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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>In Radiance (in the appropriate rooms):</span></font><font
size=2 color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>1. Set appropriate properties for
the glazing, walls, ceilings and floors. Take care with the Radiance
glazing parameter 'transmissivity', which is not the same as
transmittance. Radiance provides a utility for converting between the two. The
transmittance should be set to match the normal incidence light transmittance
from the glazing manufacturer. Apply a factor for the frame (Radiance doesn't
do this automatically).</span></font><font size=2 color=black><span
style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>2. Create daylight sensors.</span></font><font
size=2 color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>3. Run the 'Apache' daylight simulation
to create the illuminance (.ill) file.</span></font><font size=2 color=black><span
style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Times New Roman"><span
style='font-size:11.0pt;color:black'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>In Apache View:</span></font><font
size=2 color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>1. Set up an appropriate formula
profile to control electrical lighting as a function of working plane
daylight illuminance e1 (note that e2 is not currently available). Create
weekly or annual profiles using this daily profile, as appropriate. An example
profile is given in the ApPro User Guide (and other manuals):</span></font><font
size=2 color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:3.0pt;margin-right:0in;margin-bottom:
0in;margin-left:28.35pt;margin-bottom:.0001pt'><font size=2 color=black
face=Arial><span lang=EN-US style='font-size:11.0pt;font-family:Arial;
color:black'>ramp(e1,0,1,500,.4)</span></font><font size=2 color=black
face=Arial><span lang=EN-US style='font-size:11.0pt;font-family:Arial;
color:black'> a formula suitable for applying as a dimming profile controlling
lighting gain as a function of available daylight. It modulates the lighting
gain as a function of the illuminance on the working plane, e1. The value of
the profile falls from 1 at zero illuminance to 0.4 at illuminance 500 lux,
thereafter remaining constant at this value. The value 0.4 (which you should
set as appropriate) represents the fraction of the room’s lighting gain
which is not subject to daylight control. The illuminance e1 must be computed
using the link to Radiance.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>Use different formulae as necessary
to cater for conditions in different rooms.</span></font><font size=2
color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>2. Apply this profile as a dimming
profile in the room or rooms.</span></font><font size=2 color=black><span
style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>3. Run ApacheSim with the Radiance link
turned on.</span></font><font size=2 color=black><span style='font-size:11.0pt;
color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
11.0pt;font-family:Arial;color:black'>4. View lighting gains (turn on the
'sensible internal gains breakdown' output group in the ApacheSim
dialog) and e1 values in <st1:place w:st="on">Vista</st1:place>.</span></font><font
size=2 color=black><span style='font-size:11.0pt;color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
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<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=1 color=black face=Arial><span lang=EN-US style='font-size:8.0pt;
font-family:Arial;color:black'>Rashmi Sonal, LEED AP</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=1 color=black face=Arial><span lang=EN-US style='font-size:8.0pt;
font-family:Arial;color:black'>Environmental Designer<br>
Computational and Simulation Analysis (CoSA)<br>
<a href="http://www.burohappold.com" title="http://www.burohappold.com/">www.burohappold.com</a></span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
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font-family:Arial;color:black'>Tel: (+1) 212 616 0285</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Hammad, Fawwaz<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, August 16, 2009 3:32
AM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Dimming Lights
( IES-VE)</span></font><span lang=EN-US><o:p></o:p></span></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Century Gothic"><span
lang=EN-US style='font-size:10.0pt;font-family:"Century Gothic";color:black'>Dear
all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Century Gothic"><span
lang=EN-US style='font-size:10.0pt;font-family:"Century Gothic";color:black'>Does
anyone have an idea to place a dimming light(s) in an IES-VE model? The
artificial light has to supplement the available day lighting to achieve (500
Lux ) in the space. The dimming light has to be linked to the Apache Sim,
so that the light electricity consumption will show up in the simulation
results. Your step-by-step guidance is highly appreciated. Many thanks<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Century Gothic"><span
lang=EN-US style='font-size:10.0pt;font-family:"Century Gothic";color:black'><o:p> </o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=2 color=black
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:black'>Best
Regards,<o:p></o:p></span></font></p>
<p style='margin:0in;margin-bottom:.0001pt'><font size=3 color=black
face="Times New Roman"><span style='font-size:12.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><b><font size=2 color=black face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:black;font-weight:bold'>Fawwaz
Hammad</span></font></b><font color=black><span style='color:black'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
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