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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Vikram,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>There
is a number of tools that allow you to assess the DSF performance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Simple,
non commercial (freeware) tools you can use are WIS 3 (for steady state boundary
conditions) and Parasol for dynamic calculations (tool also that implements –
if I am not wrong - the 15099 standard). <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>As
to dynamic thermal modelling tools you can use Energy Plus, or other
commercially available tools; I have worked in the past with IDA ICE 3.0 (there
is the newer version IDA ICE 4.0 available) that will allow you to assess DSF
performance. In fact, I found IDA ICE very useful since I could assess the
performance of several DSF types (naturally ventilated, mechanically
ventilated, hybrid, airflow windows) and geometries (box windows, multi storey
facades (see PhD thesis “Single and Double Skin Glazed Office Buildings.
Analyses of Energy Use and Indoor Climate” <a
href="http://www.ebd.lth.se/fileadmin/energi_byggnadsdesign/images/Publikationer/Bok_Dokt_avhandling_HP_G5.pdf">http://www.ebd.lth.se/fileadmin/energi_byggnadsdesign/images/Publikationer/Bok_Dokt_avhandling_HP_G5.pdf</a>).
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>DSF
software validation was carried out under the IEA Task 34 Task (<a
href="http://www.iea-shc.org/task34/">http://www.iea-shc.org/task34/</a>). <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>A
description of methods and tools to assess DSF performance is extensively
described under a literature review (<a
href="http://www.iea-shc.org/publications/downloads/Task34-Double_Skin_Facades_A_Literature_Review1.pdf">http://www.iea-shc.org/publications/downloads/Task34-Double_Skin_Facades_A_Literature_Review1.pdf</a>).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>I
hope this helps.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Best
regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Harris
Poirazis<o:p></o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-family:"Times New Roman","serif";
color:black'>Harris Poirazis</span></b><b><span lang=EN-US style='font-family:
"Times New Roman","serif";color:black'><o:p></o:p></span></b></p>
<p class=MsoNormal style='text-align:justify'><span lang=EN-US
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Sami,
Vikram<br>
<b>Sent:</b> 11 November 2010 14:59<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Is there a quick model for double skins facades?<o:p></o:p></span></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-US>We are doing a project in a pretty cold
climate. The project design has a really big glass façade facing south. One of
the ideas to reduce conductive heat loss is to create a double skin façade on
the south side.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Now I realize that this is going to take a
fair amount of analysis work to design it properly. What I was wondering is if
there is a quick analysis tool/methodology to tell if this is even feasible to
go into more detailed analysis. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Any help would be much appreciated<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><b><span lang=EN-US
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>Vikram Sami</span></b><span
lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>,
LEED AP<o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span lang=EN-US
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>Sustainable
Design Analyst<o:p></o:p></span></p>
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