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<DIV dir=ltr align=left><SPAN class=958002708-16022010><FONT face=Arial
color=#0000ff size=2>Steve,</FONT></SPAN></DIV>
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color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958002708-16022010><FONT face=Arial
color=#0000ff size=2>My understanding is that deadband is not the same as
throttle range. Deadband is the temperature range between the system
being cooling to heating. See attached to clarify. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958002708-16022010><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958002708-16022010><FONT face=Arial
color=#0000ff size=2>Regards</FONT></SPAN></DIV><!-- Converted from text/rtf format -->
<P><SPAN lang=es><SPAN class=958002708-16022010><FONT face=Arial color=#0000ff
size=2>Francisco</FONT></SPAN></SPAN></P>
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<FONT face=Tahoma size=2><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>STEVE
SAMENSKI<BR><B>Sent:</B> martes, 16 de febrero de 2010 1:05<BR><B>To:</B> Demba
Ndiaye; equest-users@lists.onebuilding.org; John Aulbach<BR><B>Subject:</B> Re:
[Equest-users] Reproducing Unmet Hours<BR></FONT><BR></DIV>
<DIV></DIV><FONT face=Arial><SPAN style="FONT-SIZE: 12pt">John — thanks for the
tip on the throttling range. I was able to reduce the unmet hours by
increasing the range from 2 degrees to 4 degrees in the perimeter
zones.<BR><BR>Demba — As I read the help file, the throttling range is the same
as the dead band described in in 6.4.3.1.2 of Standard 90.1.<BR><BR>“The number
of degrees that room temperature must change in order to go from full heating to
zero heating or from full cooling to zero cooling. The zone temperature heating
or cooling set point is assumed to be at the midpoint of the throttling range.
This keyword is appropriate to THERMOSTAT-TYPE = PROPORTIONAL or REVERSE-ACTION
only. “<BR><BR>Since the heating or cooling setpoint is assumed to be at the
midpoint of the throttling range, then a throttling range of 10 degrees would
correspond to a dead band of 5 degrees. Maybe tomorrow I’ll see what
that does to my results.<BR><BR>Steve Samenski, PE, LEED AP<BR><A
href="http://equest-diary.livejournal.com/">http://equest-diary.livejournal.com/</A><BR><BR>On
2/15/10 3:42 PM, "Demba Ndiaye" <<A
href="Demba.Ndiaye@setty.com">Demba.Ndiaye@setty.com</A>>
wrote:<BR><BR></SPAN></FONT>
<BLOCKQUOTE><FONT color=#1f497d><FONT
face="Calibri, Verdana, Helvetica, Arial"><SPAN style="FONT-SIZE: 11pt">By
dead band, do you mean the throttling range that eQuest defines? If so, there
is a limit on how much you can increase it, due to the 5F minimum dead band
requirements of the
90.1.<BR> <BR>Demba.<BR> <BR></SPAN></FONT></FONT><FONT
face=Arial><SPAN style="FONT-SIZE: 12pt"><BR></SPAN></FONT><FONT size=2><FONT
face="Tahoma, Verdana, Helvetica, Arial"><SPAN
style="FONT-SIZE: 10pt"><B>From:</B> <A
href="equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</A>
[<A
href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</A>]
<B>On Behalf Of </B>John Aulbach<BR><B>Sent:</B> Sunday, February 14, 2010
12:57 AM<BR><B>To:</B> STEVE SAMENSKI; <A
href="equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR><B>Subject:</B>
Re: [Equest-users] Reproducing Unmet Hours<BR></SPAN></FONT></FONT><FONT
face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><BR></SPAN></FONT><SPAN
style="FONT-SIZE: 12pt"><FONT face=Arial><BR></FONT><FONT
face="Times New Roman">Steve:<BR></FONT><FONT face=Arial><BR></FONT><FONT
face="Times New Roman"><BR></FONT><FONT face=Arial><BR></FONT><FONT
face="Times New Roman">The NO. 1 thing I have found effective is to increase
the deanband in the thermostat. I don't thin USGBC has any problem with
that.<BR></FONT><FONT face=Arial><BR></FONT><FONT
face="Times New Roman"><BR></FONT><FONT face=Arial><BR></FONT><FONT
face="Times New Roman">It also depends on wheather it is COOLING or HEATING
unmet housers. Sometimes, you haven't provided a reheat vaule.<BR></FONT><FONT
face=Arial><BR></FONT><FONT face="Times New Roman"><BR></FONT><FONT
face=Arial><BR></FONT><FONT face="Times New Roman">Try those
first.<BR></FONT><FONT face=Arial><BR></FONT><FONT
face="Times New Roman"><BR></FONT><FONT face=Arial></FONT></SPAN>
<P align=center><FONT size=2><FONT
face="Tahoma, Verdana, Helvetica, Arial"><SPAN style="FONT-SIZE: 10pt">
<HR align=center width="100%" SIZE=1>
</SPAN></FONT></FONT>
<P><FONT size=2><FONT face="Tahoma, Verdana, Helvetica, Arial"><SPAN
style="FONT-SIZE: 10pt"><B>From:</B> STEVE SAMENSKI <<A
href="steve@thespinnakergroupinc.com">steve@thespinnakergroupinc.com</A>><BR><B>To:</B>
<A
href="equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A><BR><B>Sent:</B>
Sat, February 13, 2010 2:59:00 PM<BR><B>Subject:</B> [Equest-users]
Reproducing Unmet Hours<BR></SPAN></FONT></FONT><FONT
face="Times New Roman"><SPAN style="FONT-SIZE: 12pt"><BR></SPAN></FONT><SPAN
style="FONT-SIZE: 12pt"><FONT face=Arial>It seems I spend a great deal of time
with eQuest trying to reduce unmet hours in a model. One thing I’ve
tried is having eQuest produce an hourly report of a problem zone’s
temperature and T-stat setting, exporting the data to Excel and then searching
it for patterns. This approach has a few problems:<BR></FONT></SPAN>
<OL>
<LI><SPAN style="FONT-SIZE: 12pt"><FONT face=Arial>I can barely figure out
how to create the hourly report I’m looking for. The reporting
function (in the Detailed Data Edit mode, under Project & Site, Hourly
Reports) isn’t very intuitive, and I can’t find any documentation on it.
Has anyone found the docs on this? (I’m currently working
through the relevant sections of the DOE 2-2 Dictionary, trying to cross
reference between the inputs to eQuest and the BDL file generated from those
inputs. I’m just wondering if there’s a short-cut somewhere.)
</FONT></SPAN>
<LI><SPAN style="FONT-SIZE: 12pt"><FONT face=Arial>Once I get the data in
Excel and do some filtering, I can never get the exported data to match the
unmet hours found in report SS-R. The Excel analysis seems to always
overstate the unmet hours. Has anyone had any luck reproducing the
SS-R values? Any ideas? </FONT></SPAN>
<LI><SPAN style="FONT-SIZE: 12pt"><FONT face=Arial>I’d like to hear other
user’s experience. Do you find that resolving unmet hours is a
significant part of your modeling time? <BR></FONT></SPAN></LI></OL><FONT
size=1><FONT face="Verdana, Helvetica, Arial"><SPAN
style="FONT-SIZE: 9pt"><BR></SPAN></FONT></FONT><FONT face=Arial><SPAN
style="FONT-SIZE: 12pt">Steve Samenski, PE, LEED AP</SPAN></FONT><SPAN
style="FONT-SIZE: 12pt"><FONT face="Times New Roman">
<BR> <BR></FONT><FONT face=Arial><BR>
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