<p class="MsoNormal"><span style="font-size: 9pt;">Joke,</span></p><p class="MsoNormal"><br></p><p class="MsoNormal">I think you should only consider the g-value of the shading device when calculating external shading factor. The g-value</p>
<p class="MsoNormal">of the window is handled separately. So if the g-value of your shading device is 0.23, the external shading</p><p class="MsoNormal">factor becomes 1 - 0.23 = 0.77.</p><p class="MsoNormal"><br></p><p class="MsoNormal">
Someone please correct me if I am wrong.</p><p class="MsoNormal"><br></p><p class="MsoNormal">Kind regards,</p><p class="MsoNormal">Knut Erik Enerstvedt<br></p><p class="MsoNormal"><br><span style="font-size: 9pt;"></span></p>
<p class="MsoNormal"><span style="font-size: 9pt;"><br></span></p><p class="MsoNormal"><span style="font-size: 9pt;">>Dear
trnsys-users,</span></p>
<p class="MsoNormal"><span style="font-size: 9pt;"> </span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US">>I’ve
a question about how to calculate the external shading factor (multizone
building). Is the following correct?</span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US">>Suppose
I’ve a window with a g-value of 0,37 and a g-value of 0,23 (external
shading device + window).</span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US">>The
external shading factor becomes then: 1 – (gwindow+shadingdevice/ gwindow)
= 1- (0.23/0.37) = 0.38</span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US">>Kind
regards,</span></p>
<p class="MsoNormal"><span style="font-size: 9pt;" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size: 9pt; color: black;">>Joke De Beuckelaer</span></p>
<p class="MsoNormal"><span style="font-size: 9pt; color: black;">>project engineer mep</span></p>