May28,2015DocketNumber:EERE‐2015‐BT‐TP‐0007ConsumerCommWaterHtrs2015TP0007@ee.doe.govConversionFactorforConsumerandCommercialWaterHeaters2Welcome•Introductions(aroundtheroom)•RoleoftheFacilitator•GroundRules–Speakoneatatime.–Sayyournamefortherecord– therewillbeacompletetranscriptofthismeeting.–Beconcise– sharethe‘air‐time’.–Keepthefocushere– cellphonesonsilent;limitsidebarconversations.–Webinarparticipantsturnphoneonmute;“raiseyourhand”toberecognizedtospeak.•HousekeepingItems•AgendaReview•OpeningRemarks3ListeningViatheWebcast•TheDepartmentisbroadcastingthismeetingliveovertheInternet.•DOEisprovidingthewebcasttoaccommodatestakeholdersthatareunabletoattendthepublicmeetinginperson.•Thewebbroadcastallowsstakeholderstolisteninandviewtheslides.•Allstakeholdersareencouragedtosubmitwrittencommentsafterthepublicmeeting.4PurposeofthePublicMeeting•PresentDOE’sproposedconversionsforConsumerandCertainCommercialWaterHeaters.•Invitecommentonthenoticeofproposedrulemaking(NOPR)document.•Discussnextstepsintherulemaking.•Inviteparticipantstoprovidesummarycommentsorstatementsandraiseadditionalissuesfordiscussion.5IssuesforDiscussionIssueboxnumberingcorrespondstothelistofissuespublishedattheendoftheNOPRdocument,availableat:http://www.regulations.gov/#!documentDetail;D=EERE‐2015‐BT‐TP‐0007‐0002ThedeadlineforsubmittingcommentsisJune15,2015.Issue Box: DOE welcomes comments, data, andinformation concerning itsproposed conversions forConsumer and Certain Commercial Water Heaters.Issues that correspond to those raised in DOE’spublished material will be numbered in accordancewith that material. Whether invited by an issue box ornot, comments are welcome on any part of DOE’sanalysis.6OpeningRemarksMeetingparticipantsareinvitedtoprovideopeningremarksorstatementsatthistime.7PublicMeetingTopics1Regulatory History2Rulemaking Overview3Description of Issues Addressed in the NOPR4Closing Remarks8RegulatoryHistory•TheEnergyPolicyandConservationAct(EPCA)or1975(PublicLaw94‐163),asamended•EstablishedtheEnergyConservationProgramforConsumerProductsotherthanAutomobiles,whichincludesresidentialwaterheaters•EstablishedtheEnergyConservationProgramforCertainIndustrialEquipment,whichincludescommercialwaterheaters•DirectsDOEtoestablishtestproceduresinconjunctionwithenergyconservationstandards•TheAmericanEnergyManufacturingandTechnicalCorrectionsAct(AEMTCA)(PublicLaw112‐210)•RequiredthatDOEpublishafinalruleestablishingauniformefficiencydescriptorandaccompanyingtestmethodsforcoveredwaterheatersandcommercialwaterheatingequipment•RequiredthatDOEpublishafinalruleestablishingamathematicalconversionfactorforconvertingthemeasurementofefficiencyforcoveredwaterheatersfromtheexistingmetrictotheuniformenergydescriptor9RegulatoryHistory•May11,1998– ResidentialTestProcedureFinalRule.(63FR25996)•January12,2001– CommercialEnergyConservationStandardFinalRule.(66FR3336)•April16,2010– ResidentialEnergyConservationStandardFinalRule.(75FR20112)•May18,2012– CommercialTestProcedureFinalRule.(77FR28928)•July11,2014– UniformEfficiencyDescriptorFinalRule.(79FR40541)10PublicMeetingTopics1Regulatory History2Rulemaking Overview3Description of Issues Addressed in the NOPR4Closing Remarks11StepsintheRulemakingProcess•DOEpublisheda NOPRproposingthemathematicalconversiononApril14,2015.(80FR20116)•DOEisholdingtheNOPRpublicmeetingtoday,May28,2015.•DOEwillacceptcommentsontheNOPRfrominterestedparties.•Oralcommentsfromtoday’smeetingwithberecordedandtranscribed.•InterestedpartiescansubmitwrittencommentsuntilJune15,2015.NOPRFinalRule12PublicMeetingTopics1Regulatory History2Rulemaking Overview3Description of Issues Addressed in the NOPR4Closing Remarks13DescriptionofIssuesAddressedintheNOPR1Purpose and Scope3Mathematical Ratings Conversion2Considerations for Testing Selection4Energy Conservation Standards14PurposeandScopeoftheMathematicalConversionNOPR•Provideamethodforconvertingexistingratings,whereapplicable.•ConverttheApril2015standardsequationstothenewmetric.•DOEonlydevelopedconversionequationsforcategoriesofproductssubjecttostandardsandwherecommerciallyavailableunitsexist.15SummaryofKeyDatesandRequirementsDescriptionofDate Date RequirementsTestProcedureEffectiveDateJuly13,2015FornewbasicmodelsintroducedintocommerceonorafterJuly13,2015,manufacturersmustbegintotestandrepresentefficiencyusingtheUEFmetricpursuanttotheUEFtestprocedureandsamplingplan(oranAEDMthatisbasedontheUEFtestprocedure,whereallowed).ConversionFactorEffectiveDateDateofpublicationoftheconversionfactorfinalruleintheFederalRegisterForbasicmodelscertifiedusingtheEFmetricorthermalefficiencyand/orstandbylossmetricspriortoJuly13,2015,manufacturersmusttransitionalloftheirrepresentationstoUEFeitherbyapplyingtheconversionequationsorbyusingtheUEFtestprocedureandsamplingplan(oranAEDMthatisbasedontheUEFtestprocedure,whereallowed).ConversionFactorEndingDateOneyearafterpublicationofconversionfactorfinalruleAllbasicmodelsmustberatedintermsofUEFusingtheUEFtestprocedureandsamplingplanoranAEDMthatisbasedontheUEFtestprocedure,whereallowed.16DescriptionofIssuesAddressedintheNOPR1Purpose and Scope3Mathematical Ratings Conversion2Considerations for Testing Selection4Energy Conservation Standards17ConsiderationsforTestingSelection•DOEconsideredthefollowingwhenselectingunitstotest•NOxEmissions(Standard,Low,orUltra‐Low)•VentType(AtmosphericorPower)•ShortorTall•StandingPilotorNoStandingPilot•CondensingorNon‐Condensing•DOEalsoattemptedtotestmodelsthatspantherangeofavailableproductofferings•RatedStorageVolumeandInputRate•FHRorMaxGPM•RecoveryEfficiencyandEF•ThermalEfficiencyandStandbyLoss18Example:ConsumerGasStorage•DOEexaminedbasicmodels onthemarketandselectedmodelsfortestinginproportiontothemarket.19WaterHeatersTestedforNOPRWaterHeaterCategory ProductType NumberofUnitsTestedConsumer StorageGas‐fired 22Oil‐fired 2ElectricResistance 11HeatPump 6Tabletop 2ConsumerInstantaneousGas‐fired 17Oil‐fired 0Electric 5ResidentialDutyStorage Gas‐fired 7•DOEtested 72waterheatersforthisNOPR20DescriptionofIssuesAddressedintheNOPR1Purpose and Scope3Mathematical Ratings Conversion2Considerations for Testing Selection4Energy Conservation Standards21ConversionMethods•Conversionsweredevelopedfortheratings(i.e.,first‐hourrating(FHR),MaxGPM,andUniformEnergyFactor(UEF))•3methodswereexaminedforeachwaterheatercategory•StepRegression– Solelybasedontestdata•Everycombinationofindependentvariables(RatedStorageVolume,InputRate,FHR,MaxGPM,EF,thermalefficiency,standbyloss)wereexaminedandcomparedtoproducethebestconversion•Analytical– Solelybasedonmodeling•Equationswhichtheoreticallyrepresenthowthewaterheaterfunctions•RegressedAnalytical– basedoncombinationofmodeling/testdata•Analyticalequationsappliedandusedastheindependentvariableinasingletermregression•Root‐Mean‐Square(RMS)oftheErrorusedtocomparetheresultsofdifferentmethodsinordertochoosetheappropriateconversionmethods.22AnalyticalMethodsApproachOverview•DeliveryCapacity•MaxGPMmethodisbasedonabalanceofenergyinputtodeliveredenergyat125°Fand135°F•UEF•ConsumerStoragemethodisbasedontheWaterHeaterAnalysisModel(WHAM)•ConsumerInstantaneousmethoddevelopedbyDOEtoaccountforcyclinglossesandvalidatedwithtestdata•Residential‐DutyStoragemethodisbasedontheWHAMmodelwherethermalefficiencyandstandbylossroughlyreplacerecoveryefficiencyandthestandbylosscoefficient(UA)23SelectedConversionMethods•FormostUEFconversions,analytical‐regressionmethodused•Analyticalmodelcancapturetheunderlyingphysics•Regressioncancorrectforeffectsnotfullycapturedbytheanalyticalmodelbutrevealedinphysicaltesting.•FortheHeatPumpUEFconversion,regressionmethod(solelybasedontesting)wasusedbecausetheηrvalueisnotavailableinpublisheddatabases.•ForFHRconversions,regressionmethodused(solelybasedontesting)•FHRusedforConsumerandQusedforResidential‐Duty•Incertaincases,otherparametersresultedinslightlybetterRMSvalueshoweverthesewerenevermorethan1gallon•ForMaxGPMconversion,analyticalmethodused(solelybasedonmodeling)24RatedValueConversions– ConsumerStorageConsumerGas‐firedWaterHeaterNon‐Condensing,StandardNOxܴܪܨ ∗ 1.0085 ൌ ܴܪܨ	ݓܰ݁ா௫ܷܨܧ ൌ 0.4736 ൅ 0.2726 ∗ ܷܨܧௐு஺ெNon‐Condensing,LowNOxܴܪܨ ∗ 0.9112 ൅ 4.6894 ൌ ܴܪܨ	ݓܰ݁ா௫ܷܨܧ ൌ െ0.0126 ൅ 0.9966 ∗ ܷܨܧௐு஺ெNon‐Condensing,Ultra‐LowNOxܴܪܨ ∗ 0.8882 ൅ 2.9267 ൌ ܴܪܨ	ݓܰ݁ா௫ܷܨܧ ൌ 0.2673 ൅ 0.5811 ∗ ܷܨܧௐு஺ெCondensingܰ݁ݓ	ܪܨܴ ൌ െ0.7072 ൅ 0.9724 ∗ ܪܨܴா௫ܷܨܧ ൌ 0.0409 ൅ 0.9164 ∗ ܷܨܧௐு஺ெConsumerOil‐firedWaterHeaterN/Aܰ݁ݓ	ܪܨܴ ൌ 1.1018 ∗ ܪܨܴா௫ܷܨܧ ൌ െ0.0945 ൅ 1.1185 ∗ ܷܨܧௐு஺ெConsumerElectricWaterHeaterElectricResistanceܴܪܨ ∗ 0.7879 ൅ 11.9239 ൌ ܴܪܨ	ݓܰ݁ா௫ܷܨܧ ൌ 0.1227 ൅ 0.8673 ∗ ܷܨܧௐு஺ெHeatPumpܰ݁ݓ	ܪܨܴ ൌ െ2.3440 ൅ 0.9856 ∗ ܪܨܴா௫ܨܧ ∗ 1.5485 ൅ 1.1235െ ൌ ܨܧܷTabletopWaterHeaterN/Aܰ݁ݓ	ܪܨܴ ൌ 11.9239 ൅ 0.7879 ∗ ܪܨܴா௫ܷܨܧ ൌ 0.1227 ൅ 0.8673 ∗ ܷܨܧௐு஺ெ25ConversionResults– ConsumerStorageFHR40506070809010011012013040 50 60 70 80 90 100 110 120 130

Regression New FHR, gallonsMeasuredNewFHR,gallonsSlopeof1SNOxLNOxULNOxElectricHeatPumpTabletopOilShortNoStandingPilotPowerVentCondensing2622.22.42.62.82 2.2 2.4 2.6 2.8ConversionResults– ConsumerStorageUEF0.40.50.60.70.80.910.4 0.5 0.6 0.7 0.8 0.9 1

Analytical

‐ Regression UEFMeasuredUEFSlopeof1SNOxLNOxULNOxElectricHeatPumpTabletopOilShortNoStandingPilotPowerVentCondensingHeatPump27RatedValueConversions– ConsumerInstantaneousInstantaneousGas‐firedWaterHeaterܯܲܩ	ݔܽܯ ∗ 1.1467 ൌ ܯܲܩ	ݔܽܯ	ݓܰ݁ா௫ܨܧܷ ∗ 0.9052 ൅ 0.0783 ൌ ܨܧܷ௟௘ௗ௠௢InstantaneousElectricWaterHeaterܯܲܩ	ݔܽܯ ∗ 1.1467 ൌ ܯܲܩ	ݔܽܯ	ݓܰ݁ா௫ܨܧܷ ∗ 1.0079 ൌ ܨܧܷ௟௘ௗ௠௢28ConversionResults– ConsumerInstantaneousMaxGPM01234560123456

Analytical New Max GPMMeasuredNewMaxGPMSlopeof1LNOxULNOxElectricPowerVentCondensing29ConversionResults– ConsumerInstantaneousUEF0.750.80.850.90.9511.050.75 0.8 0.85 0.9 0.95 1 1.05

Analytical

‐ Regression UEFMeasuredUEFSlopeof1LNOxULNOxElectricPowerVentCondensing30RatedValueConversions– Residential‐DutyStorageResidential‐DutyCommercialGas‐firedWaterHeaterܳ ∗ 1.0226 ൅ 39.8144 ൌ ܴܪܨ	ݓܷܰ݁ܨܧ ൌ 0.1413 ൅ 0.7300 ∗ ܷܨܧௐு஺ெResidential‐DutyCommercialOil‐firedWaterHeaterܳ ∗ 1.0226 ൅ 39.8144 ൌ ܴܪܨ	ݓܷܰ݁ܨܧ ൌ 0.1413 ൅ 0.7300 ∗ ܷܨܧௐு஺ெ31ConversionResults– Residential‐DutyStorageFHR6070809010011012013014060 70 80 90 100 110 120 130 140

Regression FHR, gallonsMeasuredNewFHR,gallonsSlopeof1SNOxLNOxULNOxShortNoStandingPilotPowerVentCondensing32ConversionResults– Residential‐DutyStorageUEF0.450.50.550.60.650.70.750.80.850.90.950.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95

Analytical

‐ Regression UEFMeasuredUEFSlopeof1SNOxLNOxULNOxShortNoStandingPilotPowerVentCondensing33DescriptionofIssuesAddressedintheNOPR1Purpose and Scope3Mathematical Ratings Conversion2Considerations for Testing Selection4Energy Conservation Standards34EnergyConservationStandards(ECS)‐Approach1. ApplyConversiontogetaUEF valueforeveryunitonthemarket2. FindthecurrentminimumEForminimumThermalEfficiencyforeveryunitonthemarket3. FindthePercentDifferencefromthecurrentEnergyConservationStandard4. CalculatetheassociatedUEFmin5. FindthelinethroughtheUEFminvaluesൌ ܦܲܧ௙ܧ െ௡௜௠,௙ܧ௙ൌ ܦܲܧܶ െ ܧܶ௡௜௠ܧܶor35EnergyConservationStandard‐ExampleConsumerStorageGasMediumDrawPattern0.50.550.60.650.720 25 30 35 40 45 50 55

UEFRatedStorageVolume,gallonsUEFMinUEFStandardLine36EnergyConservationStandardsProductClass RatedStorageVolume DrawPattern UniformEnergyFactor*Consumer Gas‐firedStorage≥20galand≤55gal VerySmall0.3263 െ ሺ0.0019	ݔ	ܸ௥ሻLow0.5891 െ ሺ0.0019	ݔ	ܸ௥ሻMedium0.6326 െ ሺ0.0013	ݔ	ܸ௥ሻHigh0.7128 െ ሺ0.0025	ݔ	ܸ௥ሻ>55galand≤100gal VerySmall0.5352 െ ሺ0.0007	ݔ	ܸ௥ሻLow0.7375 െ ሺ0.0009	ݔ	ܸ௥ሻMedium0.7704 െ ሺ0.0010	ݔ	ܸ௥ሻHigh0.7980 െ ሺ0.0010	ݔ	ܸ௥ሻConsumer Oil‐firedStorage≤50gal VerySmall0.2267 െ ሺ0.0014	ݔ	ܸ௥ሻLow0.4867 െ ሺ0.0006	ݔ	ܸ௥ሻMedium0.6016 െ ሺ0.0012	ݔ	ܸ௥ሻHigh0.6529 െ ሺ0.0005	ݔ	ܸ௥ሻConsumer ElectricStorage≥20galand≤55gal VerySmall0.8268 െ ሺ0.0002	ݔ	ܸ௥ሻLow0.9393 െ ሺ0.0004	ݔ	ܸ௥ሻMedium0.9683 െ ሺ0.0007	ݔ	ܸ௥ሻHigh0.9656 െ ሺ0.0004	ݔ	ܸ௥ሻ>55galand≤120gal VerySmall1.2701 െ ሺ0.0011	ݔ	ܸ௥ሻLow1.9137 െ ሺ0.0011	ݔ	ܸ௥ሻMedium2.0626 െ ሺ0.0011	ݔ	ܸ௥ሻHigh2.1858 െ ሺ0.0011	ݔ	ܸ௥ሻ37EnergyConservationStandards‐ContinuedProductClass RatedStorageVolume DrawPattern UniformEnergyFactor*Consumer TabletopStorage≥20galand≤100gal VerySmall0.6808 െ ሺ0.0022	ݔ	ܸ௥ሻLow0.8770 െ ሺ0.0012	ݔ	ܸ௥ሻMedium0.9063 െ ሺ0.0009	ݔ	ܸ௥ሻHigh0.9302 െ ሺ0.0006	ݔ	ܸ௥ሻConsumer Gas‐firedInstantaneous<2gal All0.8036 െ ሺ0.0019	ݔ	ܸ௥ሻConsumer ElectricInstantaneous<2gal All0.9192 െ ሺ0.0013	ݔ	ܸ௥ሻResidential‐Duty GasStorageAll VerySmall0.3261 െ ሺ0.0006	ݔ	ܸ௥ሻLow0.5219 െ ሺ0.0008	ݔ	ܸ௥ሻMedium0.5585 െ ሺ0.0006	ݔ	ܸ௥ሻHigh0.6044 െ ሺ0.0005	ݔ	ܸ௥ሻResidential‐Duty OilStorageAll VerySmall0.3206 െ ሺ0.0006	ݔ	ܸ௥ሻLow0.5577 െ ሺ0.0019	ݔ	ܸ௥ሻMedium0.6027 െ ሺ0.0019	ݔ	ܸ௥ሻHigh0.6446 െ ሺ0.0018	ݔ	ܸ௥ሻ38PublicMeetingSlidesTopics1Regulatory History2Rulemaking Overview3Description of Issues Addressed in This NOPR4Closing Remarks39RequestforAdditionalData•Driverfortheconversionfactorrulemakingistestdata•DOEreceivedAHRItestdataonMay14,2015•DOEneedsadditionaldetailaboutthetestedunitsinordertoproperlyincorporateintotheanalysis•AnyadditionalinformationmustbesubmittedbyJune15,2015tobeconsideredinthefinalrule.40ClosingRemarksMeetingparticipants areinvitedtoprovideclosingremarksatthistime.41HowtoSubmitWrittenComments•Inallcorrespondence,pleaserefertotheconversionfactorrulemakingby:•ConversionFactorforConsumerandCommercialWaterHeaters•DocketNumber:EERE‐2015‐BT‐TP‐0007•RegulatoryIdentificationNumber(RIN):1904‐AC91•Email:ConsumerCommWaterHtrs2015TP0007@ee.doe.govCommentperiodcloses:June15,2015– 11:59PMEDThttp://www1.eere.energy.gov/buildingsPostal:Ms.BrendaEdwardsU.S.Department ofEnergyBuildingTechnologiesOffice,MailstopEE‐5B1000IndependenceAvenue,SWWashington,DC20585‐0121Courier:Ms. BrendaEdwardsU.S.DepartmentofEnergyBuildingTechnologiesOffice950L’EnfantPlaza,SW,6thFloorWashington,DC20024Tel:(202)586‐2945