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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Try this report from Southern California Edison:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><a href="http://www.etcc-ca.com/sites/default/files/OLD/images/stories/office20of20future20phase20ii20final202-15-091.pdf">http://www.etcc-ca.com/sites/default/files/OLD/images/stories/office20of20future20phase20ii20final202-15-091.pdf</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Unfortunately it’s more than 5 years old, but hopefully it’s still useful for you.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Keith Swartz, PE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer |
<b>Seventhwave </b></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:gray">|
<b>Madison.Chicago.Minneapolis<o:p></o:p></b></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">(formerly Energy Center of Wisconsin)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">608.210.7123 |
<a href="http://www.seventhwave.org/">www.seventhwave.org</a><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Elizabeth Gillmor [mailto:elizabeth@energetics-eng.com]
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<b>Sent:</b> Wednesday, April 29, 2015 10:19 AM<br>
<b>To:</b> West, Scott P<br>
<b>Cc:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] ASHRAE 90.1 and Vacancy Sensors<o:p></o:p></span></p>
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<p class="MsoNormal">I did some research on this topic a few years back, as our local utility was interested in providing a higher level of rebates for vacancy sensors. I found a white paper that showed the Title 24 research into this topic. It showed an
11% increase (on average) in savings for vacancy sensors vs standard occupancy sensors. I will have to see if I can dig the paper up, though you might find it with a little googling. Anyways, that +11% is is now written into our utility's modeling protocol
for energy savings calculations.<o:p></o:p></p>
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<p class="MsoNormal">If you can find a white paper dated within 5 years, you can use it as the basis for an Exceptional Calculation, but you will also have to show that using vacancy sensors is NOT the design standard in your area. (If it's in your local code,
it won't fly with LEED.)<o:p></o:p></p>
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<p class="MsoNormal">Good luck!<o:p></o:p></p>
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<p class="MsoNormal">Elizabeth<o:p></o:p></p>
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<p class="MsoNormal"><b>Elizabeth Gillmor </b><b><span style="font-size:7.5pt">PE, LC, LEED AP</span></b><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:18.0pt;font-family:"Arial",sans-serif;color:#38761D;background:white">e n e r g e t i c s </span></b><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#38761D">consulting engineers, llc</span></b><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:#666666;background:white"><a href="http://energetics-eng.com" target="_blank">energetics-eng.com</a></span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#666666;background:white">c 303.619.0091</span><o:p></o:p></p>
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<p class="MsoNormal">On Tue, Apr 28, 2015 at 5:44 PM, West, Scott P <<a href="mailto:Scott.West@jacobs.com" target="_blank">Scott.West@jacobs.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">All,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’ve come across an interesting problem on a project. I’m modeling a building using App. G for LEED V3 submission (ASHRAE 90.1-2007 baseline). The building was actually designed
to comply with most provisions of 90.1-2013 however. Most of our spaces employ “vacancy” sensors (automatic off after 30 min, manual on control) rather that occupancy sensors (automatic off after 30 min, automatic on control) for lighting control. As many
of you are probably aware, 90.1-2007 App. G allows us to take a 10% savings (Table G3.2) on the LPD (it’s well over 5,000 ft2). 90.1-2010 App. G allows the same reductions in lighting power but 2013 leaves it out since it’s now required by the standard in
most instances. <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">My understanding from SSPC 90.1 proceedings is that the committee determined that vacancy sensors save more energy than occupancy sensors (as they reduce false ons from transient
movement). I’m not sure how these savings are being estimated because predicting occupancy patterns is always fraught with assumptions. Anyway, does anyone know if there is any guidance on claiming more than the standard 10% for occupancy sensors with these
type of controls? I’d like to avoid performing an exceptional calculation measure if possible so any 90.1 or LEED Interpretations would be really useful.
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366">Scott P. West, P.E., LEED AP
</span><span style="font-size:8.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366">BD+C</span><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366">, BEAP, BEMP
</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:gray">|
</span><b><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366">JACOBS</span></b><span style="font-size:10.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366"> </span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:gray">|
Mechanical Engineer </span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:black">|
</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:gray">Energy & Power Solutions</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:black"> |
</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:gray;background:white"><a href="tel:817.222.8512" target="_blank">817.222.8512</a> office
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</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:gray"><a href="tel:817.897.1882" target="_blank">817.897.1882</a> cell
</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:black">|</span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:#003366"> </span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif;color:black"><a href="mailto:scott.west@jacobs.com" target="_blank">scott.west@jacobs.com </a></span><span style="font-size:9.0pt;font-family:"Trebuchet MS",sans-serif;color:black">|
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<a href="http://www.jacobs.com/energyportfolio" target="_blank"><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif">www.jacobs.com/energyportfolio</span></a></span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif;color:black">
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