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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></ns0:City></st1:place>, <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: http://www.arup.com/</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><o:p> </o:p></font></p>
</div>
<pre>____________________________________________________________
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