<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="2050" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<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'>The newer versions of eQUEST have an illuminance method to
define your lighting data where you set your desired footcandle level that
might be what you are looking for. I haven’t used it yet, but it allows
you to set up a lighting system and footcandle level, and calculates the
lighting power from that. It is slightly different from what you are talking
about in the sense that it doesn’t calculate the footcandles from a
designed scheme, but goes the other way. <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 width=737 height=557 id="Picture_x0020_3"
src="cid:image001.png@01CA9082.E8B95A10"></span><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'><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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>John
Aulbach<br>
<b>Sent:</b> Thursday, January 07, 2010 12:02 PM<br>
<b>To:</b> Matutinovic, Luka; Nick Caton; R B<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] How does eQuest know
initialFootcandlesforDaylighting Calc?<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div>
<p class=MsoNormal>Luka:<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>That was my hope, but eQuest isn't that smart. As I was so
directed by an "unimpeachable source", there IS no footcandle level
until you set it in the Daylighting mode. eQuest then assumes that this is the
level 100% of the lights emit. Then when you allow the Daylighting mode to run,
eQuest lowers the % lighting based on how much you can gain from the skylights,
side daylighting, etc.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Crude but straight forward.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>Others can add or correct..<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>John
R. Aulbach, PE, CEM<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Senior
Energy Engineer<o:p></o:p></span></p>
<div>
<div class=MsoNormal><span style='font-family:"Calibri","sans-serif";
color:#17365D'>
<hr size=2 width="30%" noshade style='color:#17365D' align=left>
</span></div>
</div>
<p class=MsoNormal><b><span style='font-family:"Calibri","sans-serif";
font-variant:small-caps;color:navy'>Partner</span></b><b><span
style='font-family:"Calibri","sans-serif";font-variant:small-caps;color:green'>
</span></b><b><span style='font-family:"Calibri","sans-serif";font-variant:
small-caps;color:#006600'>Energy</span></b><b><span style='font-family:"Calibri","sans-serif";
font-variant:small-caps;color:navy'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>1990
E. Grand Avenue, El Segundo, CA 90245<br>
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745<o:p></o:p></span></p>
<p class=MsoNormal><a href="http://www.ptrenergy.com/"><span style='font-family:
"Calibri","sans-serif";color:purple'>www.ptrenergy.com</span></a><span
style='font-family:"Calibri","sans-serif";color:#1F497D'> </span><a
href="mailto:%7C%20jaulbach@ptrenergy.com"><span style='font-family:"Calibri","sans-serif"'>|
jaulbach@ptrenergy.com</span></a><span style='color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
<hr size=1 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"'> "Matutinovic, Luka"
<LMatutinovic@halsall.com><br>
<b>To:</b> Nick Caton <ncaton@smithboucher.com>; R B
<slv3sat@gmail.com>; John Aulbach <jra_sac@yahoo.com><br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Sent:</b> Thu, January 7, 2010 6:09:14 AM<br>
<b>Subject:</b> RE: [Equest-users] How does eQuest know initial
FootcandlesforDaylighting Calc?<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><br>
Nick,<br>
<br>
Does this mean that there is some "baseline" fc that is provided by
the<br>
electrical lighting? That is to say, eQuest will determine how many fc<br>
daylight provides and satisfy the rest with some fraction of the<br>
installed LPD? This implies that there is a relationship between LPD<br>
and fc, is that true and if so what is it or where could I find it?<br>
Thanks,<br>
<br>
Luka Matutinovic, B.A.Sc., LEED(r) AP<br>
Green Building Consultant <br>
<br>
T. 416.644.0649<br>
F. 416.487.9766 <br>
Toll Free 1.888.425.7255<br>
<a href="http://www.halsall.com/" target="_blank">www.halsall.com</a> <br>
<br>
HALSALL ASSOCIATES LTD. <br>
Toronto Richmond Hill Ottawa Sudbury <br>
Burlington Calgary Vancouver Dubai <br>
<br>
'50 Best Workplaces in Canada' <br>
2009 Globe and Mail<br>
P Please consider the environment before printing this e-mail<br>
<br>
<br>
-----Original Message-----<br>
From: Nick Caton [mailto:<a href="mailto:ncaton@smithboucher.com">ncaton@smithboucher.com</a>]
<br>
Sent: Wednesday, December 30, 2009 10:27 AM<br>
To: R B; John Aulbach<br>
Cc: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Subject: Re: [Equest-users] How does eQuest know initial<br>
FootcandlesforDaylighting Calc?<br>
<br>
The DOE2 help files suggest, if not directly, that the sensor you are<br>
placing is measuring ONLY "illuminance due to daylight," in isolation
of<br>
any electrical lighting in the project. When you define a
"target"<br>
illumation level (say 30fc) at a specific point/orientation, that sensor<br>
will plot the daylight measured in the same vector against a curve<br>
(specified when you select dimming control options) to determine a<br>
factor to apply to the zone's Lightig Watts/SF.<br>
<br>
To my knowledge, eQuest in no manner whatsoever is attempting to perform<br>
the operations of photometric software (AGI32/Visual/LightPRO/etc).<br>
<br>
~Nick<br>
<br>
NICK CATON, E.I.T.<br>
PROJECT ENGINEER<br>
25501 west valley parkway<br>
olathe ks 66061<br>
direct 913 344.0036<br>
fax 913 345.0617<br>
Check out our new web-site @ <a href="http://www.smithboucher.com/"
target="_blank">www.smithboucher.com</a> <br>
<br>
<br>
-----Original Message-----<br>
From: <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a><br>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]
On Behalf Of R B<br>
Sent: Monday, December 28, 2009 4:44 PM<br>
To: John Aulbach<br>
Cc: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Subject: Re: [Equest-users] How does eQuest know initial Footcandles<br>
forDaylighting Calc?<br>
<br>
My guess is that the tool assumes the lighting wattage that you have<br>
gives the amount of footcandles specified. If 50% of this is from<br>
daylight, then remaining is from 50% of the installed lighting<br>
(translating into 50% wattage usage).<br>
-Rohini<br>
<br>
On 12/28/09, John Aulbach <<a href="mailto:jra_sac@yahoo.com">jra_sac@yahoo.com</a>>
wrote:<br>
> LIke the Phantom of the Opera.."A mystery never fully explained.."<br>
><br>
> I have performed Daylighting savings EEMs in eQuest, where one places<br>
a<br>
> sensor in the space, one deliniates a minimum footcandle requirement,<br>
and<br>
> runs a Parametric run to determine how much lighting energy may be<br>
saved.<br>
><br>
> What is NOT clear to me is how eQuest determines what the inital<br>
footcandle<br>
> level is. It obviously knows the lighting fixture height (Ceilling or<br>
> syspended) and the geometry of existing windows, etc. But I cannot<br>
find<br>
> where the information lies that says "eQuest assumes so many<br>
lumens/watt of<br>
> certain lighting."<br>
><br>
> Can anyone "ILLUMINATE" me, please?<br>
><br>
> Hope all had a great Christmas.<br>
><br>
> John Aulbach<br>
><br>
><br>
><br>
_______________________________________________<br>
Equest-users mailing list<br>
http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org<br>
To unsubscribe from this mailing list send a blank message to<br>
<a href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></span></p>
</div>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</body>
</html>