<html><body bgcolor="#FFFFFF" lang="EN-US" link="blue" vlink="purple"><div>In terms of the sub uses what decreases? Sometimes your fan energy will increase so much that it over shadows the decrease in cooling and heating. <br><br><div><br class="webkit-block-placeholder"></div>Sent from my mobile wireless device.</div><div><br>On Dec 27, 2007, at 2:34 PM, "Corinne Benedek" <<a href="mailto:corinne.benedek@arup.com">corinne.benedek@arup.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div><o:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PostalCode">
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<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Hello All,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">I have a question about the way eQuest / DOE 2.2 decided
whether it should be using the heating or cooling zone setpoint for a
particular hour. <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">I am modeling a PSZ system with energy recovery (enthalpy
wheel with mixed air reset and “modulate hx” capacity control) and
am finding that when I remove the energy recovery from the model, energy use
decreases. When I look at the hourly reports, there are a number of hours
where the “no erv” model is using a heating setpoint and the “erv”
model is using a cooling setpoint for the zone particularly in the winter. Any
ideas about how this setpoint gets chosen and why the ERV would be affecting
it? <o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Any ideas would be very much appreciated.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Thanks!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial">Corinne Benedek<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><font size="2" face="Arial"><span style="font-size:10.0pt;font-family:Arial">__________________________<br>
Graduate Mechanical Engineer<br>
LEED AP, EIT<br>
<br>
Arup<br>
155 Avenue of the <ns0:place w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><ns0:country-region w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><st1:country-region w:st="on"><st1:place w:st="on">Americas</st1:place></st1:country-region><br>
</ns0:country-region></ns0:place><ns0:place w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><ns0:city w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><st1:place w:st="on"><st1:city w:st="on">New
York</st1:city></st1:place></ns0:city>, <ns0:state w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><st1:state w:st="on">NY</st1:state></ns0:state>
<ns0:postalcode w:insauthor="Arup" w:insdate="2007-12-27T14:29:00Z" w:endinsauthor="Arup" w:endinsdate="2007-12-27T14:29:00Z"><st1:postalcode w:st="on">10013</st1:postalcode><br>
</ns0:postalcode></ns0:place>Telephone: 212-229-2669<br>
Fax: 212-229-1056<br>
Direct: 212-897-1323<br>
Web: <a href="http://www.arup.com/"><a href="http://www.arup.com/">http://www.arup.com/</a></a></span></font><o:p></o:p></p>
<p class="MsoNormal"><font size="2" face="Times New Roman"><o:p> </o:p></font></p>
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