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<TITLE>Re: [Equest-users] Reproducing Unmet Hours</TITLE>
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<FONT FACE="Arial"><SPAN STYLE='font-size:12pt'>Francisco — thanks for responding. Yes, Report SS-O gives you an hourly summary. The operating hours are divided into 5 degree bins, and this can’t be changed. I’ve found SS-O useful in two cases:<BR>
</SPAN></FONT><OL><LI><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'>Diagnosing a case where a unit is undersized. (I work in a cooling climate.) SS-O will show a nice “bell curve” peaking at or just past the hottest part of the day.
</SPAN></FONT><LI><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'>Diagnosing an instance where the AC units aren’t starting up early enough in the morning.<BR>
</SPAN></FONT></OL><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'><BR>
The situation with my current model is a bit different. The design engineer has placed two thermal zones on opposite exposures (east and west) of the building. I can’t get the system satisfied, despite the fact that it’s large enough. Whichever zone has the T-stat is mostly (but not completely) satisfied. I believe the two zones won’t be happy on the same AC, so I wanted to prove that with an hour by hour analysis, contrasting the peak temperatures for each zone.<BR>
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I’m going to try expanding the throttling range as recommended by John A. in a previous response. However, I’m not completely sure that each thermal zone can have it’s own T-stat.<BR>
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Steve Samenski, PE, LEED AP<BR>
<a href="http://equest-diary.livejournal.com/">http://equest-diary.livejournal.com/</a><BR>
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On 2/15/10 3:36 AM, "Francisco Aguirre" <<a href="Francisco.Aguirre@arup.com">Francisco.Aguirre@arup.com</a>> wrote:<BR>
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</SPAN></FONT><BLOCKQUOTE><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'><FONT COLOR="#0000FF">Steve<BR>
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<FONT COLOR="#0000FF">As far as I know you get an hourly temperature overview of your conflict zone in the SS-O report of the Simulation Output<BR>
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<FONT COLOR="#0000FF">Regards,<BR>
</FONT><B>Francisco Aguirre (Curro)<BR>
</B>Ingeniero Sostenibilidad<BR>
Alcala 54, 28014 Madrid<BR>
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<B>F</B> +34 91 521 85 75<BR>
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</FONT></SPAN><FONT COLOR="#008000"><FONT SIZE="6"><FONT FACE="Webdings"><SPAN STYLE='font-size:24pt'>P</SPAN></FONT></FONT></FONT><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'> </SPAN></FONT><SPAN STYLE='font-size:12pt'><FONT COLOR="#008000"><FONT FACE="Verdana, Helvetica, Arial">Please consider the environment before printing this e-mail</FONT></FONT><FONT FACE="Times New Roman"> <BR>
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<HR ALIGN=CENTER SIZE="3" WIDTH="100%"></FONT><FONT FACE="Tahoma, Verdana, Helvetica, Arial"><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>STEVE SAMENSKI<BR>
<B>Sent:</B> sábado, 13 de febrero de 2010 23:59<BR>
<B>To:</B> <a href="equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><BR>
<B>Subject:</B> [Equest-users] Reproducing Unmet Hours<BR>
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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>
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</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>
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</SPAN></FONT></FONT><FONT FACE="Arial"><SPAN STYLE='font-size:12pt'>Steve Samenski, PE, LEED AP <BR>
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