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<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2>Check
out<SPAN class=187260122-26082008> "Computerized Building Energy Simulation
Handbook" by James Waltz... there's a click-through to Amazon.com on <A
href="http://elcca-exchange.blogspot.com/">my blog</A> for this fundamental
energy modeler's reference manual. An entire chapter is devoted to
model calibration. In addition, there are numerous quantitative and
anecdotal tips for improving the quality of and reducing the time required to
build energy models.</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008>For an example related to model calibration, you may
find that only a few or perhaps no data loggers are required -- setting up trend
logs, taking instantaneous branch circuit amperage readings (for relatively
constant load circuits such as lighting) and accessing existing building
schedule information resident in a modern EMCS may be sufficient.
</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008>The goal, as Chris stated, is for your model to be
within <FONT size=4><FONT size=2>± </FONT></FONT>5% of actual energy consumption
as documented by the utility bills, month-to-month. Chris is also spot-on
about the iterative nature of the process... it's easy to underestimate the
actual time commitment required.</SPAN></FONT></FONT></FONT></DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=187260122-26082008>Brandon Nichols, PE, LEED
AP<BR>Mechanical<BR>HARGIS ENGINEERS<BR>600 Stewart St<BR>Suite 1000<BR>Seattle,
WA 98101<BR>d | 206.436.0400 c | 206.228.8707<BR>o | 206.448.3376 f |
206.448.4450<BR><A
href="http://www.hargis.biz">www.hargis.biz</A><BR></SPAN></FONT></FONT></FONT></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<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>Chris
Mullinax<BR><B>Sent:</B> Wednesday, August 27, 2008 1:26 PM<BR><B>To:</B>
bldg-sim@lists.onebuilding.org<BR><B>Subject:</B> [Bldg-sim] Simulation
Calibration<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal>I have used equest a number of times to show clients the
relative effects of changing from standard efficiency to higher efficiency
equipment or say from T8 to T5 lighting systems. Generally, pretty basic models.
<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I now have a client a (a municipality) that is interested in
“calibrating” the models to get more precise information. <o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I’ve heard the term “calibration” as it relates to models,
and I think I understand the concept, but how is this actually done? Is it
just a matter of improving the details of the model, or is there testing of
walls and other systems to determine actual installed values?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Are there any good articles out there on this
topic?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>All help appreciated.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Thanks,</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">Chris Mullinax, P.E.
<SPAN style="COLOR: #00b050">LEED AP</SPAN></SPAN><o:p></o:p></P>
<P class=MsoNormal> <o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">pn:
770-387-1334</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'">fx:
770-387-1383</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Arial','sans-serif'"><A
href="mailto:chris@mullinaxsolutions.com"><SPAN
style="COLOR: blue">chris@mullinaxsolutions.com</SPAN></A></SPAN><o:p></o:p></P>
<P class=MsoNormal><A href="http://www.mullinaxsolutions.com"><SPAN
style="COLOR: blue">www.mullinaxsolutions.com</SPAN></A><o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
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