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<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2>Based on ASHRAE 90.1, you can only have 3.4% hours outside
of the throttling range (300 hrs) and only 50 hours difference between the
budget and proposed. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2>In the simulation file, report SS-R Zone Performance
Summary for_____ you can see what zone and how many hours
are under-cooled or under-heated. If it's just one rogue zone you can look at
that particular zone or system to see what might be the problem. Also, using the
hourly reports to see what is happening in the zone is helpful to diagnose.
</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2>good luck. </FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=697235316-13052009><FONT face=Arial
color=#0000ff size=2>Michelle </FONT></SPAN></DIV><BR>
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<FONT face=Tahoma size=2><B>From:</B> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Erin
Rowe<BR><B>Sent:</B> Wednesday, May 13, 2009 9:50 AM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] Throttling
Range<BR></FONT><BR></DIV>
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<P><FONT face=Arial size=2>When reviewing the BEPU output report, the "Percent
of Hours outside the throttling range" is noted. I have a couple of
questions regarding what this means and how to trouble shoot it:</FONT></P>
<UL>
<UL>
<LI><FONT face=Arial size=2>What would typically be the Max hours outside
the throttling range that would be considered acceptable? (e.g.
<10%?)</FONT>
<LI><FONT face=Arial size=2>If this value is greater than 10%, where is the
next place to look to find the source of the issue? Is this normally
due to undersizing/oversizing a system or zone?</FONT> </LI></UL></UL>
<P><FONT face=Arial size=2>I'd appreciate any input on this topic!</FONT> </P>
<P><FONT face=Arial size=2>Thanks,</FONT> </P>
<P><FONT face=Arial size=2>Erin</FONT> </P><pre>____________________________________________________________
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