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<p>Thanks for this summary Bill!</p>
<p>On this topic, over the past few years we've run into a few bugs
with the WINDOW -> eQUEST import. <br>
</p>
<ul>
<li>In eQ v3.63 and 3.64, the import of WINDOW data neglected to
populate the FILM-CONDS keyword when creating the custom
GLASS-TYPE-CODE (G-T-C). This resulted in much lower U_cog
values than expected. We tested import with v3.65 and this bug
appears to have been fixed. <br>
</li>
<li>If used for switchable glazing, the GLASS-TYPEs referenced by
WINDOW objects must be listed in the input file in consecutive
order. Otherwise, a BDL error will result. Not sure if this has
been fixed in v3.65<br>
</li>
<li>If used for switchable glazing, the G-T-Cs used must have an
numeric integer name that is >1000. Otherwise, a BDL error
will result. Not sure if this has been fixed in v3.65</li>
</ul>
<br>
- David<br>
<br>
<div class="moz-cite-prefix">On 12/13/2018 12:07 PM, Bishop, Bill
via Equest-users wrote:<br>
</div>
<blockquote type="cite"
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<div class="WordSection1">
<p class="MsoNormal">Tip-of-the-month: Creating custom glass
types using the latest WINDOW software.<o:p></o:p></p>
<p class="MsoNormal">The Window Manufacturers Window Library
that comes with eQUEST is now 12 years old. Today’s
Zero-Energy and Passive House projects have window assembly
performance outside the available range of library selections.
eQUEST has a built-in tool for importing glass type data. I
have finally figured out how to use it! Here’s the process I
followed:<o:p></o:p></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Download and
install WINDOW.
<a
href="https://windows.lbl.gov/tools/window/software-download"
moz-do-not-send="true">https://windows.lbl.gov/tools/window/software-download</a>
The built-in eQUEST library glass types were created in
WINDOW 5.2. I installed 7.6.04 instead of the newest beta
version.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Watch the
Glazing System tutorial and the Window with Generic Frame
tutorial (in that order) and download other documentation at
<a href="https://windows.lbl.gov/tools/window/documentation"
moz-do-not-send="true">https://windows.lbl.gov/tools/window/documentation</a><o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Open WINDOW.
Respond to the Update Manager which pops-up automatically.
(I updated the International Glazing Database (IGDB) to
version 63.)<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Watch the
tutorials in Step 2 and follow along.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Create a new
glazing system per the tutorial. When you “Calc”, the
results show you the COG U-factor, the VLT(Tvis) and the
SHGC/SC for the glazing only (no frame effects included).<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Create a new
window per the tutorial, using the glazing system. Note: I
don’t think it matters what you select for the frame type as
long as you use one of the first four which are standard
ASHRAE frames. You input the actual frame properties within
eQUEST.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Save and
Calc the window.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Click
“Report” and select “DOE-2” report type. (DOE-2 is not a
Report type option from the Glazing System Library. You have
to be within the Window Library.)<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Save the
.txt file in the Window folder within the eQUEST Data
folder. (Such as Documents -> eQUEST 3-65-7175 Data ->
Window)<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Open the
file with a text editor. EDIT THE FIRST LINE. The file will
not import properly into eQUEST if the first line starts
with “BERKELEY LAB WINDOW v7.6.4.0”. I don’t know which part
causes the error but it will work if you change the first
line to:<o:p></o:p></li>
</ol>
<p class="MsoListParagraph">Window 5.2 v5.2.12 DOE-2 Data File
: Multi Band Calculation<o:p></o:p></p>
<ol style="margin-top:0in" start="11" type="1">
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Save the
edited .txt file.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Open an
eQUEST model to use the new glass type.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">Go to Tools
-> Import Window4/5 Report File… and select the file you
saved in step 11.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">eQUEST asks
if you want to Reevaluate all components. Sure. Go crazy.<o:p></o:p></li>
<li class="MsoListParagraph"
style="margin-left:0in;mso-list:l0 level1 lfo1">A new Glass
Type Code is created, and a new Glass Type which uses the
new G-T-C.<o:p></o:p></li>
</ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I believe the above process will work with
any recent eQUEST version running either DOE-2.2 or DOE-2.3
but I’ve only tried it in build 7175, DOE-2.3.<o:p></o:p></p>
<p class="MsoNormal">The FRAME-WIDTH, FRAME-CONDUCT and
SPACER-TYPE will all alter the performance of a WINDOW in
eQUEST/DOE-2. See the LV-D and LV-H reports to see the impact
of the new glass type and frame properties. The spacer type
impacts window performance (as verified by BEPS/BEPU), but the
change doesn’t seem to appear in the LV-D and LV-H reports.<o:p></o:p></p>
<p class="MsoNormal">I am still learning the WINDOW software and
have not tried THERM or the other LBNL software that interacts
with it.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Yes, you can use the “Simplified” method to
define the glass type (TYPE = SHADING-COEF), which allows you
to use any values you want for shading coefficient, glass
conductance, visible transmittance and outside emissivity.
This gives less accurate solar heat gains, especially with
multipane and/or coated windows, and the conductance does not
vary with inside-to-outside temperature difference.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Have fun and pay it forward!<o:p></o:p></p>
<p class="MsoNormal">~Bill<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Franklin Gothic
Medium",sans-serif;color:black">William Bishop, PE,
BEMP, BEAP, CEM, LEED AP<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Senior
Energy Engineer<o:p></o:p></span></b></p>
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