BUILDINGTECHNOLOGIESPROGRAMFebruary6,2014– revised3/5/14ASRACPumpsWorkingGroupMetricConstructDetails2MetricApplicabilitytoPumpConfigurationsPumpConfigurationBare Pump BarePump+Motor BarePump+Motor+Controls

Metric CoverageBarePumpDoesnotincludemotorefficiencyDoesnotdescribecontrollossesorbenefitsBarePump+Motor(w/ std.motor)DoesnotdescribecontrollossesorbenefitsBarePump+Motor+Controls(w/ std.motorandcontrols)(w/std.controls)

PumpMotor PumpMotorControl Pump3CoveredProductMetricBarePumpEfficiencyorEnergyUseMotorEfficiencyorEnergyUseControlsEfficiencyorEnergyUse‘Pump’EfficiencyorEnergyUse=4PossibleMetricPumpEnergyRating(PER):equallyweightedaverageelectricinputpower(P1)tothe‘pump’measured(orcalculated)atthemotorinputor,whenpresent,controlsinput,overaspecifiedloadprofile(100%,75%,50%,and25%ofBestEfficiencyPoint(BEP)flowatnominalspeed).•Forbarepumporpump+motor,achievepart‐loadbythrottlingthroughpumpcurveatratedspeed.•Forpump+motor+controls,achievepart‐loadbyreducingspeedandcorrectingtoaspecifiedsystemcurveshape.PER=0.25(P1BEP)+0.25(P11.1BEP)+0.25(P10.75BEP)+0.25(P10.5BEP)Notes:DenominatorcouldbeincludedinmetricRatingpointof25%maynotbeappropriate/feasibleforthrottledconfigurations5PEROptionsNoDenominator DenominatorForm WeightedaverageofpumpinputpoweratseveralloadpointsWeightedinputofpumpinputpoweratseveralloadpointsnormalizedby pumphydraulicoutputpower,areferencepumpefficiency,orothervalueUnits kW, Btu,orHP Dimensionless*Standard Strong function offlowandspecificspeedWeakfunction offlowandspecificspeedProsRepresentativeoftheenergyconsumptionofthatpumpinthefieldMorecomparableacrosspumps ofdifferentsizes/specificspeeds;SimilartoEEIapproachinEUConsNotcomparableacrosspumpsof differentflows/specificspeedsNoreference pumpefficiencyinUS,sodifficulttoset;otherdenominatoroptionsmaynotbelogical(discussedonnextslide)*Mayvarybasedondenominatorchosen6DenominatorOptionsDenominatorProsConsPowerconsumptionofsamepumpinanuncontrolledsystemN/AThisvaluegivesnoindicationoftheefficiencyofthepump‐twopumpswithequivalentpart‐loadperformanceanddifferentefficienciesatBEPwouldhavethesameratedvalue.ReferenceshaftpowerforminimallycompliantbarepumpwithminimallycompliantmotorResultsinvaluebetween0and1.Clearlyindicatesperformanceofapumprelativetoabaseline.Inherentlyrequiresdesignationofminimallycompliantpump(i.e.,MEI).Mayover‐orunder‐representthebaselineefficiencyforsomepumps.MarketaverageshaftpowerwithminimallycompliantormarketaveragemotorIndicatesperformanceofapumprelativetothemarket.Locksinthemetrictotheperformanceofpumpsinthemarketatagivenpointintime.Doesn’tlimitmetricvaluesbetween0and1.Testedpump’shydraulic poweratBEPAccountsfordifferencesinpumpefficienciesbetweenmodels.HassimilarratedvaluesforpumpsofdifferentsizesLowerPERratingforsmallerpumpsbecauselowercapacityequipmentisinherentlylessefficient.7×standardizedmotorefficiencyandpartloadcurveMOTORpumpperformancedatafrompumptestatratedspeedBarePumpTesting×standardizedcontrolsperformanceControlsExampleofMotorChoice:•Ifstandardmotor:ACInduction,NEMADesignB,openenclosure.•CouldusenextHPabovebrakehorsepowerat120%BEPorotherdefinedmotorrating.•Poleswouldbebasedonspeedatwhichpumpisbeingrated.•Ifstandardfullloadmotorefficiencyisused,itwouldbebasedonFederalstandards(assumingthemotorisatypecoveredbyFederalstandards).•Couldusefullloadmotorefficiencyforallpointsordevelopstandardmotorpart‐loadcurves.8×manufacturermotorefficiencyatfullandpartloadAMOTORBMOTORPUMPBarePump+MotorTestingManufacturercanpairitspumpdatawithmanufacturermotordata.Manufacturercanmeasurepowerofpump+motorcombo.standardizedcontrolsperformanceControls×pumpperformancedatafrompumptestatratedspeedstandardizedcontrolsperformanceControls×9pumpperformancefrompumptestatratedandreducedspeed×motor/driveperformancedataBCVFDMOTORControlsMOTORPUMPBarePump+Motor+ControlsTestingManufacturercanpairitspumpdatawithtestedmotor+VFD data.Manufacturercanmeasurepowerofpump+motor+controlscombo.×manufacturerordefaultmotorefficiencyAMOTORManufacturercanpairitspumpdatawithmanufacturermotordataanddefaultcontrolscredits.pumpperformancedatafrompumptestatratedspeeddefaultcontrolsperformanceControls×10BarePump/BarePump+MotorEquation11BarePump+Motor+ControlsEquation12IssuestoDiscuss13ExampleofMetricApplicationNote:TheexampleonthefollowingslidesisprovidedforthelimitedpurposeofdemonstratingthepotentialapplicationofthePERmetric.ItdoesnotrepresentadecisionbyDOEonanappropriatemetricorstandardlevelfortheproductstobeaddressedbythepumpsworkinggroup.Valuesusedtocompareanexamplepumptotheexamplecalculatedefficiencylevelareforillustrationpurposesonlyandshouldnotbeconsideredasrepresentingrecommendedvalues.ThecomparisonoftheexamplePERmetrictotheMEImetricisprovidedonlytodemonstratetheresultsofthecalculation,anddoesnotrepresentanevaluationbyDOEoftherelativemeritsofoneapproachovertheother.14Howefficiencylevelscouldbeset15ߟݑ݌

݉݌,BEPcanbecalculatedthesamewayasinMEI,asafunctionofflowandspecificspeed.ߟݑ݌

݉݌at75%,50%,and25%canbecalculatedasapercentageofߟݑ݌

݉݌,BEP•IntheEU,pumpefficiencyat75%BEPflowmustbe94.7%ofߟݑ݌

݉݌,BEP•IntheEU,pumpefficiencyat75%BEPflowmustbe94.7%ofߟݑ݌

݉݌,BEP•UsingasubsetofHIdata(ESFMpump,4pole*),DOEanalyzedpart‐loadpumpefficiencyasapercentageofBEPefficiency:•Theresults,intheformofpopulationaveragevalues,areasfollows:-At75%BEPflow,ߟݑ݌

݉݌,0.75is95%ofߟݑ݌

݉݌,BEP–Efficiencyasapercentofߟݑ݌

݉݌,BEPwasindependentofflowandfairlyindependentofspecificspeed–AgreeswithEUvalue-At50%BEPflow,ߟݑ݌

݉݌,0.50is78.5%ofߟݑ݌

݉݌,BEP–Estimatedߟݑ݌

݉݌,0.50byfitting2ndorderpolynomialstothe75%,100%,and110%BEPefficiencydataprovidedbyHI.–Efficiencyasapercentofߟݑ݌

݉݌,BEPwasindependentofflow,fairlyindependentofspecificspeed,butshowedalargerstandarddeviationthanat75%BEP (possiblyduetoestimatingߟݑ݌݌݉,0.50(data-25%BEPflow:Nodataavailable;thisflowpointisomittedforthisanalysis*AllequipmentclasseswillbeanalyzedinthefutureSettingTargetValues16Howefficiencylevelscouldbeset:BarePumpsWithߟݑ݌

݉݌,0.50andߟݑ݌

݉݌,0.75definedas(0.785xߟݑ݌

݉݌,BEP) and(0.950xߟݑ݌

݉݌,BEP)respectively,andusingfullloadmotorefficiencyforallpoints,the 

# PER

Eff.	Levelequationcanbesimplifiedto:ܲܧܴா௙௙.௅௘௩௘௟ൌ1ߟ௥௢௧௠௢ൈ߱଴.ହ଴ܲ௛௬ௗ௥௔௨௟௜௖,଴.ହ଴0.785	 ൈ 	ߟ௣௨௠௣,஻ா௉+߱଴.଻ହܲ௛௬ௗ௥௔௨௟௜௖,଴.଻ହ0.950 ൈ 	ߟ௣௨௠௣,஻ா௉+߱୆୉୔ܲ௛௬ௗ௥௔௨௟௜௖,஻ா௉ߟ௣௨௠௣,஻ா௉Where:ߟݑ݌

݉݌,BEPinthisexampleisfromtheMEIsurface,usingflowandspecificspeed.•Ifthisapproachisused,theactualvalueofߟݑ݌

݉݌,BEPcouldbedeterminedbytheC‐valueor“MEILevel”thatisultimatelyselectedasaresultofthestandardsanalysis.PleaseNote:thevaluesof0.785and0.950arepreliminaryandareusedfordemonstrationpurposesonly.Ifthisapproachisusedfortheratingmetricandstandard,theselectionofactualvaluesforthesefactorswouldbemadebaseduponfurtheranalysis.17ExampleScenarioandCalculationsGiventheFollowingTheoreticalPumpandParameters•BEPFlow:880GPM•BEPHead:117ft•SpecificSpeed:1500•PBEP=30.99HP(Shaft),26.0HP(Hydro)•P0.75=27.67HP(Shaft),22.4HP(Hydro)•P0.50=24.64HP(Shaft),17.6HP(Hydro)•ߟMotor,Default=93%•LoadPointWeight=1/3[even]ܲܧܴ௖௟௔஼௨௟௔௧௘ௗൌ	߱଴.ହ଴ܲ଴.ହ଴ߟ௥௢௧௠௢൅ ߱଴.଻ହܲ଴.଻ହߟ௥௢௧௠௢൅ ߱஻ா௉ܲ஻ா௉ߟ௥௢௧௠௢ܲܧܴ௖௟௔஼௨௟௔௧௘ௗൌ10.93ൈ13ൈܲܪ	29.86 ൌ ܲܪ30.99 ൅ ܲܪ27.67	 ൅ ܲܪ24.64ߟBEP=84.04%ߟ0.75=80.98%ߟ0.50=71.50%18ExampleScenarioandCalculationsPERCalculated:29.23ߟpump,BEP= 84.04%PassingC‐ValueforthisPump: 122.21MEILevelC‐Value[EULot11]ߟPump,BEPPEREff.Level10 132.58 75.33% 33.6040 128.07 79.84% 31.7070 124.85 83.06% 30.4780 122.94 84.97% 29.79TheseresultsdemonstratehowthecalculatedPERfortheexamplepumpwouldcomparetotheexamplePERefficiencylevelsateachMEIcutofflevel,comparedwiththeC‐valuecutoffvaluesforthesamepump.19SettingEfficiencyLevels•PER=ControlsMotorBarePumpDefault=1?DefaultMEI10MEI20...MEI70