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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Both vent fan usage and cooling increase
significantly. From the hourly reports, it’s not looking like it’s
a balancing issue in terms of fans vs cooling.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Heating does decrease with the ERV. The
fan energy increase seems to make sense in principle, but I’m still not
sure why there are hours when the cooling setpoint (75 deg F) is being used in the
model with the ERV where the heating setpoint (70) is being used in the non-erv
model.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>-Corinne<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Steve Mignogna [mailto:smignogna@gmail.com]
<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, December 27, 2007
3:44 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Corinne Benedek<br>
<b><span style='font-weight:bold'>Cc:</span></b>
<bldg-sim@lists.onebuilding.org><br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] energy
recovery and zone setpoints</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>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. <o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Sent from my mobile wireless device.<o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
On Dec 27, 2007, at 2:34 PM, "Corinne Benedek" <<a
href="mailto:corinne.benedek@arup.com">corinne.benedek@arup.com</a>> wrote:<o:p></o:p></span></font></p>
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<div><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="PostalCode"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="State"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="country-region"><u1:smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"><!--[if gte mso 9]><xml>
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<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'>Hello All,<u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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'>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. <u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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'>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? <u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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'>Any ideas
would be very much appreciated.<u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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'>Thanks!<u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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'>Corinne
Benedek<u1:p></u1:p></span></font><o:p></o:p></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'><u1:p> </u1:p></span></font><o:p></o:p></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 u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><ns0:country-region u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><st1:country-region u4:st="on"><st1:place u4:st="on"><st1:country-region
w:st="on"><st1:place w:st="on">Americas</st1:place></st1:country-region></st1:place></st1:country-region><br>
</ns0:country-region></ns0:place><ns0:place u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><ns0:city u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><st1:place u4:st="on"><st1:city u4:st="on"><st1:place
w:st="on"><st1:City w:st="on">New York</st1:city></st1:place></ns0:city></st1:City>,
<ns0:state u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><st1:state u4:st="on"><st1:State
w:st="on">NY</st1:state></ns0:state></st1:State> <ns0:postalcode u4:insauthor="Arup" u4:insdate="2007-12-27T14:29:00Z" u4:endinsauthor="Arup" u4:endinsdate="2007-12-27T14:29:00Z"><st1:postalcode u4:st="on"><st1:PostalCode
w:st="on">10013</st1:postalcode></st1:PostalCode></st1:place><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><a href="http://www.arup.com/">http://www.arup.com/</a></span></font><u1:p></u1:p><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=2 face="Times New Roman"><u1:p><span style='font-size:10.0pt'> </span></u1:p></font><o:p></o:p></p>
</div>
<pre><font size=2 face="Courier New"><span style='font-size:10.0pt'>____________________________________________________________<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Electronic mail messages entering and leaving Arup business<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>systems are scanned for acceptability of content and viruses<o:p></o:p></span></font></pre></div>
</blockquote>
</u1:smarttagtype></u1:smarttagtype></u1:smarttagtype></u1:smarttagtype></u1:smarttagtype>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>_______________________________________________<br>
Bldg-sim mailing list<br>
<a href="mailto:Bldg-sim@lists.onebuilding.org">Bldg-sim@lists.onebuilding.org</a><br>
<a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><o:p></o:p></span></font></p>
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