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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks Tim – I somehow missed that map when I was looking for contacts
a few weeks ago.<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>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img width=119 height=37 id="_x0000_i1029"
src="cid:image002.jpg@01CA4100.4B8B0D50" alt="cid:489575314@22072009-0ABB"></span><b><span
style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER</span><span style='font-size:7.5pt;color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Check out our new web-site @ </span></i><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a
href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<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"'> Tim Reynolds
[mailto:tim.reynolds@cbengineers.com] <br>
<b>Sent:</b> Tuesday, September 29, 2009 12:09 PM<br>
<b>To:</b> Paul Carey; Nick Caton; Erik Eriksson<br>
<b>Cc:</b> virtual-sim@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Virtual-sim] Low DF-values with Radiance<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";
color:navy'>IES has representation in San Francisco and Boston. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><a href="http://www.iesve.com/About-us/Locations">http://www.iesve.com/About-us/Locations</a><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";
color:#0047B8'>TIM REYNOLDS, P.E., LEED AP<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#0047B8'>Associate Principal<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.0pt;font-family:"Calibri","sans-serif";
color:#183962'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#183962'><img border=0 width=166 height=75 id="Picture_x0020_1"
src="cid:image003.jpg@01CA4100.4B8B0D50"
alt="cid:image001.gif@01C77ACA.9DDDF4E0"></span><span style='font-size:10.0pt;
font-family:"Calibri","sans-serif";color:#0C45A0'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:7.0pt;font-family:"Calibri","sans-serif";
color:#0C45A0'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#0047B8'>600 108th Ave NE Suite 600 | Bellevue, WA 98004<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#0047B8'>T 425 564 8400 </span><span style='font-size:10.0pt;
font-family:"Calibri","sans-serif";color:purple'>Ext 8431</span><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#0047B8'> | C
206 422 2547 | F 425 564 8517<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:navy'><a
href="mailto:tim.reynolds@cbengineers.com"><span style='font-size:10.0pt;
font-family:"Calibri","sans-serif";color:black'>tim.reynolds@cbengineers.com</span></a></span><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#0047B8'> | </span><span
style='color:navy'><a href="http://www.cbengineers.com/"><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:black'>cbengineers.com</span></a></span><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#0047B8'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:#0C45A0'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#0D0D0D'>The email message you have received originates from the firm of
CB Engineers. It is intended only for the individual or distribution
group named above. The contents may be privileged or confidential. It is
STRICTLY PROHIBITED for anyone else to disclose copy, distribute or use the
contents of this message. If you received this message in error, please
notify the sender immediately by a return e-mail message and delete the
original and all copies of the communication, along with any attachments from
your system.<o:p></o:p></span></p>
<p class=MsoNormal><i><span lang=EN-GB style='font-size:18.0pt;font-family:
Webdings;color:green'>P</span></i><i><span lang=EN-GB style='font-family:"Arial","sans-serif";
color:navy'> </span></i><b><i><span lang=EN-GB style='font-size:9.0pt;
font-family:"Calibri","sans-serif";color:green'>Please consider the environment
before printing this email.</span></i></b><span style='font-size:11.0pt;
color:navy'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<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"'>
virtual-sim-bounces@lists.onebuilding.org [mailto:virtual-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Paul Carey<br>
<b>Sent:</b> Tuesday, September 29, 2009 1:52 AM<br>
<b>To:</b> 'Nick Caton'; 'Erik Eriksson'<br>
<b>Cc:</b> virtual-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Virtual-sim] Low DF-values with Radiance</span><o:p></o:p></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Erik/Nick<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’d agree on the glazing spec thing don’t go putting in very
clear glass unless you are very sure that it’s going to have those sorts of
properties. A check of the G value should help give you a guide to light
transmittance. Or just check out the Pilkington website or similar to
give you a good idea, their selection tool (think it’s called spectrum or
something, a while since I’ve used it) is quite good for getting some ideas of
what it will be like.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>In terms of the daylight studies, they should always be carried
out using the IEE overcast sky to assess daylight factors. If you want to
check out glare etc obviously use a different sky, but for DF calculations the
overcast sky should be used. The default positions of everything else in
IES should be ok once you’ve set that up as it will work out the working plane
levels based on that sky. <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nick, you should be able to download IES for a trial from their
website normally. Just email in a request for keys and they should set
you up with a trial. If you haven’t checked out DesignBuilder you might
want to do that too (30 day trial available from their website). Quite
similar tool (front end slightly more sketchup like than IES), but uses
energyplus instead. Doesn’t have the radiance link yet, but we keep pestering
the guys there to get that link in.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Paul<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<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"'> Nick Caton
[mailto:ncaton@smithboucher.com] <br>
<b>Sent:</b> 28 September 2009 16:29<br>
<b>To:</b> Erik Eriksson; Paul Carey<br>
<b>Cc:</b> virtual-sim@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Virtual-sim] Low DF-values with Radiance<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Erik,<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'>I’m not familiar with the limitations/capabilities of the IES
Radiance tool (still looking for a vendor in the US that can send me some kind
of trial), but I may be able to offer some suggestions based on my limited
daylight modeling experience:<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=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To clarify, is it 12% of your <u>wall</u> area that is windows?<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Again, not sure of the IES Radiance’s operation, but when you
say ‘white’ floors/ceiling and ‘gray’ floors, what reflectances are being
modeled (i.e. 20/50/80%?)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Consider the hour/month being modeled, along with the
orientation and location on the globe. Perhaps you’re modeling an instant
in time where there is little-to-no direct sunlight on your glazing? <o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I am also approaching learning daylight modeling from an
energy-modeler’s perspective: For daylight studies, I try to give myself
an idea of what <u>should</u> be going on first before “crunching the numbers”
by building a simple model in Google Sketchup, located/oriented on the globe,
and playing with the simplified daylighting tools to see how the sun strikes
the building through the year. With practice I’m sure this will become
more intuitive, but until then I’ve learned not to rely on my intuitions!<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><span
style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>A general heads-up that won’t solve your immediate
concern: a visible transmittance (what IES Radiance calls “transparency”
may be something else) of 0.9 is not unheard of, but pretty high for exterior
envelope glazing… when I do daylighting/rendering studies I usually go no
higher than 0.8 or so unless I have actual product specs in hand.<o:p></o:p></span></p>
<p class=MsoListParagraph><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'>~Nick<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'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><img border=0 width=119 height=37 id="Picture_x005f_x0020_1"
src="cid:image002.jpg@01CA4100.4B8B0D50" alt="cid:489575314@22072009-0ABB"></span><b><span
style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER</span><span style='font-size:7.5pt;color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
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color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Check out our new web-site @ </span></i><span style='font-size:
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href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span
style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:blue'> </span></u><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'><o:p> </o:p></span></p>
<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"'>
virtual-sim-bounces@lists.onebuilding.org
[mailto:virtual-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Erik
Eriksson<br>
<b>Sent:</b> Monday, September 28, 2009 10:10 AM<br>
<b>To:</b> Paul Carey<br>
<b>Cc:</b> virtual-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Virtual-sim] Low DF-values with Radiance<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hey,</span> <br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Yeah, I've
tried that. With more or less the same result.<br>
I'm quite new to this with lighting calculations. I'm more used to energy performance.
</span><br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>So I cant
really say if the values are correct or not.</span> <br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Best regards</span>
<br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>E r i k
E r i k s s o n <br>
<br>
Energy specialist and project manager<br>
________________________________<br>
White project & environmental management<br>
<br>
Box 4700<br>
116 92 STOCKHOLM<br>
Phone: +46(0)8-402 26 77<br>
Fax: +46 (0)8-402 25 10<br>
Visit: Östgötagatan 100<br>
</span><a href="http://www.white.se/"><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'>http://www.white.se</span></a><span style='font-size:
10.0pt;font-family:"Arial","sans-serif"'><br>
<br>
We are certified according to ISO 9000 and 14 001</span> <o:p></o:p></p>
<table class=MsoNormalTable border=0 cellpadding=0 width="100%"
style='width:100.0%'>
<tr>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>From:</span> <o:p></o:p></p>
</td>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>Paul
Carey <paul@zed-uk.com></span> <o:p></o:p></p>
</td>
</tr>
<tr>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>To:</span> <o:p></o:p></p>
</td>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>Erik
Eriksson <erik.eriksson@white.se></span> <o:p></o:p></p>
</td>
</tr>
<tr>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>Cc:</span> <o:p></o:p></p>
</td>
<td style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>"virtual-sim@lists.onebuilding.org"
<virtual-sim@lists.onebuilding.org></span> <o:p></o:p></p>
</td>
</tr>
<tr>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>Date:</span> <o:p></o:p></p>
</td>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>2009-09-28
17:06</span> <o:p></o:p></p>
</td>
</tr>
<tr>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>Subject:</span> <o:p></o:p></p>
</td>
<td valign=top style='padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Arial","sans-serif"'>Re:
[Virtual-sim] Low DF-values with Radiance</span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal><o:p> </o:p></p>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" noshade style='color:#973DE0' align=center>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
<br>
<br>
Erik <br>
<br>
Try carrying out a model for one room at a time. The results tend to be quite
different. <br>
<br>
Cheers <br>
Paul <br>
<br>
<br>
<br>
Sent from my iPhone <br>
<br>
On 28 Sep 2009, at 15:55, Erik Eriksson <<a
href="mailto:erik.eriksson@white.se">erik.eriksson@white.se</a>> wrote:<br>
<br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Hi all,</span> <br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
I'm doing some daylighting studies with RadianceIES with a model I've imported
from revit. The model seems to have been imported just fine.</span> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
However I'm getting very low DF-values.</span> <span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'><br>
The rooms I've been studying are rectangular cellular offices with about 12% of
the floor area consisting of windows.</span> <span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'><br>
The results show that approx 5-10% the area of a working plane at 0,8 m above
the floor has a DF-value of 1.2 %.</span> <span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'><br>
This feels like a very low number. The window transparancy is 0,9 and all the
walls are white colored. The ceiling is white and the floor is gray.</span> <span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
<br>
Does anyone have a suggestion as to what might be wrong or if these values seem
ok.</span> <br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Thanks in advance</span> <br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Best regards</span> <br>
<span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
E r i k E r i k s s o n <br>
<br>
Energy specialist and project manager<br>
________________________________<br>
White project & environmental management<br>
<br>
Box 4700<br>
116 92 STOCKHOLM<br>
Phone: +46(0)8-402 26 77<br>
Fax: +46 (0)8-402 25 10<br>
Visit: Östgötagatan 100</span><u><span style='color:blue'><br>
</span></u><a href="http://www.white.se/"><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>http://www.white.se</span></a><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
<br>
We are certified according to ISO 9000 and 14 001</span> <br>
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