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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><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><o:p></o:p></b></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'><img width=622 height=85 id="Picture_x0020_1" src="cid:image003.png@01CF1797.F0A10A20" alt="BPT-e-mail-signature-template_readable-text"><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black;background:white'><o:p> </o:p></span></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<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>