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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'>Thanks for the suggestion! – but interestingly
enough, I do already have Mixed Air Reset as my setting. <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'>Any idea what mechanism it is that chooses
which setpoint to follow? I can’t seem to find any patterns that suggest
what is happening.<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'>Thanks!<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'>
mike@andelmanlelek.com [mailto:mike@andelmanlelek.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, December 27, 2007
4:10 PM<br>
<b><span style='font-weight:bold'>To:</span></b> Corinne Benedek<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>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><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'>If you have Make-up Air Temp Ctrl at the
default (floating), you will be delivering warmer air, driving the space to the
cooling setpoint and engaging mechanical cooling. Recommend changing this
to “mixed air reset”, that way you will have normal economizer
operation.<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'>Mike<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'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Corinne Benedek<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, <st1:date
Year="2007" Day="27" Month="12" ls="trans" w:st="on">December 27, 2007</st1:date>
<st1:time Minute="56" Hour="15" w:st="on">3:56 PM</st1:time><br>
<b><span style='font-weight:bold'>To:</span></b> Steve Mignogna<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>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><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'>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>
<div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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:<st1:PersonName w:st="on">smignogna@gmail.com</st1:PersonName>] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, <st1:date
Year="2007" Day="27" Month="12" ls="trans" w:st="on">December 27, 2007</st1:date>
<st1:time Minute="44" Hour="15" w:st="on">3:44 PM</st1:time><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>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<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>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<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>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'><br>
On <st1:date Year="2007" Day="27" Month="12" ls="trans" w:st="on">Dec 27, 2007</st1:date>,
at <st1:time Minute="34" Hour="14" w:st="on">2:34 PM</st1:time>, "Corinne
Benedek" <<a href="mailto:corinne.benedek@arup.com">corinne.benedek@arup.com</a>>
wrote:<o:p></o:p></span></font></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt' type=cite>
<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:place
w:st="on"><st1:country-region u4_x003a_st="on" w:st="on">Americas</st1:country-region></st1:place><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:city u4:st="on"><st1:place
w:st="on"><st1:City w:st="on">New York</st1:city></ns0:city></st1:place></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></ns0:postalcode></st1:PostalCode></st1:place><br>
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>
<div>
<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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