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<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Julie, Knut,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Thanks a lot for the answers.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>So the formula a thought, is correct.<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span lang=EN-US style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Kind regards,<o:p></o:p></span></p>
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color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:black'>Joke De Beuckelaer<o:p></o:p></span></p>
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color:black'>project engineer mep<o:p></o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<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"'> Julie Lestrade
[mailto:lestrade.julie@cedre-sophia.com] <br>
<b>Sent:</b> donderdag 4 november 2010 10:28<br>
<b>To:</b> Knut Erik Enerstvedt; Joke De Beuckelaer<br>
<b>Cc:</b> trnsys-users@cae.wisc.edu<br>
<b>Subject:</b> Re : Re: [TRNSYS-users] external shading factor (multizone
building)<o:p></o:p></span></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
<h1 style='margin-bottom:.75pt;background:#EEEEEE'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black;font-weight:normal'>I asked about
this before and I'm forwarding you the answer I got and was valid when i tested
the influence of my blinds on the heating/cooling energy necessary for the
building.</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><o:p></o:p></span></h1>
<p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>hope this is useful.<b><br>
<br>
</b>Best regards,<b><br>
<br>
</b></span><span style='font-size:10.0pt'><o:p></o:p></span></p>
<h1 style='margin-bottom:.75pt;background:#EEEEEE'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Message original Re : Re:
[TRNSYS-users] Blinds<o:p></o:p></span></h1>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black;background:white'>De : </span></b><span style='font-size:
10.0pt;font-family:"Arial","sans-serif";color:black;background:white'>Adrien
JEZEQUEL - ITF <a href="mailto:a.jezequel@itf.biz"><a.jezequel@itf.biz></a><br>
<b>A : </b><a href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a><br>
<b>Date</b> : 2010-06-22 15:44:27</span><span style='font-size:10.0pt'><br>
<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Dear
Julie,<br>
<br>
I suggest you to put an equation tool outside of Type56. In that equation tool,
ESHAD (</span><span style='font-size:10.0pt'>the ratio of non transparent area
of the shading device to the whole glazing area, as defined in TRNBUILD</span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>) will be calculated
depending on blinds position. <br>
If you consider that</span><span style='font-size:10.0pt'> :<o:p></o:p></span></p>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>GWINDOW
= solar shading factor of window only, which is constant (60% for example,
which means that 60% of solar radiation goes through the window)</span><span
style='font-size:10.0pt'><o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l0 level1 lfo1'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>FS
= solar shading factor of your system Window + Shadings. <br>
FS depends on blinds use, </span><span style='font-size:10.0pt'><o:p></o:p></span></li>
<ul type=circle>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l0 level2 lfo1'><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>if blinds are used, FS = 0.2 (for example) </span><span
style='font-size:10.0pt'><o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l0 level2 lfo1'><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>if not, FS = GWINDOW</span><span style='font-size:
10.0pt'><o:p></o:p></span></li>
</ul>
</ul>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>In
that way, FS is calculated as the product between :</span><span
style='font-size:10.0pt'> <o:p></o:p></span></p>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l2 level1 lfo2'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>the
amount of solar energy which pass through external shading device when
they're used => (1-ESHAD)</span><span style='font-size:10.0pt'><o:p></o:p></span></li>
<ul type=circle>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l2 level2 lfo2'><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>ESHAD = 0 means no shading</span><span
style='font-size:10.0pt'><o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l2 level2 lfo2'><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>ESHAD = 1 means zero transmission</span><span
style='font-size:10.0pt'><o:p></o:p></span></li>
</ul>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l2 level1 lfo2'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>and
window solar shading factor (GWINDOW) </span><span style='font-size:10.0pt'><o:p></o:p></span></li>
<ul type=circle>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;mso-list:l2 level2 lfo2'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>FS = GWINDOW.(1-ESHAD)</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
(1)</span><span style='font-size:10.0pt'><br>
Regarding (1)</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>
</span></b><span style='font-size:10.0pt'><br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>ESHAD
= (1- FS/GWINDOW</span></b><b><span style='font-size:10.0pt'>)
</span></b><span style='font-size:10.0pt'>(2)<o:p></o:p></span></li>
</ul>
</ul>
<p class=MsoNormal><span style='font-size:10.0pt'>No you have a relation
between ESHAD, FS and Window G-Value :<o:p></o:p></span></p>
<ul type=disc>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>When
blinds are up, solar radiation are only blocked by the window solar
shading factor => FS = GWINDOW and ESHAD = 0.</span><span
style='font-size:10.0pt'><o:p></o:p></span></li>
<li class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
mso-list:l1 level1 lfo3'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>When
blinds are down, solar radiation are blocked by window <b>and</b> external
shadings => FS = 0.2 (for the whole system in that example), ESHAD =
(1-0.2/0.6)</span><span style='font-size:10.0pt'> = 0.667 that means that
66.67% non transparent area of the shading device to the whole glazing
area)<br>
Regarding (1) FS = 0.5*(1-0.0.667) = 0.5*0.4 = 0.2 which is the total
shading factor you want.<o:p></o:p></span></li>
</ul>
<p class=MsoNormal><span style='font-size:10.0pt'>Best<o:p></o:p></span></p>
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<h1 style='margin-bottom:.75pt;background:#EEEEEE'><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black'>Message original Re : Re:
[TRNSYS-users] external shading factor (multizone building)<o:p></o:p></span></h1>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:black;background:white'>De : </span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;
background:white'>Knut Erik Enerstvedt <knut.erik.enerstvedt@gmail.com><br>
<b>A : </b>joke.d@vkgroup.be<br>
<b>Date</b> : 2010-11-04 09:33:18</span><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt'>Joke,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
think you should only consider the g-value of the shading device when
calculating external shading factor. The g-value<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>of
the window is handled separately. So if the g-value of your shading device is
0.23, the external shading<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>factor
becomes 1 - 0.23 = 0.77.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Someone
please correct me if I am wrong.<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Kind
regards,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Knut
Erik Enerstvedt<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt'>>Dear trnsys-users,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'>>I’ve a question about how to calculate
the external shading factor (multizone building). Is the following correct?</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'>>Suppose I’ve a window with a g-value of
0,37 and a g-value of 0,23 (external shading device + window).</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'>>The external shading factor becomes
then: 1 – (gwindow+shadingdevice/ gwindow) = 1- (0.23/0.37) = 0.38</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'>>Kind regards,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
lang=EN-US style='font-size:9.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:black'>>Joke De Beuckelaer</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:9.0pt;color:black'>>project engineer mep</span><o:p></o:p></p>
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