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EnergyPlus will allow you to simulate interior window blinds and shades
(as well as exterior, and between glazing layers). On/off deployment
of the blinds or shades on a time step basis can be controlled in
several ways (see the WindowShadingControl input object). You will
have to define the solar and thermal characteristics of the blind or
shade (see the Material:WindowShade or Material:WindowBlind input
objects). Also see the EnergyPlus Engineering Reference documentation
for more detail on the calculation methods (Shaded Window under
Daylighting and Window Calculations, and Shading Device Thermal Model
under Window Heat Balance Calculation).<br>
<br>
Rob Hitchcock<br>
-- <br>
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<p class="MsoNormal"><span
style="font-family: "Monotype Corsiva"; color: black;">Robert
J. Hitchcock, Ph.D.<br>
Lawrence Berkeley National Laboratory<br>
<a class="moz-txt-link-abbreviated" href="mailto:RJHitchcock@lbl.gov">RJHitchcock@lbl.gov</a></span> </p>
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==============<br>
Alec Stevens wrote:<br>
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<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Hi,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Does anyone have any
source that documents the effect of (interior)
window blinds on solar heat gain?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">We are working on a
project with motorized blinds that would
respond to a photocell. The blinds are a fabric mesh that allows 40%
visible transmittance.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Has anyone used a
reliable factor to account for any
reduction in solar heat gain from this type of window blind?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Thanks for any info that
you may have!<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Sincerely,</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Alec Stevens, PE, LEED AP</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">DMI</span></font><o:p></o:p></p>
<p class="MsoNormal"><st1:address w:st="on"><st1:Street w:st="on"><font
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">450 Lexington St.</span></font></st1:Street><font
face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">, <st1:City w:st="on">Newton</st1:City>,
<st1:State w:st="on">MA</st1:State> <st1:PostalCode w:st="on">02466</st1:PostalCode></span></font></st1:address><o:p></o:p></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">p: 617-527-1525 x105 f:
617-527-6606</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">e: <a class="moz-txt-link-abbreviated" href="mailto:astevens@dmiinc.com">astevens@dmiinc.com</a></span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"><o:p> </o:p></span></font></p>
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