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<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff
size=2>Dave,</FONT></SPAN></DIV>
<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff size=2>Be
sure to check and make sure you are running eQUEST version 3.40 or later.
For a long time eQUEST had a bug that did not allow the economizer in system
type VAVS to work properly. I cannot remember which version solved the
problem but I know the economizer works properly in version
3.40.</FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#0000ff size=2></FONT> </DIV>
<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff
size=2>Mike</FONT></SPAN></DIV>
<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=535385412-29042004><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV align=left><B><SPAN lang=en-us><FONT size=2>Michael Tillou,
PE</FONT><BR></SPAN><SPAN lang=en-us><FONT size=2>etc Group,
Inc.</FONT></SPAN><SPAN lang=en-us><BR></SPAN></B><B><SPAN lang=en-us><FONT
face="Arial Narrow"> </FONT></SPAN></B> </DIV>
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<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> postman@gard.com
[mailto:postman@gard.com] <B>On Behalf Of </B>David Lanceta<BR><B>Sent:</B>
Wednesday, April 28, 2004 2:35 PM<BR><B>To:</B>
BLDG-SIM@GARD.COM<BR><B>Subject:</B> [BLDG-SIM]
eQUEST/economizer<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Hi everybody!</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>First of all, I would like to say thank you to
everybody that have helped me in the past, I used to send emails to everyone
but I´m sure I´ve forgotten some of them.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I´m simulating an office building with eQUEST,
and I´m trying to know how much energy can be saved up. </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>The HVAC system type is "Standard VAV with HW
Reheat" for all the zones, the cold deck reset is 55ºF. I´ve also set up a
drybulb temperature economizer, high limit 65ºF.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I think that when the drybulb
exterior temperature is below 55ºF there should be free-cooling,
but checking the temperature values this only happens when it´s under
49ºF </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>does anybody know why it could be?</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>thanks</FONT></DIV>
<DIV><FONT face=Arial size=2>=================================<BR>David
Lanceta <BR>Área de Mecánica de Fluidos<BR>Centro Politécnico
Superior<BR>Universidad de Zaragoza<BR>María de Luna 3, tel (0034)9761000 ext
5044<BR>50015 ZARAGOZA<BR>ESPAÑA<BR></FONT></DIV><PRE>
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