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<p class="MsoNormal"><span style="color:#1F497D">Jim,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">In case you don’t have 90.1-2013, Addendum g to 90.1-2010 is the one that added energy requirements for refrigeration cases (see attached, I believe the addenda are free downloads).
<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">As someone who has gone through the exceptional calculation method for process loads with LEED, I would recommend using this guidance as your baseline if you show a significant improvement with your design because
establishing a baseline for process loads can be challenging (read: lots of extra time spent).
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><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
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</span><span style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<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""> Rosenberg, Michael I [mailto:Michael.Rosenberg@pnnl.gov]
<br>
<b>Sent:</b> Wednesday, January 22, 2014 8:46 PM<br>
<b>To:</b> Jim Dirkes<br>
<b>Cc:</b> bldg-sim@lists.onebuilding.org; EnergyPlus_Support@yahoogroups.com<br>
<b>Subject:</b> Re: [Bldg-sim] Claiming refrigerated casework savings for a LEED project<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Jim, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The 2013 version of ASHRAE Standard 90.1 added requirements for refrigerated casework. I suggest you identify where your project exceeds those requirements and make the case to USGBC that what is in 90.1 should be the baseline. Good luck.<o:p></o:p></p>
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<p class="MsoNormal"><br>
<b><span style="font-size:13.0pt">__________________________</span></b><o:p></o:p></p>
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<p class="MsoNormal"><b> </b><o:p></o:p></p>
<p class="MsoNormal"><b>Michael Rosenberg, CEM, LEED AP</b><o:p></o:p></p>
<p class="MsoNormal">Senior Research Scientist<o:p></o:p></p>
<p class="MsoNormal">ENERGY & ENVIRONMENT DIRECTORATE<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Pacific Northwest National Laboratory<o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="x-apple-data-detectors://0/0">2032 Todd Street</a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="x-apple-data-detectors://0/0">Eugene, OR 97405</a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="tel:(541)%20844-1960">(541) 844-1960</a></span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:black"><a href="mailto:michael.rosenberg@pnl.gov">michael.rosenberg@pnnl.gov</a></span><o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.pnl.gov/"><span style="color:black">www.pnnl.gov</span></a><o:p></o:p></p>
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On Jan 22, 2014, at 17:33, "Jim Dirkes" <<a href="mailto:jim@buildingperformanceteam.com">jim@buildingperformanceteam.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Dear Forum,<o:p></o:p></p>
<p class="MsoNormal">I am modeling a supermarket which has made effort to install refrigerated casework that is more efficient than “normal” in three ways:<o:p></o:p></p>
<p class="MsoNormal">• Casework lighting is LED instead of fluorescent<o:p></o:p></p>
<p class="MsoNormal">• Evaporator fans use ECM motors and are demonstrably more efficient<o:p></o:p></p>
<p class="MsoNormal">• The compressors have higher COP<o:p></o:p></p>
<p class="MsoNormal">I did not realize that claiming savings from a “process” load also requires substantiation of the Baseline energy for the process load via comparison to several similar facilities or a published paper. I wish I knew that months ago!<o:p></o:p></p>
<p class="MsoNormal">We have data from three other supermarkets owned by the same company, but these other examples are not identical. So far, all I can say is that:<o:p></o:p></p>
<p class="MsoNormal">a) Manufacturer literature claims that LEDs used in their casework use ~ 65% less energy than fluorescent lights<o:p></o:p></p>
<p class="MsoNormal">b) ECM fans use about 35% less energy in a manufacturer power comparison table<o:p></o:p></p>
<p class="MsoNormal">c) The COP is better (I do not have detailed data yet)<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b><span style="color:red">This strikes me as a fairly weak argument, so I am asking you for suggestions or published data to strengthen the argument.</span></b><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">p.s., My last alternative is to ignore the process energy savings and make it the same for both models. I think the savings are substantial, however, and would rather find a way to claim them!<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black;background:white"><image003.png></span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black;background:white"> </span><o:p></o:p></p>
<p class="MsoNormal" style="margin-bottom:6.0pt;text-autospace:none"><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">"Attack me … rather than the path I follow and which I point to anyone who asks me where I think it lies. If I know the way home
and am walking along it drunkenly, is it any less the right way because I am staggering side to side?" Leo Tolstoy</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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