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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Josh,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>There is a previous discussion on interior blinds in the
archives: <a
href="http://lists.onebuilding.org/htdig.cgi/bldg-sim-onebuilding.org/2007-June/005640.html">http://lists.onebuilding.org/htdig.cgi/bldg-sim-onebuilding.org/2007-June/005640.html</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>As for the savings, $25 per year seems about right. Interior
blinds <b>do not stop the solar radiation from entering the space</b> even
though the occupants might feel cooler with the blinds drawn.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>When the blinds are down, the occupant does not have the sun
shining directly on them, which makes them feel cooler than if the blinds were
up with the sun shining on them. However, when the blinds are down, the <b>sun
is still heating up the air space between the blinds and the glass</b>. That air
then eventually mixes with the air in the space, which still needs to be
cooled. eQUEST does not take into consideration that the hot air near the
windows might take a while to get to a thermostat across the room.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>We had a family residence that had tinted plastic blinds on the
inside of their floor to ceiling south facing windows. In the summers, the room
would get to 90+ even with the blinds drawn. We installed exterior blinds about
2 to 3 feet from the windows and the temperature never got above 80.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hope this helps.<o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal><span style='color:#1F497D'><br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Dana Troy</span></b><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Energy Analyst </span><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>LEED<sup>®</sup> Accredited Professional</span><span
style='color:#1F497D'><br>
<br>
</span><a href="http://www.glumac.com/"><span style='text-decoration:none'><img
border=0 width=339 height=37 id="_x0000_i1028"
src="cid:image001.gif@01C976EE.F234A440"
alt="http://www.glumac.com/glumacsig.gif"></span></a><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
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<hr size=2 width=330 style='width:247.5pt' noshade style='color:#9ACB33'
align=left>
</span></div>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>320 SW Washington, Suite 200</span><span style='color:#1F497D'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Portland, OR 97204-2640</span><span style='color:#1F497D'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>T. 503.227.5280 F. 503.274.7674</span><span
style='color:#1F497D'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>D. 503.345.6286</span><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>dtroy@glumac.com<br>
<br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#333333'>Thinking. Inside the building.</span></b><span style='font-size:
9.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#333333'><a href="http://www.glumac.com">www.glumac.com</a> </span><span
style='color:#1F497D'><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#333333'><img border=0 width=309 height=23 id="_x0000_i1027"
src="cid:image003.gif@01C976EE.F234A440"
alt="http://www.glumac.com/consider.gif"></span><span style='color:black'> </span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Josh
Doherty<br>
<b>Sent:</b> Thursday, January 15, 2009 8:31 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Interior Blind Savings<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I
am using eQUEST to determine the potential savings associated with using
interior blinds in a 2-story 1000 square foot lobby area with floor to ceiling
windows on two exterior sides. The model behaves like I would
expect. The results indicate the blind open and closed schedules play a
very important role in the savings. This is especially true in such a
climate where there are cold winters (solar gain into the interior space is
beneficial) and hot summers (solar gain into the interior space is not
desired). However, the best case savings I can achieve is around
$25.00/year. I had expected to save more money using the blinds.
Has anybody else played around with blinds in eQUEST? Did you find any
significant savings?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><strong>Josh Doherty</strong><o:p></o:p></p>
<p class=MsoNormal><strong>DC Engineering</strong><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>123
W. Spruce Street</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Missoula,
MT 59802</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Phone:
(406) 829-8828 Ext. 121</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Fax:
(406) 829-8829</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><a
href="mailto:jdoherty@dcengineering.net">jdoherty@dcengineering.net</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><img
border=0 width=150 height=54 id="_x0000_i1025"
src="cid:image004.jpg@01C976EE.F234A440"></span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
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