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<p class=MsoNormal><span style='color:#1F497D'>Umesh – you are
understanding the layout correctly =). <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>I could apportion some fraction
of the classroom’s LPD to the corridor, and then locate a sensor in the
corridor to control that resulting fraction of lighting. This workaround
would be perfect, though it’s a bit of extra work that I’m unsure
is necessary… For all I know, these photocells are working
correctly, but I am not sure how to verify that since the appropriate LS-M
reports aren’t being generated!<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Ideally, I would like the energy
model to have the photocell in the corridor control a fraction of the lights in
the classroom – if only because it would be less work and match the true
design (open loop photocell controls). <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Regardless of whether this is actually
working, I’d really like to know whether photocells outside of the
controlled zone, irrespective of any relative window locations (or even better,
outside of the building perimeter) can correctly measure and report daylight,
accounting for specified building/site shades. I understand this would
be bending the current intent of the photocells as defined in eQuest, as they’re
intended to vary light levels based on closed loop controls (measuring
ambient+daylighting at the work surface in question). This might help
bridge a gap between syncing measured/modeled daylight behavior to an energy
model to accurately approximate open loop design behavior.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>~Nick</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37
id="_x0000_i1027" src="cid:image001.jpg@01CACFED.9DE108D0"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='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;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='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"'> Umesh Atre
[mailto:umesh@innovativedesign.net] <br>
<b>Sent:</b> Tuesday, March 30, 2010 9:26 AM<br>
<b>To:</b> Nick Caton; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] Daylight sensor placement question<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:blue'>If I may ask a
question:</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:blue'>It looks like you
have the 2nd sensor located in a corridor the south side of
which is a glass wall. If I understand this correctly,</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:blue'>why would you not
define the sensor as part of that corridor zone instead of the north
zone? </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;color:blue'>Maybe a section or
3d of this space would help.</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><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>Nick
Caton<br>
<b>Sent:</b> Monday, March 29, 2010 11:58 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Daylight sensor placement question</span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal>Hey all!<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Daylight sensor placement question (see highlighted space in
attached screengrab for an illustration):<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I have a classroom with North and South daylight transition windows,
and a corresponding North and South daylighting “zone.” The
North side is easy – those windows are on the envelope wall, so I’m
sure the daylight is correctly being measured/modeled within the space for the
“North zone” sensor to pick up on.<o:p></o:p></p>
<p class=MsoNormal>The south windows however are in an internal wall, and on
the other side is a “glass box” corridor. Rather than pursue
the fuzzy route of trying to model daylight transitioning between zones
correctly (if anyone can fully digest the help file for INSIDE-VIS-REFL I would
really appreciate the layman’s explanation), I’ve taken the
“easy” route and located the daylight sensor in the corridor.
This happens to conveniently match the actual design location of the
photocell. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>My question has two parts:<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'><span style='font-family:
Symbol'>·</span><span style='font-size:7.0pt;font-family:"Times New Roman","serif"'>
</span>Can a zone’s daylight sensor be located in another zone and
measure light in a remote location? If so, are any extra steps necessary?<o:p></o:p></p>
<p class=MsoListParagraph style='text-indent:-.25in'><span style='font-family:
Symbol'>·</span><span style='font-size:7.0pt;font-family:"Times New Roman","serif"'>
</span>I see my eQuest project is, on its own, generating an LS-M report for
each “Daylight Illuminance Ref Pnt 1.” What is the procedure
to generate the same reports for “Ref Pnt 2” where those
occur? <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>~Nick<o:p></o:p></p>
<p class=MsoNormal><img border=0 width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CACFED.9DE108D0" alt="cid:489575314@22072009-0ABB"><b><span
style='font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><span
style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;color:#2D4D5E'>Check out
our new web-site @ </span></i><span style='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;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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