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<p class=MsoNormal><span style='color:#1F497D'>What is the climate like?
If you have a lot of cooling hours where the outside air temperature is lower
than the space temperature it will hurt your cooling. For example, if it
is 60 outside and your building is calling for cooling. With a 74 degree
space temperature, if your running your ERV your actually raising the outside
air temp to lets say 65 then cooling it back down. One way to help this
out is to set your ERV to run “when minimum outside air” rather
than “when fans on”. This will allow the unit to
economize. You can then continue to play with the controls until you get
the best savings out of it. If the units cant economize you can also set
the ERV to run based on outside air delta t’s or delta h’s.
You can also set the ERV to put off a particular temperature, such as 55. I believe
you can set both a cooling and a heating temp. You will then have
to choose the method of either bypassing air or modulating the wheel speed to
give you your specified leaving air temperature.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Hope this helps.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Walson,
Kristy<br>
<b>Sent:</b> Thursday, January 07, 2010 8:15 AM<br>
<b>To:</b> 'equest-users@lists.onebuilding.org'<br>
<b>Subject:</b> [Equest-users] Modeling ERV's in Equest<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi all,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>We are using Equest to model a 500,000 sq ft federal prison
facility. More than half of the AHU's have energy recovery, so we modeled
this at each applicable unit. When we run the model with ERV's vs. the model
with no ERV's, it appears as though the ERV's are actually hurting us on the
cooling energy. Is there a quirk when modeling ERV's in Equest (much like
the bug fix in the Advanced Edit section of VisDOE)? Does anyone have any
suggestions, or has anyone run into a similar problem before? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks in advance for the advice...<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>P.S. Kim - are you happy I'm finally asking a question about
Equest?? :)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><b>Kristy M. Walson, PE, LEED AP<o:p></o:p></b></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#333333'>Mechanical
Engineer / Sustainable Design<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='color:#006363'>TLC Engineering for Architecture<br>
</span></b><b><span style='font-size:10.0pt;color:#006363'>Your Architecture
2030 Partner</span><span style='color:#006363'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt'>255 South Orange Avenue,
Suite 1600<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt'>Orlando, FL 32801-3463<o:p></o:p></span></p>
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