1 | Energy Efficiency and Renewable Energy 

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[INSERT PICTURE(S) OF PRODUCT(S)]

Notice of Public Meeting:

Residential Clothes DryersTest Procedures

November 13, 2014

Bryan Berrin

Department of Building Techno

EERE‐2014‐BT‐T

ResClothesDrye@ee.doe.gov
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Welcome• Introductions (around the room)

• Role of the Facilitator• Ground Rules

– Speak one at a time.

– Say your name for the record – there will be a complete tra

this meeting.

– Be concise – share the ‘air‐time’.

– Keep the focus here – cell phones on silent; limit sidebar

conversations.

– Webinar participants turn phone on mute; “raise your hand

recognized to speak.

• Housekeeping Items• Agenda Review• Opening Remarks
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Agenda

9:00 – 9:05 am Welcome, Introductions, Agenda R

9:05 – 9:15 am Opening Remarks

9:15 – 9:30 am Regulatory History and Backgroun

9:30 – 11:45 am Potential Test Procedure Changes 

Discussion

11:45 – 12:00 pm Closing Remarks
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Public Meeting Slides Topics

1 Introductions2 Stakeholder Opening Statements3 Regulatory History and Background4 Round-Table Discussion: Test Procedure Changes5 Closing Remarks
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Listening Via the Webcast• The Department is broadcasting this meeting live ov

Internet.

• DOE is providing the webcast to accommodate stake

that are unable to attend the public meeting in perso

• The web broadcast allows stakeholders to listen in an

the slides.

• All stakeholders are encouraged to submit written co

after the public meeting.
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Purpose of the Public Meeting• Invite discussion the potential changes DOE should c

making to the current test procedures for clothes dry

• Discuss next steps in the rulemaking.

• Invite participants to provide summary comments or

statements and raise additional issues for discussion.

• The deadline for submitting comments is December 

2014, 11:59 PM ET.
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Public Meeting Slides Topics

1 Introductions2 Stakeholder Opening Statements3 Regulatory History and Background4 Round-Table Discussion: Test Procedure Changes5 Closing Remarks
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Opening Remarks

Meeting participants are invited to provide opening rem

statements at this time.
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Public Meeting Slides Topics

1 Introductions2 Stakeholder Opening Statements3 Regulatory History and Background4 Round-Table Discussion: Test Procedure Changes5

Closing Remarks

Closing Remarks
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Regulatory History: Dryers Test Procedures

• DOE’s test procedures for clothes dryers are codified 

appendix D, appendix D1 and appendix D2 to subpart Title 10 of the Code of Federal Regulations.

Test Procedure Final Rules

Citation Date Description76 FR 972 01/06/2011 Created Appendix D1 for:

• measuring standby mode and off mode

• defining a new energy efficiency metric—co

energy factor (CEF)

• reflecting changes to consumer usage habit

revised initial moisture content, # of cycles load size)

78 FR 49608 08/14/2013 • Amended Appendix D1 to update the refere

latest edition of the International Electrotec

Commission (IEC) Standard 62301

• Amended D and D1 to clarify certain test co

• Created Appendix D2 to measure the effect

automatic cycle termination
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Background: Current Test Procedure Provisions ‐ S

Test Provisions Appendix D1 Appendix D2

Standby/Off Mode TestMethods

Incorporates by

reference IEC Standard

62301 (Second Edition)

with additional

clarifications

Incorporates by reference 

Standard 62301 (Secon

Edition) with additiona

clarifications

Ventless Dryer Test Methods Yes Yes

Number of Cycles Per Year 283 283Referenced AHAM Standard HLD‐1‐2009 HLD‐1‐2009

Test Load Weight

Standard Size Dryers:

8.45 ± .085 pounds

Compact Size Dryers:

3.00 ± .03 pounds

Standard Size Dryers: 8.4

.085 pounds

Compact Size Dryers: 3.0

.03 pounds

Detergent Specifications forTest Cloth Preconditioning

AHAM Standard Test

Detergent Formula 3

AHAM Standard Test

Detergent Formula 3

Water Temperature for Test

Load Preparation 60 °F ± 5 °F 60 °F ± 5 °F

Starting RMC of Test Load 57.5 ± 3.5 percent 57.5 ± 0.33 percent
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Test Provisions Appendix D1 Appendix D2

Cycle and Settings

Used for Test

Timed Dry Cycle,

Maximum

Temperature

Automatic Termination Control Drye

“Normal” Automatic Dry Cycle;

Maximum Temperature (if separate

selectable); “Normal” or “Medium

Dryness (or, if no such designations

mid‐point between min. and max

settings)

Timer Dryers: Timed Dry Cycle,

Maximum Temperature

RMC of Test Load

at Which Test is

Stopped

Stopped manually at

2.5–5 percent RMC

Automatic Termination Control Drye

Allowed to run until completion o

automatic cycle. Must be below 2

percent RMC or additional test wit

highest dryness level setting must 

run.

Timer Dryers: Stopped manually at 

2.5 percent RMC

Cool Down

Clothes dryer not

permitted to advance

into cool down

Cool down period included in

automatic cycle test

Background: Current Test Procedure Provisions ‐ S
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Test Provisions Appendix D1 Appe

Cool Down Clothes dryer not permitted

to advance into cool down

Cool down p

automat

Field Use Factor (multiplied by per‐cycle

energy consumption to account for over

drying)

= 1.04 for automatic

termination control dryers

= 1.18 for timer dryers

No field use fa

termination 

= 1.18 for 

Clarifications: Cycle settings used for the test cycle

 Requirements for the gas supply for gas

clothes dryers

 Installation conditions for console lights

 Method for measuring the drum

capacity

 Maximum allowable scale range

 Allowable use of a relative humidity

meter

Yes 

Background: Current Test Procedure Provisions ‐ S
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Background• Reason for further discussion:

o Interested parties have commented that the DOE clothes d

procedures may not produce results that are representativ

consumer use with regards to test load size and compositi

settings for the test cycle, and other provisions in the test 

o Manufacturers mentioned that test load types and test clo

different than those specified in the DOE test procedure d

results as repeatable as those obtained using the DOE test 

o DOE is interested in finding a solution that works for all pa

provides a test procedure that differentiates products on t

provides the consumer information about dryer usage as s

field, and is repeatable and reproducible.
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Background• Recent studies conducted by Oak Ridge National La

(ORNL) and Pacific Northwest National Laboratory (

o Characterized current clothes dryer performance using ap

D2 with different test loads.

o Evaluated current automatic cycle termination sensors and 

energy savings through improved sensors and control strat

o ORNL: investigated reduced airflow and recirculation of exha

achieve more homogeneous load in terms of final RMC and 

sensitivity of sensor response during the final stages of dryin

o PNNL: investigated humidity sensors to augment existing ter

algorithms.

• Report Links:

o ORNL: http://web.ornl.gov/sci/buildings/docs/2014‐10‐09‐ORNL‐DryerFinalReport‐o PNNL Vol.1: http://www.pnnl.gov/main/publications/external/technical_reports/PNo PNNL Vol. 2: http://www.pnnl.gov/main/publications/external/technical_reports/P
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Public Meeting Slides Topics

1 Introductions2 Stakeholder Opening Statements3 Regulatory History and Background4 Round-Table Discussion: Test Procedure Changes

5 Closing Remarks
17

Round‐Table Discussion• Round‐table discussion and idea generation regardi

to provisions in DOE test procedure.

o DOE has outlined key test procedure provisions for which in

parties have raised concern in the past.

o Interested parties are welcome to openly discuss these and 

potential changes to provisions in the DOE test procedure.

o For each comment regarding suggested changes to the test 

commenters are encouraged to present supporting data an

this will affect test burden, test‐to‐test repeatability, lab‐to

reproducibility, and how these suggested changes would si

dryer usage in the field.
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Test Load: Composition• Current DOE Test Provisions:

o Both Appendix D1 and D2 specify a test load composed of 

test cloths that are each 24 inches by 36 inches in dimensio

blend of 50‐percent cotton and 50‐percent polyester

• What alternative options should DOE consider for c

and construction of the test load?

o AHAM 1992 – Cotton towel, t‐shirt, shorts, tablecloth, pillo

sheet

o AHAM 2009 – Long staple pure cotton bed sheets, pillowca

o Others?

Image source: NEEA SEDI TWD, Dec, 16. 2012
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Test Load: Alternative Fabric

• Should DOE consider any alternative materials (e.g., 

for the test load?

o Any alternative synthetic fabrics that have similar moisture 

properties of cotton that may reduce variability in performa

o Rayon: semi‐synthetic fabric made from regenerated cellulo

similar characteristics to cotton.

• There are three types of rayon: viscose, modal, lyocell.

Characteristics Cotton Modal

Hygroscopy (waterabsorption)

High Higher than cotton

Thermal Capacity

(TemperatureRegulation)

Average Average

Durability Medium MediumAbility to Wrinkle Medium MediumBreathability High High
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Test Cycle Settings: Program, Temperature and Drynes• Appendix D2 Test Cycle Settings:

o Automatic termination control dryers:

o “Normal” cycle program. For dryers that do not have a “normal” prog

recommended by the manufacturer for drying cotton or linen clothe

o Maximum drying temperature setting when separately selectable.

o “Normal” or “medium” dryness level setting when separately selecta

designation is not provided, then the dryness level shall be set at the 

between the minimum and maximum settings.

o Any other optional cycle settings that do not affect the program, tem

dryness settings shall be tested in the as‐shipped position.

o Timer dryers:

o Maximum temperature setting and, if equipped with a timer, at the m

setting.

o Any other optional cycle settings that do not affect the temperature 

shall be tested in the as‐shipped position.

o If the clothes dryer does not have a separate temperature setting sel

control panel, the maximum time setting should be used for the dryi
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Test Cycle Settings: Program, Temperature and Drynes

• What combinations of cycle programs, temperature 

dryness settings, and other optional cycle settings s

consider for the test cycle?

o Cycle Programs: Normal, Heavy, Delicates

o Temperature Settings: Low, Medium, High

o Dryness Settings: Less Dry, Normal Dry, More Dry

o Other Optional Cycle Settings (e.g., Eco Mode)

Northwest Energy Efficiency Alliance (NEEA) field study conducted in the Pacific Northwest in Winter 2012.

• Temperature Settings • Dryness Level Sett
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Other Test Procedure Issues• DOE welcomes comments on other test procedure p

that it should consider changing (current DOE test pr

requirements included in parentheses):

– Initial RMC (57.5 percent)

– Consumer‐accepted final RMC (2.0 percent)

– Test load weight (8.45 pounds for standard‐size dryers; 3.00 

compact‐size dryers)

– Cycles per year (283 cycles)

– Other test provision(s)?
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Public Meeting Slides Topics

1 Introductions2 Stakeholder Opening Statements3 Regulatory History and Background4 Round-Table Discussion: Test Procedure Changes5 Closing Remarks
24

How to Submit Comments...• Public Meeting – oral comments will be captured in the transcr

become part of the public record.

• Written comments – comment period open until December 15

Reference docket #: EERE–2014–BT–TP–0034

Email: ResClothesDryer2014TP0034@ee.doe.govMail: Mrs. Brenda Edwards

U.S. Department of Energy

Building Technologies Program

1000 Independence Avenue SW., Mailstop EE‐2J

Washington, DC 20585‐0121

Courier: Mrs. Brenda Edwards

U.S. Department of Energy

Building Technologies Program950 L'Enfant Plaza, Suite 600Washington, DC 20024Telephone: (202) 586‐2945
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Backup Slides
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DOE Testing: Repeatability and Reproducibility

• Recent testing evaluated the repeatability and reproducibility 

test loads and conditions for measuring the effects of automat

termination:

o Testing conducted by DOE on a sample of 20 clothes dryer

encompassing all product classes as part of the most recen

procedure rulemaking.

o Testing conducted by Oak Ridge National Laboratory (ORN

Pacific Northwest National Laboratory (PNNL) on samples 

vented dryers.

• Test loads evaluated:

o DOE – 50/50 cotton/polyester cloth

o AHAM 1992 – Cotton towel, t‐shirt, shorts, tablecloth, pillo

bed sheet

o AHAM 2009 – Long staple pure cotton bed sheets, pillowca

towels.
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DOE Test Procedure Rulemaking Testing: Appendices D

Product Class Test Unit

CEF Test‐to‐Test Variation Standard Deviatio

DOE Test Load

(Appendix D1)

IEC/AHAM Test

Load

(Appendix D1)

Automatic Cycle

Termination‐DOE

Test Load

(Appendix D2)

Vented Electric

Standard

1 1.35 1.42 0.5 2 0.57 ‐‐ 2.95 3 0.89 1.21 1.46 4 0.37 ‐‐ 1.14 5 1.02 ‐‐ 2.10 6 0.46 1.28 0.72 7 0.70 ‐‐ 2.20 8 1.12 0.96 0.16 

Avg 0.81 1.22 1.40 

Vented Electric

Compact (240V)

9 1.60 0.90 4.25 

10 0.18 1.28 5.70 

Avg 1.10 1.09 4.98 

Vented Electric

Compact (120V) 11 0.51 0.31 2.12 
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DOE Test Procedure Rulemaking Testing: Appendices D

Product Class Test Unit

CEF Test‐to‐Test Variation Standard Deviatio

DOE Test Load

(Appendix D1)

IEC/AHAM Test

Load

(Appendix D1)

Automatic Cycle

Termination‐

DOE Test Load

(Appendix D2)

Vented Gas

12 1.31 ‐‐ 0.48 

13 0.82 1.17 0.81 14 2.08 1.10 1.58 15 1.23 ‐‐ 2.08 

16 0.61 ‐‐ 0.68 

17 0.52 0.55 2.73 

Avg 1.10 0.94 1.39 

Vented Electric

Compact (240V) 18 0.32 ‐‐ 2.00 

Vented Electric

Combination

Washer/Dryer

19 0.75 ‐‐ 0.55 

20 0.90 ‐‐ 3.22 

Avg 0.82 ‐‐ 1.88 

Total Average 0.87 1.02 1.87 
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DOE Test Results for Lab‐to‐Lab Reproducibility

Product Class Test Unit

Automatic Cycle Termination, DOE Test

Load‐Average CEF

Automatic Cycle Ter

2009 Test Load‐

DOE Lab Independent Lab % Difference DOE Lab Indepe

La

Vented ElectricStandard

1 3.10 3.16 2.2% 2.85 3.12 2.73 3.02 10.8% 2.76 2.7

Vented ElectricCompact (240V) 10 2.26 2.27 0.3% 2.12 2.1Vented Gas

13 2.86 2.87 0.4% 2.87 2.615 2.72 2.69 1.0% 2.73 2.616 3.29 3.25 1.2% 3.23 2.917 3.03 2.94 2.8% 3.03 2.8

Vented Electric

Compact (240V) 18 2.90 2.73 6.0% 2.74 2.6Vented ElectricCombinationWasher/Dryer

20 2.19 2.23 2.0% Not Tested Not Te

Average 3.0% 
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ORNL: Effects of Load Type• Using Appendix D2, ORNL conducted tests to show the effects of test load on E

moisture content (RMC), and duration for each dryer model.

EC – ES – GS -
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ORNL Key Results: Test‐to‐Test Variation
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PNNL: Load Tests• PNNL performed a number of tests on 4 units to analyze EF, RM

time.

• Replicate tests were performed on Test Unit 1 below.

Test Test Load Temp Setting # of Tests Drying time (minutes) Final RMC (%) 

Avg SD % SD Avg SD % SD Avg 

D2 DOE High 3 39.7 0.43 1% 0.58 0.09 16% 3.2D2 DOE Medium 1 37.6 0.50 3.4D2 A2009 High 3 40.2 1.28 3% 0.74 0.05 6% 3.0

D2 A2009 medium 1 38.9 0.92 3.1D2 A1992 High 3 36.6 2.02 6% 1.53 0.87 57% 3.2

D2 A1992 medium 1 36.0 2.38 3.3D1 DOE High 3 23.0 0.25 1% 3.76 1.02 27% 3.9
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PPNL: Summary of test results for the other 3 

Dryer Test Test Load Temp Setting Drying Time (mins) RMC (%) 

Test Unit 2

D2 DOE high 37.34 0.47 D2 DOE medium 34.25 0.47 D2 AHAM 2009 high 35.91 0.86 D2 AHAM 2009 medium 35.52 2.25 D2 AHAM 1992 high 36.85 1.66 D2 AHAM 1992 medium 35.52 4.85 D1 DOE high 23.10 4.41 

Test Unit 3

D2 DOE turbo 33.20 0.62 D2 DOE full load 36.80 0.59 D2 AHAM 2009 turbo 35.97 1.98 D2 AHAM 2009 full load 35.63 3.10 

D2 AHAM 1992 turbo 33.22 4.94 D2 AHAM 1992 full load1 45.08 1.26 

D1 DOE turbo 29.45 3.38 

Test Unit 4

D2 DOE high 38.77 0.58 D2 DOE medium 35.45 0.78 D2 AHAM 2009 high 37.67 0.73 D2 AHAM 2009 medium 36.25 1.31 D2 AHAM 1992 high 41.27 0.81 D2 AHAM 1992 medium 33.03 2.79 D1 DOE high 21.93 2.59