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# Test Procedure Issue
Clothes Washer Workshop('!' 

# Clothes Washer Workshop 

# Test Procedure Issue

• Background
• Modified Energy Factor (MEF) takes into account dryer energy which is reflected in Remaining Moisture Content (RMC).
• Recently we discovered variations in RMC measurements which effects the MEF.

# Clothes Washer Test Procedure Issue Background (cont'd)
• DOE, NIST, AHAM, LBNL, ADL, Intertek Testing Services, Textile Innovators Inc. and manufacturers have been working together to identify the causes.
• Initial steps: Examined potential causes of RMC variations

- • Reviewed RMC test methodology at ITS (Intertek Testing Services), and •Used two different test cloths samples.

# Clothes V/ asher Test Procedure Issue Background (cont'd)
• Initial results: The two different test cloth samples resulted in different RMC values.
• We began to investigate the characteristics of the two cloth samples (from different suppliers).
• Both samples were reasonably close to specification. •We felt that further investigation was necessary.

# Clothes \ 1 / 

# asher Test Procedure Issue Background (cont'd) •Next steps: Resolve the test procedure issue quickly. •Created Task Force to develop action plan coordinated by ADL.

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### Testing recently conducted at ITS using two different cloth test loads resulted in different RMC values for a given washer:**:~',' ~--·** **~** •··· t

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RT/db/2995217/99 IssuesClothes Washer Test Procedure Appendix J1 Implications 

### Differences in RMC can have an effect on Modified Energy Factor (MEF).
For example: 

## + For a high efficiency horizontal axis washer, ·an 18% increase in RMC**(54.5°/o~64.5o/o)** results in a 13% decrease in MEF**(1.52~1.33)** 

## + For a lower efficiency vertical axis washer, a 17% increase in RMC**(57.7%~67.7%)** results in a 6o/o decrease in MEF**(.82~.77)**

RT/db/2995217/99 2Clothes Washer Test Procedure Appendix J1 Implications 

### Manufacturer and AHAM supplied data on costs required to achieve increasing levels of efficiency could be inconsistent based on the test cloth used in clothes washer testing.



## + However, past data on RMC collected by 

### most manufacturers has not indicated significant differences.

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RT/db/29952/7/99 3Clothes Washer Test Procedure Appendix J1 

### Action Plan:**<c·;:;<:>;~.,** _,;.,.·

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## + Testing for compliance to specifications 

## + Materials properties and performance testing 

## + RMC Testing • Additional washer testing per test procedure Appendix 

### J1 (ITS) • Extractor testing over a wide range of variables (AOL)

RT/db/29952/7/99 4Clothes Washer Test Procedure 

### Lab/Test Matrix:

"Amana" Load (Tl) "ITS" Load

(Cotton Goods) "New" Textile

Innovators "New" Cotton Goods

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. Tests: ABC D Completed Tests: ABC D Completed AOL to obtain material and send for evaluation Tests: ABC D AOL to obtain material and send for evaluation Tests: ABC D

A: Blend B: Weight C: Thread Count D: Yarn Type Appendix J1

ITS has requested tests A B C D -+-----• ITS has requested tests A B C D ---------1=> (see note below)

E: Twist F: Yarn Number G: Water Retention (Centrifuge) H: Water Retention (Absorbency) Note: Luther Myer (Tl) has recently sent and received information on blend for a Tl sample. USDA has received samples to test EFG H USDA has received samples to test EFG H AOL to obtain material and send for evaluation Tests: EFG H AOL to obtain material and send for evaluation Tests: EFG H

RT/db/29952/7/99 5Clothes Washer Test Procedure Appendix J1 

### Testing is planned at Arthur D. little to determine RMC of various test cloths across a range of conditions.

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RT/db/29952/7/99 6Clothes Washer Test Procedure Appendix J1 

### Action Plan (cont'd):

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RT/db/29952/7/99 7Clothes Washer Test Procedure Appendix J1 

### Schedule:

RT/db/29952/7/99 8