Test Procedures for Clothes DryersThe Parker Ranch installation in HawaiiNotice of Proposed RulemakingPublic MeetingStephen WitkowskiDepartment of EnergyEnergy Efficiency & Renewable Energy1 | Test Procedure for Clothes Dryerseere.energy.govPublic MeetingEmail: wes.anderson@ee.doe.govFebruary 6, 2013IntroductionSteps in the Test Procedure RulemakingFi lnaRuleNOPR•NOPR published on January 2, 2013•NOPR Public Meeting today, February 6, 2013•Comments on NOPR from interested parties– Transcript records oral comments from today’s public meeting– Written comments (comment period closes March 18, 2013)•DOE reviews and considers all commentsDOEreviewsandconsidersallcomments•Final Rule Publication2 | Test Procedure for Clothes Dryerseere.energy.govIntroductionCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements3 | Test Procedure for Clothes Dryerseere.energy.govIntroduction•Test Procedure Final Rule. 42 FR 46145, Sept. 14, 1977.Regulatory History– Established clothes dryer test procedure in 10 CFR part 430, subpartB, appendix D.–Includedprovisions for measuringthe energyfactor(EF).g gy ( )•Test Procedure Final Rule. 76 FR 972, Jan. 6, 2011.– Amended clothes dryer test procedure and established appendix D1.–Incorporated provisions from IEC Standard 62301 (First Edition) forIncorporatedprovisionsfromIECStandard62301(FirstEdition)formeasuring standby and off mode power consumption.– Added test provisions for ventless dryers and changes to reflectusage patterns and capabilitiesusagepatternsandcapabilities.– Established new energy use metric, combined energy factor (CEF).•Manufacturers must use the test procedures in appendix D1 todemonstrate compliance with the amendedenergy conservation4 | Test Procedure for Clothes Dryerseere.energy.govdemonstratecompliancewiththeamendedenergyconservationstandards as of Jan. 1, 2015.Introduction•January 2011 TP Final Rule did not adopt amendments to moreRegulatory History - Continuedaccurately measure the effects of automatic cycle termination.•Request for Information Notice. 76 FR 50145, Aug. 12, 2011.–DOE requested information and comment on methods for moreaccurately measuring automatic cycle termination.5 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements6 | Test Procedure for Clothes Dryerseere.energy.govCovered Products•10 CFRpart 430.2provides the followingproduct definitions:Products Covered by This Test Procedure Rulemakingp p gp–Electric clothes dryermeans a cabinet-like appliance designed to dryfabrics in a tumble-type drum with forced air circulation. The heatsource is electricityand the drum and blower(s)are driven byan() yelectric motor(s).–Gas clothes dryermeans a cabinet-like appliance designed to dryfabrics in a tumble-type drum with forced air circulation. The heatsource is gas and the drum and blower(s) are driven by an electricmotor(s).•DOE is not proposing any amendments to these product definitions.7 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements8 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•Current DOE test procedures in appendices D and D1 provide a fieldJanuary 2011 TP Final Ruleuse factor to account for automatic cycle termination.– Does not distinguish between type of sensors and the accuracy andsophistication of the control system.•In the January 2011 TP Final Rule, DOE did not adopt amendmentsto more accurately measure automatic cycle termination.– DOE testing showed that all tested dryers significantly over-dried theDOE test load to near bone dry.– The measured EF values using the proposed test method (with a fielduse factor of 1.0) were significantly lower than the EF values usingthe existing appendix D test procedure.9 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•Previously proposed amendments did not adequately measure theJanuary 2011 TP Final Ruleenergy consumption for automatic termination control systems– Automatic termination control dryers may be designed to stop thecycle when a load of varying weights, composition, and size has ahi h RMC th th RMC bt i d i th d t tihigherRMCthantheRMCobtainedusingthe proposedautomaticcycle termination test procedure with the existing DOE test load.10 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•August 2011 RFI sought information and comments on automaticAugust 2011 RFIcycle termination test methods.– Characteristics of loads of varying weights, composition, and size;– Accuracy of automatic cycle termination sensors and controls;– Target final RMC used by manufacturers to maintain consumersatisfaction;– Effects of characteristics of water for wetting load; and– Automatic termination cycle settings selected by consumers.•Joint Petition stated that DOE should amend the test procedure toincludeprovisions to account for the effectiveness of automaticcycle termination.– Measure full cycle, including cool-down, using a target RMC of 2percent.11 | Test Procedure for Clothes Dryerseere.energy.gov– Revise relevant energy conservation standards.Automatic Cycle Termination•DOE tested 20 clothes dryers to evaluate potential test procedureProduct Testingamendments.•DOE conducted testing using both the current DOE test load andIEC/AHAM test load.–DOE momie test cloths are each 24” x 36” and are a blend of 50/50cotton/polyester.– IEC Standard 61121 and AHAM HLD–1–2009 test load consists ofcotton bed sheets, towels, and pillowcases.•Test cycle settings:– “Normal” automatic cycle termination program.– Where the temperature setting can be chosen independently of theprogram, the highest level was selected.–Where the dryness level settingcan be chosen independentlyof the12 | Test Procedure for Clothes Dryerseere.energy.govy g pyprogram, it was set to the “normal” or “medium” level.Automatic Cycle Termination•Test cycle using DOE test load:Product Testing– Clothes dryer allowed to run until the completion of the cycle,including the cool-down period.– If the final RMC was below 2 percent using the DOE test load, thetest was considered valid.– If the final RMC was higher than 2 percent, the test was re-run usingthe highest dryness level.– 2-percent RMC threshold based on data presented in Joint Petitionregarding RMC levels acceptable to consumers.•Test cycle using IEC/AHAM test load:– Similar to test cycle with DOE test load.– Threshold value of 5 percent for the final RMC because of the morevaried composition of test load.13 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationAutomatic Cycle Termination Test ResultsDOE TestP dAtdDOE T t L dAutodry – IEC/AHAM TestL dProduct ClassProcedure(Appendix D1)– Average CEF(lbs/kWh)Autodry–DOETestLoadLoadAverage CEF(lbs/kWh)Average %ChangeAverage CEF(lbs/kWh)Average %ChangeElectric, Standard 3.79 3.16 -16.6 3.03 -20.0VentedElectric, Compact (240 V)3.54 2.79 -21.1 2.68 -24.4Electric, Compact (120 V)3.75 2.18 -41.9 2.42 -35.6Gas 3.39 2.92 -13.9 2.79 -17.7V tlElectric, Compact (240 V) 2.98 2.73 -8.4 2.63 -11.9•DOE Test Load – Change in measured CEF ranged from -3.5 to -41.9percentVentlessElectric, CombinationWasher/Dryer2.54 2.45 -3.9 2.29 -9.7percent.•IEC/AHAM Test Load – Change in measured CEF ranged from -6.1 to-40.3 percent.14 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationAutomatic Cycle Termination Test ResultsDOE TestDOETest ProcedureDOETestProcedure(Appendix D1)DOETestProcedure(Appendix D1) withIEC/AHAM Test LoadAutodry – DOETest LoadAutodry – IEC/AHAMTest LoadRange of Average FinalRMC- - 0.4 – 2.0 1.3 – 4.7Test-to-Test Variation–Standard Error0.87 1.02 1.87 2.07Lab-to-LabReproducibility–- -3 04 7Percentage Difference3.04.715 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•A number of units were tested at an independent test lab usingAutomatic Cycle Termination Energy Consumption versus RMCautomatic cycle termination test method with DOE test load.– Measured and recorded the energy consumption and estimatedinstantaneous RMC throughout the test cycle.Product ClassTestUnitAutodry SensorTechnologyEnergy Consumption (kWh)5% RMC 2% RMCEnd of Cycle (MeasuredRMC (%))1Mit1 9452 0702 624 (1 2)Vented ElectricStandard1Moisture1.9452.0702.624(1.2)2 Temperature 2.068 2.233 3.119 (0.9)4 Moisture 2.160 2.318 2.405 (0.7)6 Moisture 2.091 2.280 3.141 (1.9)Vented ElectricCompact (240V)10 Temperature 0.823 0.875 1.418 (2.0)Vented Gas13 Moisture 2.375 2.569 2.905 (0.8)15 Moisture 2.347 2.532 3.161 (1.2)16 | Test Procedure for Clothes Dryerseere.energy.gov17 Moisture 2.300 2.482 2.843 (1.2)Automatic Cycle Termination•Portion of dry cycle when load has initially reached 5-percent RMCVented Electric Standard Automatic Termination Test Cycle3.153.35

h)= 2% RMC2.752.95

s umption (kWElec Std #1Elec Std #2El Std #42.352.55

Energy Con sElecStd#4Elec Std #61.952.150:20 0:27 0:34 0:41 0:48 0:56Time(hours:minutes)5% RMC17 | Test Procedure for Clothes Dryerseere.energy.gov( )Automatic Cycle TerminationVented Gas Automatic Termination Test Cycle3.13.23.3

W h)Gas #13Gas #15Gas #17= 2% RMC2.82.93

s umption (k W2.52.62.7

Energy Con s2.32.40:20 0:23 0:25 0:28 0:31 0:34 0:37 0:40 0:43Time(hours:minutes)5% RMC18 | Test Procedure for Clothes Dryerseere.energy.gov( )Automatic Cycle Termination•DOE applied a field use factor to account for the measured energyAutomatic Cycle Termination Field Use Factorconsumption at the end of the automatic termination cycle dryingthe DOE test load below 2-percent RMC.– Field use factor of 0.80.Product ClassTestUnitEnergy Consumption (kWh)2% RMCEnd of Test -MeasuredEnd of Test -Field Adjusted1 2.070 2.624 2.09922 2333 1192 495Vented ElectricStandard22.2333.1192.4954 2.318 2.405 1.9246 2.280 3.141 2.513Vented ElectricCompact (240V)10 0.875 1.418 1.134Compact(240V)Vented Gas13 2.569 2.905 2.32415 2.532 3.161 2.52817 2.482 2.843 2.27419 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•IEC Standard 61121 Fourth EditionIEC Water Supply Testing– Characteristics of water used for wetting the test load may influencethe results for automatic termination dryers with moisture sensors.Water typeProperty UnitWatertypeStandard softwaterStandard hardwaterTotal hardnessmmol/l0 50±0 202 50±0 20Totalhardness(Ca2+/Mg2+)0.50±0.202.50±0.20Conductivity(at 20°C)μS/cm 150 ± 50 750 ± 150•DOE conducted testing on a select number of dryers with therequirements for standard soft water.20 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationIEC Water Test Results – DOE Test LoadDOE Test Autodry Appendix D1 Autodry IEC Soft Water –Product ClassProcedure(Appendix D1)– Average CEF(lbs/kWh)Water – DOE Test Load DOE Test LoadAverage CEF(lbs/kWh)Average %ChangeAverage CEF(lbs/kWh)Average %ChangeElectric, Standard 3.75 3.17 -15.3 3.17 -15.3VentedElectric, Compact (240 v)3.54 2.79 -21.1 2.84 -19.8Electric, Compact (120 v)3.75 2.18 -41.9 2.27 -39.6Gas 3.39 2.97 -12.4 2.96 -12.7El t i C t (240)2 982 738 42 854 3VentlessElectric,Compact(240v)2.982.73-8.42.85-4.3Electric, CombinationWasher/Dryer2.28 2.19 -3.9 2.19 -3.921 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationIEC Water Test Results – IEC/AHAM Test LoadDOE Test Autodry Appendix D1 Water Autodry IEC Soft Water –Product ClassProcedure(Appendix D1)– Average CEF(lbs/kWh)– IEC/AHAM Test Load IEC/AHAM Test LoadAverage CEF(lbs/kWh)Average %ChangeAverageCEF(lbs/kWh)Average %ChangeElectric, Standard 3.75 3.01 -19.5 3.06 -18.3VentedElectric, Compact (240 v)3.54 2.68 -24.4 2.64 -25.5Electric, Compact (120 v)3.75 2.42 -35.6 2.48 -33.8Gas 3.39 2.82 -16.7 2.85 -15.9El t i C t (240)2 982 6311 92 815 6Thdifi ti t th t l ifi d i IEC St d dVentlessElectric,Compact(240v)2.982.63-11.92.81-5.6Electric, CombinationWasher/Dryer2.28 2.14 -6.1 2.15 -5.8•The modificationstothe water supply specifiedinIECStandard61121 did not have a definitive effect on the measured CEF.22 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationIEC Water Supply Test ResultsDOE Test Load IEC/AHAM Test LoadAutodryAutodryAppendix D1WaterAutodry IEC SoftWaterAutodryAppendix D1WaterAutodry IEC SoftWaterRange of Average FinalRMC (%)0.4 – 2.0 0.5 – 2.0 1.3 – 4.7 1.2 – 7.1Test-to-Test Variation –Standard Error (%)1.96 1.89 2.31 2.31Lab-to-LabReproducibility –- - 4.4 2.7•No definitive correlations between the average final RMC and thewater supply specificationsPercentage Difference (%)watersupplyspecifications.•No significant difference in repeatability between appendix D1 andIEC soft water supply tests.Percentage difference in test res lts from lab to lab is ithin the23 | Test Procedure for Clothes Dryerseere.energy.gov•Percentagedifferenceintestresultsfromlabtolabiswithinthetest-to-test variation within a lab for the IEC/AHAM test load.Automatic Cycle Termination•DOE is not proposing amendments to require modifications to theIEC Water Supplywater supply used for wetting the test load according to IECStandard 61121.•DOE may consider amendments if data is made available showingi d t bilit d d ibilit i th difi d timprovedrepeatability andreproducibility usingthe modifiedwatersupply.24 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•Automatic Termination Control DryerAutomatic Cycle Termination Proposed Amendments - Definitions– A clothes dryer which can be preset to carry out at least oneoperation to be terminated by means of a system assessing, directlyor indirectly, the moisture content of the load.–An automatic termination control dryer with supplementary timer orthat may also be manually controlled shall be tested as an automatictermination control dryer.•Timer Dryer– A clothes dryer that can be preset to carry out at least one operationto be terminated by a timer, but may also be manually controlled, anddoes not include any automatic termination function.25 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•DOE is not proposing changes to the test load composition.Automatic Cycle Termination Proposed Amendments – Test Load•DOE proposes to change the starting RMC from 57.5% ± 3.5% to57.5% ± 0.33%.– Allowing a wide range, such as ± 3.5%, would result in significantlydifferent results using the proposed test method.Item 1DOE seeks comment on the proposal to continue using theDOE test load. DOE welcomes additional data on the test-to-testrepeatabilityand lab-to-lab reproducibilityof both the DOE andyyIEC/AHAM test load.26 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•The “normal” cycle program shall be selected.Proposed Test Cycle for Automatic Termination Control Dryers– For dryers that do not have a “normal” program, the cyclerecommended by the manufacturer for drying cotton or linen clothesshall be used.•Where the drying temperature can be chosen independently of theprogram, it shall be set to the maximum temperature setting.•Where the dryness level setting can be chosen independently of theprogram, it shall be set to the “normal” or “medium” dryness levelsetting.– If such designation is not provided, the dryness level shall be set atthe mid-point between the minimum and maximum settings.•Cycle settings shall be recorded.27 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•Dryer allowed to run until completion of the cycle, including theProposed Test Cycle for Automatic Termination Control Dryerscool-down period.•If the RMC is higher than 2 percent, the test would be invalid andmust be re-run but using the highest dryness level setting.–Final RMC of 2 percent using the DOE test load would be morerepresentative of dryers currently on the market and representative ofthe maximum consumer-accepted final RMC.•Field use factor in per-cycle energy use calculation changed from1.04 to 0.80 for automatic termination control dryers.– Based on the energy consumption versus estimated RMC data.– Account for the measured energy consumption at the end of theautomatic termination cycle drying the DOE test load below 2-percentRMC.28 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle TerminationRequest for Comment on Automatic Termination Test CycleItem 2DOE seeks comment on the proposed amendments to moreaccurately measure the effects of automatic cycle termination. DOEspecifically requests comment on the proposed maximum allowablespecificallyrequestscommentontheproposedmaximumallowablefinal RMC of 2 percent using theDOE test load. DOE further seekscomment on the proposed test cycle program settings, temperaturesettings,and dryness level settings. DOE also requests comment and, y g qadditional test data on the proposed field use factor of 0.80 forautomatic cycle termination clothes dryers.29 | Test Procedure for Clothes Dryerseere.energy.govAutomatic Cycle Termination•Continue to use the test method in appendix D1 with the followingProposed Test Cycle for Timer Dryersmodifications:– Change final RMC from 2.5 – 5.0 percent to 1.0 – 2.5 percent RMC.– Added clarification that the dryer should not be stopped intermittentlyin the middle of the test cycle for any reason.– Normalization in the per-cycle energy consumption calculationchanged to represent the new target RMC of 2 percent.•DOE is not proposing any changes to the field use factor of 1.18.•DOE is not proposing to include the cool-down period.–Includingthe cool-downperiod would add significant testingburden toggdetermine and preset the appropriate time setting.– Different combinations of timed dry cycle length and cool-down periodmaybe selected to drythe load to the same final RMC.30 | Test Procedure for Clothes Dryerseere.energy.govy yAutomatic Cycle TerminationRequest for Comment on Timed Dry Test CycleItem 3DOE seeks comment on the proposed test method for timerdryers. In particular, DOE seeks comment on the proposed final RMCrange of 1.0 – 2.5 percent withthe normalization of the per-cycleenergy consumption to represent the energy consumption required todry the test load to 4-percent RMCchanged to represent the new targetRMC of 2 percent. DOE also seeks comment on the continued use ofth 1 18 fi ld f t i thl tithe1.18fieldusefactorinthe per-cyce energy consumptioncalculation for timer dryers. DOE welcomes comment on thedetermination to not measure the cool-down period for the timed drytest cycle due to the associated test burden and difficulties withtestcycleduetotheassociatedtestburdenanddifficultieswithdetermining the appropriated timed dry cycle time. DOE also welcomescomment on the proposed amendment toclarify that the clothes dryershould not be stopped intermittently in the middle of the timed dry test31 | Test Procedure for Clothes Dryerseere.energy.govshouldnotbestoppedintermittentlyinthemiddleofthetimeddrytestcycle for any reason.Automatic Cycle TerminationRequest for Comment on Modified Water for Wetting Test LoadItem 4DOE welcomes comment on the determination to not proposeamendments to include requirements for the characteristics of thewater supply used for wetting the test load prior to the test cycle DOEwatersupplyusedforwettingthetestloadpriortothetestcycle.DOEwelcomes additional data evaluating the repeatability andreproducibility of test results using both appendix D1 water and watermodified accordingto the requirements in IEC Standard 61121.q32 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements33 | Test Procedure for Clothes Dryerseere.energy.govIncorporating IEC Standard 62301(Second Edition)•The January 2011 TP Final Rule incorporated relevant provisionsIEC Standard 62301 (Second Edition)from IEC Standard 62301 (First Edition) for measuring standby modeand off mode power.– Additional clarifications to provide a stabilization period of 30 – 40i t f ll d b 10 i t t i dminutesfollowedby a10minute energy use measurementperiod.– Incorporated mode definitions based on IEC Standard 62301 SecondEdition Committee Draft for Vote (CDV).•For this NOPR, DOE decided to consider IEC Standard 62301(Second Edition), which published on January 27, 2011.– Internationally accepted test procedure.– Provides clarifications to certain sections as compared to the FirstEdition.34 | Test Procedure for Clothes Dryerseere.energy.govIncorporating IEC Standard 62301(Second Edition)•DOE proposes to incorporate by reference IEC Standard 62301Power Measurement Accuracy(Second Edition), section 4.4, “Power measuring instruments”– More comprehensive specification of the required powermeasurement accuracy.–Requirements to measure the crest factor and power factor of theinput power, and to calculate the maximum current ratio (MCR) andthe allowable uncertainty in MCR.•Allowable uncertainty is the sameor less stringent than the allowableuncertainty specified in the First Edition.• Change in the allowable uncertainty maintains sufficient accuracy ofmeasurements without placing undue demands on the instrumentationmeasurementswithoutplacingunduedemandsontheinstrumentation.35 | Test Procedure for Clothes Dryerseere.energy.govIncorporating IEC Standard 62301(Second Edition)•IEC Standard 62301 (Second Edition) Power Supply and MeasuringPower SupplyInstrument Requirements– Section 4.3.2 requires that the harmonic content of the voltage supplybe recorded during the test.–Section 4.4.1 requires measurement of the crest factor and maximumcurrent ratio.– Section 4.4.3 requires measurement of the average power orintegrated total energy consumption.•Industry-standard instruments are unable to measure harmoniccontent or crest factor while measuring average power or totalintegrated energy consumption.– DOE proposes that it would be acceptable to measure the totalharmonic content, crest factor, and maximum current ratioi di t l b f dftth t ltt t36 | Test Procedure for Clothes Dryerseere.energy.govimmediatelybefore andafterthe actualtestmeasurement.Incorporating IEC Standard 62301(Second Edition)•Section 5.3 of IEC Standard 62301 (Second Edition)Test Method– Contains more detailed techniques to evaluate the powerconsumption stability and to measure the power consumption forloads with different stability characteristics.–Sampling, average reading, and direct meter reading methods.•DOE proposes to require the use of the sampling method in section5.3.2 of the Second Edition for all standby and off mode powermeasurements.– Test duration is approximately the same or similar to the allowablealternative methods.– Does not require classification of the nature of the powerconsumption (e.g., stable or unstable, cyclic or non-cyclic) in advanceof the test.37 | Test Procedure for Clothes Dryerseere.energy.govIncorporating IEC Standard 62301Request for Comment on Incorporation by Reference of IECStandard 62301 (Second Edition)Item 5DOE invites comment on the adequacy of IEC Standard 62301(Second Edition) to measure standby mode and off mode powerconsumption for clothes dryers, and the suitability of incorporating intoDOE regulations specific provisions from IEC Standard 62301 (SecondEdition). DOE also invites comment on the acceptability of measuringthe total harmonic content, crest factor, and maximum current ratiobefore and after the actual test measurement if the power measuringbeforeandaftertheactualtestmeasurementifthepowermeasuringinstrument is unable to perform these measurements during the actualtest measurement.38 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements39 | Test Procedure for Clothes Dryerseere.energy.govTechnical Correction•Thecalculation of the percycle combined total energyTechnical Correction to the Per-Cycle Combined Total EnergyConsumption Calculation•Thecalculationoftheper-cyclecombinedtotalenergyconsumption contains a reference to an incorrect section number.– The per-cycle standby mode and off mode energy consumption,Ewhich is contained in section 4 5 is incorrectly referenced inTSO,whichiscontainedinsection4.5,isincorrectlyreferencedinthe per-cycle combined total energy consumption as section 4.7.•DOE proposes to correct this section number reference.Item 6DOE seeks comment on the proposed amendments to correctthe section number reference for the percycle standby mode and offthesectionnumberreferencefortheper-cyclestandbymodeandoffmode energy consumption contained inthe calculation of the per-cyclecombined total energy consumption.40 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements41 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Inquiry regardinghow to test a clothes dryerwith timeddry cycleCycle SettingsInquiryregardinghowtotestaclothesdryerwithtimeddrycyclelength settings, but no temperature settings on the control panel.– Section 3.3 in appendix D specifies that the maximum temperaturesettingand,if a tested unit is equipped with a timer,the maximum, q pp ,time setting must be used for the drying test cycle.•DOE proposes to clarify appendices D and D1 (proposed timeddrytest method).)– If a clothes dryer does not have a separate temperature settingselection on the control panel, the maximum time setting should beused for the drying test cycle.42 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Inquiryregarding how to test adryer with anoptional cycleCycle Settingsregardinghowtotestadryerwithanoptionalcyclesetting, other than the temperature/time settings, that is activatedby default in the condition as shipped by the manufacturer.•Appendices D and D1(for timer dryers):y– DOE proposes to clarify that the test procedures specifyrequirements only for the temperature setting and time setting, anddo not specifymodifications to anyother optional settings that doy y p gnot affect those setting.•Appendix D1 (for automatic termination control dryers):–DOE proposesto clarifythatthe test procedures specifyDOEproposestoclarifythetestproceduresspecifyrequirements only for the automatic termination cycle program,temperature setting, and dryness setting, and do not specifymodifications to any other optional settings that do not affect the43 | Test Procedure for Clothes Dryerseere.energy.govthose settings.Clarifications to Test Conditions•Section 2.3.2 in appendicesDand D1:Gas Supply RequirementsSection2.3.2inappendicesDandD1:– The gas supply to the clothes dryer should be maintained at anormal inlet test pressure at 7 to 10 inches of water column.–Thehourly Btu rating of the burner shall be maintained within±5hourlyBturatingoftheburnershallbemaintainedwithinpercent of the manufacturer specified rating.•Inquiry noting that during testing, the dryer under test did notmeet theBtu rating requirement underthe allowable range in gasmeettheBturatingrequirementundertheallowablerangeingasinlet test pressure.– DOE proposes to clarify that if the requirement for the hourly Bturating of the burnercannotbe achieved under the allowable rangeratingoftheburnerbeachievedundertheallowablerangein gas inlet test pressure, the orifice of the gas burner should bemodified as necessary to achieve the required Btu rating.44 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Section 2.3.2 inappendicesDand D1:Gas Supply RequirementsSection2.3.2inappendicesDandD1:– If a clothes dryer is equipped with a gas appliance pressureregulator, the regulator outlet pressure at the normal test pressureshall be approximatelythat recommended bythe manufacturer.y y•Test procedures for similar gas heating products, such as gaswater heaters, specifies that the regulator outlet pressure must bewithin ± 10percent of the value specified bythe manufacturer.py•DOE proposes to clarify the term “approximately” by specifyingthat the regulator outlet pressure shall be within ± 10 percent ofthe value specified by the manufacturer.45 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Inquiry requesting clarification on section 2.1inappendicesDandConsole LightsInquiryrequestingclarificationonsection2.1inappendicesDandD1:– All console lights or other lighting systems that do not consumemore than 10 watts shall be disconnected duringthe clothes dryeryactive mode test cycle.•Originally adopted in the September 1977 Final Rule.–Appliedto an older generation ofdryers thatused task lights totoanoldergenerationofdryersthatusedtasklightstoilluminate the area of the dryer for consumers doing the laundrythat did not provide any function related to the drying process.•Newer generationdryersequipped with electronic controls mayNewergenerationequippedwithelectroniccontrolsmayhave fully integrated control setting indicator.– Indicator lights showing the cycle progression, temperature ordryness settings,or other cycle functions.46 | Test Procedure for Clothes Dryerseere.energy.govy g, yClarifications to Test Conditions•DOE proposestoclarify that:Console LightsDOEproposestoclarifythat:– All lights, such as task lights, that do not provide any informationrelated to the drying process on the clothes dryer which do notconsume more than 10 watts duringthe clothes dryer test cycleyshall be disconnected for the active mode test cycle.– Control setting indicator lights that cannot be turned off during thetest cycle shall not be disconnected duringthe active mode testgcycle.47 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Inquiry requesting clarification on section 3.1inappendicesDandDrum Capacity MeasurementInquiryrequestingclarificationonsection3.1inappendicesDandD1:– When measuring drum capacity, the drum shall be filled with waterto a level determined bythe intersection of the doorplane and theploading port.– Volume should be added or subtracted as appropriate dependingon whether theplastic bagused for the measurementprotrudesg pinto the drum interior.•DOE proposes to clarify that:–Theintersection of the door plane and the loading port refers to theintersectionofthedoorplaneandtheloadingportreferstotheuppermost edge of the drum that is in contact with the door seal.– Volume should be added or subtracted from the measured water fillvolume based on the space in the drum interior occupied bythe48 | Test Procedure for Clothes Dryerseere.energy.govp pydoor or the space above the uppermost edge of the drum within acurved door.Clarifications to Test Conditions•Section2.4.1–Test Cloth Weighing Scale:Weighing Scale Instrumentation2.4.1TestClothWeighingScale:– Range of 0 to a maximum of 30 lbs– Resolution of at least 0.2 ouncesMaximumerror no greater than 0 3 percent of any measured value–errornogreaterthan0.3percentofanymeasuredvaluewithin the range of 3 to 15 lbs•Section 2.4.1.2 – Drum Capacity Weighing Scale:Rf 0 t i f 500lb–ange of0to a maximum of500s– Resolution of 0.50 lb– Maximum error no greater than 0.5 percent of the measured value•DOE received an inquiry requesting clarification of theserequirements.49 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Scalesfor weighing the test cloth may have maximum capacityWeighing Scale Instrumentationforweighingthetestclothmayhavemaximumcapacityhigher than 30 pounds, but still meet the requirements forresolution and maximum error within the range of 3 to 15 pounds.•A clothes dryer,when filled with water for the drum capacity, p ymeasurement, could exceed 500 pounds.•DOE proposes to allow a higher maximum scale range, 60 poundsfor weighingthe test cloth and 600pounds for drum capacityg p p ymeasurements.– The resolution and maximum error requirements would remainunchanged.50 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•Inquiry requesting clarification of section 2.4.4inappendicesDRelative Humidity MeasurementInquiryrequestingclarificationofsection2.4.4inappendicesDand D1:– Dry and wet bulb psychrometer used for measuring the ambienthumidityshall have an error nogreater than ± 1 °F.g•DOE recognizes that relative humidity meters may be anacceptable means to measure the ambient humidity.–Somehumidity meters may express error tolerances in terms of thehumiditymetersmayexpresserrortolerancesintermsofthedry and wet bulb temperatures, while others express errortolerances in terms of percent relative humidity.–DOEdetermined, based on the allowable range in ambientdetermined,basedontheallowablerangeinambienttemperature and humidity, that a ± 1°F tolerance for the dry and wetbulb temperatures would translate to a tolerance between ± 2percent and ± 4 percent relative humidity.51 | Test Procedure for Clothes Dryerseere.energy.govClarifications to Test Conditions•DOE proposes that a relative humidity meter with a maximumRelative Humidity MeasurementDOEproposesthatarelativehumiditymeterwithamaximumerror tolerance expressed in °F equivalent to the requirements thedry and wet bulb psychrometer or with a maximum error toleranceof ± 2 percent relative humidity would be acceptable for testing.Item7. DOE seeks comment on the proposed amendments toclarify:.DOEseekscommentontheproposedamendmentstoclarify:(1) the cycle settings used for the test cycle, (2) the requirements forthe hourly Btu rating of the burner andthe regulator outlet pressure forclothes dryers equipped with agas appliance pressure regulator,(3)g g ()the installation conditions for console lights, (4) the method formeasuring the drum capacity, (5)the maximum allowable scale range,and (6) the allowable use of a relative humidity meter.52 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements53 | Test Procedure for Clothes Dryerseere.energy.govEffects of Proposed Amendments•DOE must determine to what extent, if any, the proposed testEffects of Proposed Amendments on Energy ConservationStandardsDOEmustdeterminetowhatextent,ifany,theproposedtestprocedure would alter the measured energy efficiency of anycovered product as determined under the existing test procedure.–If DOE determines that the amended testprocedure would alter themeasured efficiency of a covered product, DOE must amend theapplicable energy conservation standard accordingly. (42 U.S.C.6293(e))•DOE is only proposing to amendment to appendix D to clarify thetesting conditions.– The proposed amendments would not alter the measured efficiencyaccording to appendix D.– Would not affect a manufacturer’s ability to demonstratecompliance with the current energy conservation standards (1054 | Test Procedure for Clothes Dryerseere.energy.govCFR 430.32(h)(2)).Effects of Proposed Amendments•January 1, 2015 standards are based on CEF as measuredEffects of Proposed Amendments on Energy ConservationStandardsJanuary1,2015standardsarebasedonCEFasmeasuredaccording to the test procedure in appendix D1.•DOE investigated how the proposed amendments for automaticcycle termination would affect the measured CEF.– DOE conducted testing on 20 clothes dryers according to theproposed test method.–Results showedthat specific models resulted in either a higher orResultsshowedthatspecificmodelsresultedineitherahigherorlower measured CEF as compared to the current test procedure,ranging from a 27.4 percent decrease to a 20.4 percent increase inCEF with an average of a 3.8 percent increase.•DOE concludes that the proposed active mode amendments willon average not impact the measured efficiency as compared tothe current test procedure for models currently available on the55 | Test Procedure for Clothes Dryerseere.energy.govmarket.Effects of Proposed Amendments•DOE conducted testing to determine how the proposedEffects of Proposed Amendments on Energy ConservationStandardsDOEconductedtestingtodeterminehowtheproposedamendments to appendix D1 for standby mode and off modewould affect the measured CEF.Average Standby Power (W)Test UnitAverageStandbyPower(W)Existing Appendix D1 Proposed Appendix D110.97 0.9730.16 0.16140.38 0.38160.70 0.70•DOE believes that the proposed standby and off mode testprocedure amendments would not alter the measured CEF.•DOE is not considering amendments to the January 1, 2015ti t d d56 | Test Procedure for Clothes Dryerseere.energy.govenergy conservation standards.Effects of Proposed AmendmentsRequest for Comment on Effects of Proposed Amendments onEnergy Conservation StandardsItem 8DOE welcomes comments and additional data on the effects ofthe proposed test procedure amendments on the current energyconservation standards in both 10 CFR 430 32(h)(2) and (3) Inconservationstandardsinboth10CFR430.32(h)(2)and(3).Inparticular, DOE seeks comment on the proposed determination to notamend the energy conservation standards based on the proposed testprocedure amendments for automatic cycleterminationDOE alsoprocedureamendmentsforautomaticcycletermination.DOEalsowelcomes comment on the determination and testing results showingthat the proposed standby mode and off mode test procedureamendments would not measurablyaffect the measured efficiencyasycompared to the existing DOE test procedure in 10 CFR 430, subpartB, appendix D1.57 | Test Procedure for Clothes Dryerseere.energy.govCTest Procedure Overview and Issues1. Productsovered by the Proposed Amendments2. Automatic Cycle Termination3. Incorporation by Reference of IEC Standard 62301 (SecondEdition) for Measuring Standby Mode and Off Mode PowerConsumption4. Technical Correction to Per-Cycle Combined Total EnergyConsumption Calculation5. Clarifications to Test Conditions6. Effects of Proposed Test Procedure Revisions on Compliance withStandards7. Compliance with Other EPCA Requirements58 | Test Procedure for Clothes Dryerseere.energy.govOther EPCA Requirements•Automatic Cycle Termination:Test Burden – Active ModeAutomaticCycleTermination:– Proposed test method would require the measurement of the fullprogrammed automatic termination cycle, including cool-down.–Less burdensome than current test procedurewhich requiresLessburdensomethancurrenttestprocedure,whichrequirestester to monitor or make estimates about the RMC of the load todetermine when to stop the test to achieve the desired final RMC.•TimedDry:– Proposed test method would use same basic test method currentlyin appendix D1, except the test cycle would be stopped at 1.0 – 2.5percent rather then 2.5–5.0 percent.percentratherthen2.55.0percent.– Slightly longer cycle time, but the additional time would be minimalcompared to the overall time to set up and conduct the test.•For these reasons DOE believes that the proposed active mode59 | Test Procedure for Clothes Dryerseere.energy.govForthesereasons,DOEbelievesthattheproposedactivemodeamendments would not be unduly burdensome to conduct.Other EPCA Requirements•Standby mode and off mode proposed provisions from IECTest Burden – Standby and Off ModeStandbymodeandoffmodeproposedprovisionsfromIECStandard 62301 (Second Edition)– Provide a means to measure power consumption with greateraccuracyand repeatabilitythan the First Edition.p y– Interested parties commented that the test methods would not beunduly burdensome to conduct.–The potential for increased test burden for certain powerThepotentialforincreasedtestburdenforcertainpowerconsumption measurements is offset by more reasonablerequirements for testing equipment.•DOE tentatively concludes that the proposed testproceduresDOEtentativelyconcludesthattheproposedtestprocedureswould not be unduly burdensome to conduct.60 | Test Procedure for Clothes Dryerseere.energy.govOther EPCA RequirementsRequest for Comment on Test BurdenItem 9DOE seeks comment on any added test burden associated withtheproposed amendments. DOE requests that commentersprovidep q pspecific details and quantify any burdens.61 | Test Procedure for Clothes Dryerseere.energy.govOther EPCA Requirements•The certification requirements for residential clothes dryersCertification RequirementsThecertificationrequirementsforresidentialclothesdryersconsist of a sampling plan for selection of units for testing andrequirements for certification reports.•DOEproposes to amend theprovisions in the samplingplan in 10p p p gpCFR 429.21(a)(2) to include CEF.•DOE proposes to amend the reporting requirements in 10 CFR429.21(b2).)(– Require manufacturers, when using appendix D or D1, to providean indication if the dryer has automatic termination controls andalso to report the hourly Btu rating of the burner for gas dryers.– Require manufacturers, when using appendix D1, to list the cyclesetting selections for the energy test cycle for each basic model.62 | Test Procedure for Clothes Dryerseere.energy.govOther EPCA Requirements•DOEissued guidance that manufacturers may voluntarily useCompliance Dateissuedguidancethatmanufacturersmayvoluntarilyusenewly amended test procedures torate and certify their productsprior to the compliance date requiring the use of that amendedtest procedure.•Effective 180 days after the promulgation of any final amendmentsto the test procedure based on this proposal:–Manufacturers must make representations of energyefficiency,gy y,including certifications of compliance, using either appendix D orappendix D1.– Manufacturers must use a single appendix for all representations,including certifications of compliance, and may not use appendix Dfor certain representations and appendix D1 for others.•Compliance with DOE’s amended standards for clothes dryers,63 | Test Procedure for Clothes Dryerseere.energy.govand corresponding use of the test procedures at Appendix D1 forall representations is required as of January 1, 2015.ClosingIn all correspondence, please refer to theClothes DryerTest ProcedureHow to Submit Written CommentsInallcorrespondence,pleaserefertotheClothesDryerTestProcedurerulemaking by:– Test Procedure NOPR for Residential Clothes Dryers– Docket Number EERE-2011-BT-TP-0054– Regulatory Identification Number (RIN) 1904-AC63Email:RCDAT-2011-TP-0054@ee.doe.govPostal Mail:Ms. Brenda Jones, U.S. Department of EnergyBuilding Technologies Program Mailstop EE-2JBuildingTechnologiesProgram,MailstopEE1000 Independence Avenue, SWWashington, DC 20585-0121Courier:Ms. Brenda Jones, U.S. Department of EnergyBuilding Technologies Program950 L’Enfant Plaza, SW., Suite 600Washington, DC, 20024.Telephone: (202) 586-294564 | Test Procedure for Clothes Dryerseere.energy.govComment period closes March 18, 2013.