I agree with the recommendation to check out DAYSIM; it's free, works very nicely with ECOTECT, and in my experience, gives useful and accurate results. I've provided a link to a .pdf that gives an excellent (and succinct) introduction to using DAYSIM with ECOTECT.
<br><br><a href="http://irc.nrc-cnrc.gc.ca/ie/lighting/daylight/daysim/GettingStarted.pdf">http://irc.nrc-cnrc.gc.ca/ie/lighting/daylight/daysim/GettingStarted.pdf</a><br><br>Josh<br><br><br><br>Josh Kjenner, EIT, LEED AP
<br>Manasc Isaac Architects Ltd.<br>10225 100 Avenue :: Edmonton, AB T5J 0A1<br>780.429.3977<br><br><div><span class="gmail_quote">On 8/29/07, <b class="gmail_sendername">Ramana Koti</b> <<a href="mailto:ramana.koti@gmail.com">
ramana.koti@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Leonard,<br><br>I haven't done extensive daylighting simulation in Ecotect but I know that Ecotect uses split flux method to compute internally reflected component that tends to overpredict daylight levels at sensor points away from openings.
<br><br>Using Radiance or Radiance based software like DAYSIM or IES <VE> could be a better option.<br><br>Ramana Koti, LEED AP<br>Sustainable Building Analyst<br><br>ELEMENTS division of BNIM architects<br>106 W. 14th Street Suite 200
<br>Kansas City, Missouri 64105<br><br>p 816.783.1635 f 816.783.1501<br>www.bnim.com| <a href="http://elements.bnim.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">elements.bnim.com</a><br><br>
<div><span class="gmail_quote">On 8/29/07, <b class="gmail_sendername">
Leonard Sciarra</b> <<a href="mailto:leonard_sciarra@gensler.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">leonard_sciarra@gensler.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div><font face="Arial" size="2"><span>I may be expanding
the forum somewhat, but, does anyone have experience modeling exterior shades /
fins to optimize day lighting using Ecotect? </span></font></div>
<div><font face="Arial" size="2"><span></span></font> </div>
<div><font face="Arial" size="2"><span>I am modeling some
exterior shades and it seems that the impact on internal light levels is not
being reflected to the degree I would expect. Now I know the algorithm
used uses a diffuse sky rather than direct radiation, but still the effect of
the shades does not seem to reduce the internal light levels. I ran a
check using insolation and direct radiation so I know the model "sees" the
shades, but the daylight is acting funny.</span></font></div>
<div><font face="Arial" size="2"><span></span></font> </div>
<div><font face="Arial" size="2"><span>Thanks.</span></font></div>
<div> </div>
<div align="left">
<p style="margin: 0in 0in 0pt;" align="left"><span style="font-size: 11pt; font-family: Arial;"><font size="2">Leonard Sciarra, AIA, LEED ap</font></span></p>
<p style="margin: 0in 0in 0pt;"><span style="font-size: 11pt; font-family: Arial;"><font size="2">312.577.6580 (Dir)</font></span></p>
<p style="margin: 0in 0in 0pt;"><span style="font-size: 11pt; font-family: Arial;"><font size="2">G E N S L E R | Architecture & Design Worldwide</font></span></p>
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<p style="margin: 0in 0in 0pt;"><span style="font-size: 11pt; font-family: Arial;"><font size="2">Chicago IL, 60603</font></span></p>
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<p style="margin: 0in 0in 0pt;"><span style="font-size: 11pt; font-family: Arial;"><font size="2"><a href="mailto:leonard_sciarra@gensler.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">leonard_sciarra@gensler.com
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