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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Dear Arnaud,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">“F” means front, “B” means back, right!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">In case of DOE, front side is facing exterior, back is facing to interior side (or in your case first column is the exterior glazing layer, second
column is the interior glazing layer). It is also defined like this in the software WINDOW.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Therefore, also Rfsol is counting for the reflection part (only of glazing) of the glazing side facing exterior.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Concerning window geometries in the window manager: so far as I know this values should correspond to the values written in the doe-file. The “real”
geometry of the window has to be entered later as you mentioned by sketchup or manually in the Zone window. So TRNSYS uses the sketchup geometry for calculating the window gains/losses.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Kind regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Martin<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org]
<b>Im Auftrag von </b>Arnaud Candaele<br>
<b>Gesendet:</b> Dienstag, 24. Juni 2014 16:35<br>
<b>An:</b> trnsys-users@cae.wisc.edu<br>
<b>Betreff:</b> [TRNSYS-users] Question about windows properties..<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hi all,<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">I know this kind of question has already been asked, but I can't seem to find a complete answer, so here it is again, maybe someone can help :<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span lang="EN-US">I'm using a<span style="color:#1F497D">
</span>window type in a building simulation, and for this I choose a window from the library "/American/w4-lib", ID 2306.
</span>Thiw window type has 2 layers of glass separated by a layer of gas.<span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">My question is regarding the Emissivity properties that can be read :<o:p></o:p></p>
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<p class="MsoNormal">Emis F 0.840 0.060<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Emis B 0.840 0.840<o:p></o:p></p>
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<p class="MsoNormal">I just want to be sure of what that means : I guess "F" and "B" are for "front" and "back", but which of these sides is actually towards the interior of the building ?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Also, which window is on the interior side, and which one on the exterior side (1st or second column ?) ?<o:p></o:p></p>
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<p class="MsoNormal">I think that for exterior walls, TRNSYS uses "back" to describe the "outer" face of the wall (outside). But I also read somewhere (..) that for instance "Rfsol" (so "front" reflectance) in the window description is also for the exterior
facing side of the window.. In the end, I don't know if "front" is supposed to mean "interior facing side" or "exterior facing side".<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Also, in the window description, there are dimensions (width, height). In the Window Type Manager, there are also dimensions taht you can enter ("For 1 glazing module", just below "slope of window"). Finally,
in the different zones of my building where I actually use this type of window, there is an area which correspond to the area of the window I drew in sketchup.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">==> which one of these area is actually used in TRNSYS computation?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Any help would be greatly appreciated ! I've been looking in WINDOW manual, as wel in the TRNSYS manuals, I can't find anything in there...<o:p></o:p></p>
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<p class="MsoNormal">Thanks ,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Arnaud.<o:p></o:p></p>
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