LEADER 02471oam 2200457 a 450 001 9910701876003321 005 20120926095436.0 035 $a(CKB)5470000002421346 035 $a(OCoLC)805251152 035 $a(EXLCZ)995470000002421346 100 $a20120807d2012 ua 0 101 0 $aeng 135 $aurmn||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aEnergy implications of retrofitting retail sector rooftop units with stepped-speed and variable-speed functionality$b[electronic resource] /$fDaniel Studer ... [and others] 210 1$aGolden, Colo. :$cNational Renewable Energy Laboratory,$d2012. 215 $a1 online resource (xiii, 56 pages) $ccolor illustrations, color map 225 1 $aNREL/TP ;$v5500-51102 300 $aTitle from title screen (viewed on Aug. 7, 2012). 300 $a"April 2012." 300 $a"This report was prepared by the National Renewable Energy Laboratory (NREL) Center for Electricity, Resources, and Building Systems Integration." 320 $aIncludes bibliographical references (page 34). 330 3 $aCommercial retailers understand that retrofitting constant-speed RTU fan motors with stepped- or variable-speed alternatives could save significant energy in most U.S. climate zones. However, they lack supporting data, both real-world and simulation based, on the cost effectiveness and climate zone-specific energy savings associated with this measure. Thus, building managers and engineers have been unable to present a compelling business case for fan motor upgrades to upper management. This study uses whole-building energy simulation to estimate the energy impact of this type of measure so retailers can determine its economic feasibility. 606 $aEvaporative cooling$xResearch 606 $aAir conditioning$xEnergy conservation 606 $aStores, Retail$xEnergy conservation 615 0$aEvaporative cooling$xResearch. 615 0$aAir conditioning$xEnergy conservation. 615 0$aStores, Retail$xEnergy conservation. 701 $aStuder$b Daniel$01393500 712 02$aNational Renewable Energy Laboratory (U.S.) 801 0$bSOE 801 1$bSOE 801 2$bOCLCO 801 2$bGPO 906 $aBOOK 912 $a9910701876003321 996 $aEnergy implications of retrofitting retail sector rooftop units with stepped-speed and variable-speed functionality$93471604 997 $aUNINA