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<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2>Katie,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2>To the best of my knowledge, when you change the starting date/year in
eQUEST, the only thing you are changing is the day of the week that applies to
the first day of the TMY data. For example, 2010 begins on a Fri, which sets the
number of weekdays and weekends you have in each month/year (i.e. you'll
have 10 combined weekend days in Jan, rather than only 8 if this month would
have started on a Mon (year 20XX). If your building is unoccupied on the
weekend, you'll clearly use less energy in Jan 2010 than you would in year
20XX.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2>The weather conditions used to simulate that first day in both cases
will always be the same (set by the TMY data file)
regardless of the start year that is specified . If you are
comparing simulation runs for two different years I've found that this
generally will have a greater impact on monthly consumption
differences, but overall annual consumption should still be in the
ballpark.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2>If you want to test this, you can set 24/7/365 schedules
that do not change between weekday/weekend/holidays and I bet there will be
no impact of the start year on consumption (with the exception
of how eQUEST handles of Leap Years).</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial size=2>I
hope this helps.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
size=2>Regards,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=958534017-19012010>
<DIV class=Section1>
<P class=MsoNormal><B><SPAN style="FONT-FAMILY: 'GillSans Light'"><SPAN
style="mso-spacerun: yes"> </SPAN></SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'; mso-bidi-font-size: 10.0pt">Jonathan
M. Curtin, EIT, LEED</SPAN></B><SUP><SPAN
style="FONT-FAMILY: 'GillSans Light'">®</SPAN></SUP><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'; mso-bidi-font-size: 10.0pt">
AP</SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'"><BR></SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'; mso-bidi-font-size: 10.0pt"><SPAN
style="mso-spacerun: yes"> </SPAN></SPAN></B><B><SPAN
style="COLOR: #4d4d4d; FONT-FAMILY: 'GillSans Light'">Mechanical
Engineer</SPAN></B><STRONG><SPAN
style="FONT-FAMILY: 'GillSans Light'"><o:p></o:p></SPAN></STRONG></P>
<P class=MsoNormal><STRONG><SPAN style="FONT-FAMILY: 'GillSans Light'"><SPAN
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v:shapes="_x0000_i1025"><STRONG><o:p></o:p></STRONG></SPAN></B></P></DIV></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<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>Katie
Tuttle<BR><B>Sent:</B> Tuesday, January 19, 2010 11:05 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users]
Weather<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'">Does anyone know
where the weather data for eQuest comes from? Why I ask is because many
energy modeling applications have requirements on the type of weather data used
for simulation. What I’ve noticed is that if you change the “Run Period”
in eQuest (see screen shot below as found on the “Project & Site” tab in
detailed edit mode under “Simulation Options: Entire Year”), the energy use also
changes. I also found that if you set the run period to span over multiple
years, the output (even with units per year) adds all of the years
together. Is eQuest not using a TMY, TMY2 or TMY3 file to create its .BIN
files? If so, why would the year even matter since you usually want to be
using typical weather data? Do those years actually correspond to actual
data?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><IMG
id=Picture_x0020_5 height=298 src="cid:958534017@19012010-03C8"
width=387></SPAN><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"> <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'">My second question
(relating to this) is how to use DOEWth to convert TMY2 files to .BIN
files? Is this the only way to do this? <o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'">Thanks,<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial MT Black'">KATIE L. M.
TUTTLE</SPAN><SPAN
style="FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Arial MT Black'">
</SPAN><SPAN
style="FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">EI,
LEED<SUP>®</SUP> </SPAN><SPAN
style="FONT-SIZE: 8pt; COLOR: #566c11; FONT-FAMILY: 'Arial','sans-serif'">AP</SPAN><B><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'"><BR></SPAN></B><SPAN
style="FONT-SIZE: 9pt; COLOR: #566c11; FONT-FAMILY: 'Arial','sans-serif'">Mechanical
Designer<BR><BR><IMG id=Picture_x0020_1 height=52
alt=cid:image001.gif@01CA316F.E77202A0 src="cid:958534017@19012010-03CF"
width=200><BR><BR><B>Henderson Engineers, Inc.</B></SPAN><SPAN
style="FONT-SIZE: 9pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
8325 Lenexa Drive Lenexa, KS 66214<BR><B><SPAN
style="FONT-VARIANT: small-caps">dir</SPAN></B> 913 742 5508 <B><SPAN
style="FONT-VARIANT: small-caps">tel </SPAN></B>913 742 5000 <B><SPAN
style="FONT-VARIANT: small-caps">fax</SPAN> </B>913 742 5001</SPAN><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">
</SPAN><B><SPAN
style="FONT-SIZE: 8pt; COLOR: #566c11; FONT-FAMILY: 'Arial','sans-serif'"><A
href="http://www.hei-eng.com/"><SPAN
style="COLOR: #566c11">www.hei-eng.com</SPAN></A><o:p></o:p></SPAN></B></P></DIV>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 11pt; FONT-FAMILY: 'Calibri','sans-serif'"><o:p> </o:p></SPAN></P></DIV><BR>
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