 and .inp to list to
have a look.
<div><br>
<br>
On 4/19/2011 12:40 PM, R B wrote: </div>
<blockquote type="cite">
<div>
<div>
<div><font face="tahoma,sans-serif">Kamel,
Bill,</font></div>
<div><font face="tahoma,sans-serif">Thanks for
the reply. I changed the OA cfm for all
the zones to 0. Now in the SV-A report the
zone OA is showing as zero but the system
OA ratio is 0.2 and the custom hourly
report variables (ratio of outside air to
supply flow - Var 39, and the minimum OA
damper position - Var 80) are still
varying from 0.21 to 0.56. Not sure from
where eQuest is getting 0.2 value or these
other values in the hourly report.</font></div>
<div><font face="tahoma,sans-serif">Does VAV
have a default minimum outside air that
cannot be overwritten?</font></div>
<div> </div>
<div>Thanks</div>
<div>-Rohini<br>
<br>
</div>
<div class="gmail_quote">On Tue, Apr 19, 2011
at 10:16 AM, Haddad, Kamel <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:Kamel.Haddad@nrcan-rncan.gc.ca"
target="_blank">Kamel.Haddad@nrcan-rncan.gc.ca</a>></span>
wrote:<br>
<blockquote style="margin: 0px 0px 0px
0.8ex; padding-left: 1ex; border-left: 1px
solid rgb(204, 204, 204);"
class="gmail_quote">
<div>
<div dir="ltr" align="left"><span><font
color="#0000ff" face="Arial">Rohini,
Try setting all the zone level
outside air fields to the smallest
number you can enter.</font></span></div>
<div dir="ltr" align="left"><span></span> </div>
<div dir="ltr" align="left"><span><font
color="#0000ff" face="Arial">Kamel
Haddad</font></span></div>
<div dir="ltr" lang="en-us" align="left"><span><font
color="#0000ff" face="Arial"> </font></span></div>
<div dir="ltr" lang="en-us" align="left"><span> </span></div>
<div dir="ltr" lang="en-us" align="left">
<hr> </div>
<div dir="ltr" lang="en-us" align="left"><font
face="Tahoma">
<div><b>From:</b> <a
moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a moz-do-not-send="true"
href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>R B<br>
</div>
<b>Sent:</b> April 19, 2011 10:21
<div><br>
<b>To:</b> eQUEST Users List<br>
<b>Subject:</b> [Equest-users] OA
hourly data<br>
</div>
</font><br>
</div>
<div>
<div>
<div><br clear="all">
<font face="trebuchet
ms,sans-serif">Hello all:</font></div>
<div><font face="trebuchet
ms,sans-serif">I am trying to
simulate zero outside air. I set
the min OA on the systems tab to
zero, economizer to fixed
fraction, there are no OA
numbers at the zone level. I
would assume this will give me
zero OA but when I look at the
hourly variables (ratio of
outside air to supply flow -
Var 39, and the minimum OA
damper position - Var 80) they
vary from 0.21 to 0.56. </font></div>
<div><font face="Trebuchet MS">What
am I missing? Any pointers
helpful.</font></div>
<div><font face="Trebuchet MS">-Rohini</font><br>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
</div>
</div>
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