Clothes Washer -- Standard

Proposed AHAM Test Procedure with RMC Added (i)

392 cycles/yr Markup 1.7

Design Design Option Increm. Total Retail Energy Use -- Propo:ed Test Procedure Hv Total MEF Water Use

Level (4)(5)(6)(8)(11) perunit Mfg. Cost Hot (135 F Machine Total Clothes Energy Factor ref.=62% Energy cu. ft. per PerCycle (13)

mfg. costs Cost (2) Water Energy Energy Container cu. ft. per RMC with MEF kWh/cycle Total Gallons per

$ (12) $ (12) $ (12) kWh/cycle kWh/cycle kWh/cycle cu. ft. kWh/cycle (7) kWh/cycle (7) Gallons cu. ft. cap.

0 Baseline (vert. axis) $225 $383 1.57 0.22 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3

1 0+RMC= 50% $10 $235 $399 1.57 0.23 1.80 2.93 1.63 1.22 3.02 0.969 38.9 13.3

2 0+RMC= 40% $9 $243 $414 1.57 0.23 1.81 2.93 1.62 0.96 2.76 1.059 38.9 13.3

3 2 +Thennosatic Mixing Valve $8 $252 $428 1.43 0.23 1.66 2.93 1.76 0.96 2.62 1.119 38.9 13.3

4 3+1mproved Fill Control $17 $268 $456 1.28 0.23 1.52 2.93 1.93 0.96 2.47 1.184 36.1 12.3

5 4+RMC= 35% $22 $290 $494 1.28 0.24 1.53 2.93 1.92 0.82 2.35 1.246 36.1 12.3

6 4+RMC= 30% $4 $295 $501 1.28 0.27 1.56 2.93 1.88 0.69 2.25 1.303 36.1 12.3

0 Baseline (vert. axis) $225 $383 1.57 0.22 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3

7 Horizontal Axis Design $101 $327 $555 0.46 0.25 0.71 2.77 3.89 1.54 2.25 1.228 26.1 9.4

8 Horz. Axis w/recirculation $3 $330 $561 0.37 0.26 0.63 2.74 4.32 1.54 2.17 1.259 21.8 8.0

9 8+RMC= 50% $10 $339 $577 0.37 0.27 0.64 2.74 4.28 1.22 1.86 1.471 21.8 8.0

10 8+RMC= 40% $9 $348 $592 0.37 0.27 0.65 2.74 4.23 0.96 1.60 1.707 21.8 8.0

II 8+RMC=35% $22 $370 $629 0.37 0.28 0.66 2.74 4.17 0.82 1.48 1.849 21.8 8.0

12 8+RMC= 30% $4 $374 $636 0.37 0.31 0.69 2.74 3.98 0.69 1.38 1.987 21.8 8.0

13 13+henrmostaic Mixing valve $8 $382 $650 0.34 0.31 0.65 2.74 4.20 0.69 1.34 2.039 21.8 8.0

0 Baseline (vert. axis) $225 $383 1.57 0.22 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3

14 0+Tighter tub tolerance $7 $232 $395 1.48 0.22 1.70 2.93 1.72 1.54 3.24 0.903 36.0 12.3

15 14 t+hennostali Mixing Valve $8 $241 $409 1.34 0.22 1.56 2.93 1.87 1.54 3.10 0.944 36.0 12.3

16 15+lmproved Fill Control $17 $257 $438 1.21 0.22 1.43 2.93 2.05 1.54 2.97 0.987 34.2 11.7

17 Auto-Fill Control (10)

18 Adaptive Control (10)

19 0+Added Insulation $49 $274 $466 1.57 0.22 1.79 2.94 1.64 1.54 3.33 0.882 38.9 13.2

20 O+Increase Motor Efficiency $10 $235 $399 1.57 0.20 1.77 2.93 1.65 1.54 3.31 0.883 38.9 13.3

21 0+Suds Saving (9) $28 $253 $430 1.63 0.22 1.85 2.91 1.57 1.54 3.39 0.859 35.6 12.2

22 0+Direct Drive Motor $71 $296 $503 1.57 0.09 1.66 2.94 1.77 1.54 3.20 0.919 38.9 13.2

Footnotes listed on separate page

7/9/95 . c:\clean3\clthwashV,.pdsht\AHAM 15B2

 EE-RM-94-403 COMMENT 40

Clothes Washer -- Standard 

,-: -

Proposed AHAM Test Procedure with RMC Added (I) 

392 cycles/yr Markup 1.7 

Design Design Option Increm. Total Retail Energy Use -- Propo:;ed Test Procedure Hv Total MEF Water Use 

Level (4)(5)(6)(8)(11) per unit Mfg. Cost Hot (135 FJ Machine Total Clothes Energy Factor ref.=62% Energy cu. ft. per Per Cycle (13) 

mfg. costs Cost (2) Water Energy Energy Container cu. ft. per RMC withMEF kWh/cycle Total Gallons per 

$ (12) $ (12) $ (12) kWh/cycle kWh/cycle i kWh/cycle cu. ft. kWh/cycle (7) kWh/cycle (7) Gallons cu. ft. cap. 

0 Baseline (ven. axis) $225 $383 1.57 0.22 I 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3 

I O+RMC =50% $10 $235 $399 1.57 0.23 1.80 2.93 1.63 1.22 3.02 0.969 38.9 13.3 

2 0+RMC=40% $9 $243 $414 1.57 0.23 1.81 2.93 1.62 0.96 2.76 1.059 38.9 13.3 

3 2 ... Thermostatic MUting Valve $8 $252 $428 1.43 0.23 1.66 2.93 1.76 0.96 2.62 1.119 38.9 13.3 

4 3+lmproved Fill Control $17 $268 $456 1.28 0.23 1.52 2.93 1.93 0.96 2.47 1.184 36.1 12.3 

5 4+RMC = 35% $22 $290 $494 1.28 0.24 1.53 2.93 1.92 0.82 2.35 1.246 36.1 12.3 

6 4+RMC= 30% $4 $295 $501 1.28 0.27 1.56 2.93 1.88 0.69 2.25 1.303 36.1 12.3 

-

0 Bac;eline (ven. axis) $225 $383 1.57 0.22 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3 

7 Horizontal Axis Design $101 $327 $555 0.46 0.25 0.71 2.77 3.89 1.54 2.25 1.228 26.1 9.4 

8 Horz. Axis wfrecirculalion $3 $330 $561 0.37 0.26 0.63 2.74 4.32 1.54 2.17 1.259 21.8 8.0 

9 8+RMC= 50% $10 $339 $577 0.37 0.27 0.64 2.74 4.28 1.22 1.86 1.471 21.8 8.0 

10 8+RMC = 40% $9 $348 $592 0.37 0.27 0.65 2.74 4.23 0.96 1.60 1.707 21.8 8.0 

II 8+RMC= 35% $22 $370 $629 0.37 0.28 0.66 2.74 4.17 0.82 1.48 1.849 21.8 8.0 

12 8+RMC= 30% $4 $374 $636 0.37 0.31 0.69 2.74 3.98 0.69 1.38 1.987 21.8 8.0 

13 13+ Thermostatic Mi~ing Valve $8 $382 $650 0.34 0.31 0.65 2.74 4.20 0.69 1.34 2.039 21.8 8.0 

0 Bac;eline (ven. axis) $225 $383 1.57 0.22 1.79 2.93 1.63 1.54 3.33 0.878 38.9 13.3 

14 0+ Tighter tull tolerance $7 $232 $395 1.48 0.22 1.70 2.93 1.72 1.54 3.24 0.903 36.0 12.3 

15 14+ Thcnnustalk: Mi .. ing Valve $8 $241 $409 1.34 0.22 1.56 2.93 1.87 1.54 3.10 0.944 36.0 12.3 

16 15+lmproved Fill Control $17 $257 $438 1.21 0.22 1.43 2.93 2.05 1.54 2.97 0.987 34.2 11.7 

17 Auto·FiII Control '( 10) 

18 Adaptive Control (10) 

19 O+Added Insulation $49 $274 $466 1.57 0.22 1.79 2.94 1.64 1.54 3.33 0.882 38.9 13.2 

20 O+lncrease Motor Efficiel)cy $10 $235 $399 1.57 0.20 1.77 2.93 1.65 1.54 3.31 0.883 38.9 13.3 

21 O'+Suds Saving (9) $28 $253 $430 1.63 0.22 1.85 2.91 1.57 1.54 3.39 0.859 35.6 12.2 

22 O+Direct Drive Motor $71 $296 $503 1.57 0.09 1.66 2.94 1.77 1.54 3.20 0.919 38.9 13.2 

Footnotes listed on separate page 

7/9/95 . c:\c1ean3\clthwash\),pdsht\AHAM 15B2 
Clothes Washer -- Standard

Proposed AHAM Test Procedure with RMC Addec.

Cummulative Payback Analysis

Electric Dryer Gas Dryer Combined Dryers

Design Design Option Electric W.H. Gas W.H. Combined Electric W.H Gas W.H. Combined Electric. Gas Combined

Level Payback Payback Elect.& Gas Payback Payback Elect.& Gas W.H. W.H. W.H.

Cumm. Cumm. Payback Cumm. Cumm. Payback Payback Payback Payback Payback

.__ ____ -__ years (3) years (3) years (3) years (3) years (3) years (3) years (3) years (3) years (3)

0 Baseline (vert. axis)

I 0+RMC= 50% 1.8 1.8 1.8 6.1 6.6.1 2.1 2.1 2.1

2 0+RMC= 40% 1.8 1.8 1.8 6.4 6.4 6.4 2.2 2.2 2.2

3 2 +hnnoslatic Mixing Valve 2.1 2.4 2.3 4.9 7.0 5.8 2.5 2.9 2.7

4 3+lmproved Fill Control 2.6 3.2 2.9 4.4 6.6 5.4 2.9 3.6 3.2

5 4+RMC= 35% 3.4 4.1 3.8 6.3 9.2 7.7 3.9 4.8 4.3

6 4+RMC = 30% 33 4.0 3.7 6.7 9.6 8.0 3.8 4.6 4.2

0 Baseline (vert. axis)

7 Horizontal Axis Design 3.7 6.7 4.9 3.7 6.7 4.9 3.7 6.7 4.9

8 Horz. Axis w/recirculation 3.3 5.7 4.3 3.3 5.7 4.3 3.3 5.7 4.3

9 8+RMC = 50% 3.1 4.8 3.9 3.5 5.8 4.4 3.2 5.0 4.0

10 H+RMC =40% . 3.3.6 4.4 5 4.3.1 4 3.8

1I 8+RMC = 35% 3.3 4.8 4.0 4.2 6.7 5.3 3.5 5.1 4.2

12 8+RMC= 30% 33 4.7 3.9 4.3 6.9 5.4 3.5 5.1 4.2

13 3+-Thennostaic Mixing Valve 3.4 4.9 4 4.4 2 4.44 5.6 3.6 5 

0 Baseline (vert. axis)

14 O+Tighter tub tolerance 2.0 2.9 2.4 2.0 2.9 2.4 2.0 2.9 2.4

15 14+Thcnnostatic Mixing Valve 2.6 4.5 3.4 2.6 4.5 3.4 2.6 45 3.4

16 15+lmproved Fill Control 3.4 5.9 4.4 3.4 5.9 4.4 3.4 5.9 4.4

17 Auto-Fill Control (10)

18 Adaptive Control (10)

19 0+Added Insulation NA NA NA

20 0+lncrease Motor Efficiency 27.3 27.3 27.3 27.3 27. 3 27.3 273 27.3 273 27.3 

21 0+SudsSaving (9) 23.7 15.8 18.5 23.7 15.8 18.5 23.7 15.8 18.5

22 0+Direct Drive Motor 30.4 4 30.4 4 4 4 30.4 30.4 30.4 304.4 30.4

7/9/95 c:\clean3\clthwash\spdsht\AHAM I 5B2 2

 EE-RM-94-403 COMMENT 40

7/9/95 

Clothes Washer·· Standard 

ProPQsed AHAM Test Procedure with RMC Adder~ 

Cummulative Payback Analysis 

Electric Dryer 

Design Design Option Electric W.H. GasW.H. Combined ~Iectric W.H 

Level' Payback Payback Elect.&Gas Payback 

Cumm. Cumm. Payback Cumm. 

years (3) years (3) years (3) years (3) 

0 Ba~line (ven. axis) 

I O+RMC = 50% 1.8 1.8 1.8 6.1 

2 0+RMC=40% 1.8 1.8 1.8 6.4 

3 2 + Thennoslatic Mixing VaI.e 1.1 2.4 2.3 4.9 

4 3+lmproved Fill Control 1.6 3.2 2.9 4.4 

5 4+RMC= 35% 3.4 4.1 3.8 6.3 

6 4+RMC=30% 3.3 4.0 3.7 6.7 

0 Ba~line (vert. axis) 

7 Horiwnlal Axis Design 3.7 6.7 4.9 3.7 

S Horz. Axis w/recircul:ition 3.3 5.7 4.3 3.3 

9 R+RMC = 50% 3.1 4.R 3.9 3.5 

III K+RMC =4()% 3.0 4.4 3.6 3.6 

II 8+RMC= 35% 3.3 4.S 4.0 4.2 

12 S+RMC= 30% 3.3 4.7 3.9 4.3 

13 I3+ThennOSlatic Mixing Valve 3.4 4.9 4.1 4.4 

0 Ba~line (ven. axis) 

14 0+ Tighter tub tolerance 1.0 2.9 2.4 2.0 

15 14+ ThennOSlatic Mi.ing Valve 1.6 4.5 3.4 2.6 

16 15+lmproved Fill Control 3.4 5.9 4.4 3.4 

17 Auto-Fill Control (10) 

IS Adaptive Control (10) 

19 O+Added Insulation NA NA NA 

20 O+lncrease Motor Efficiency 27.3 27.3 27.3 , 27.3 

21 O+Suds Saving (9) 23.7 15.S 18.5 23.7 

22 O+Direct [)rive Motor 30.4 30.4 30.4 30.4 

Gas Dryer 

GasW.H. 

Payback 

Cumm. 

years (3) 

6.1 

6.4 

7.0 

6.6 

9.2 

9.6 

6.7 

5.7 

5.S 

5.S 

6.7 

6.9 

7.2 

2.9 

4.5 

5.9 

27.3 

15.S 

30.4 

c:\c1ean3\c1thwash\spdsht\AHAM 15B2 

Combined Dryers 

Combined . Electric. Gas Combined 

Elect.&Ga~ W.H. W.H. W.H. 

Payback Payback Payback Payback 

years (3) years (3) years (3) years (3) 

6.1 2.1 2.1 2.1 

6.4 2.2 2.2 2.2 

5.8 2.5 2.9 2.7 

5.4 2.9 3.6 3.2 

7.7 3.9 4.S 4.3 

8.0 3.S 4.6 4.2 

4.9 3.7 6.7 4.9 

4.3 3,3 5.7 4.3 

4.4 3.2 5.0 4.0 

4.5 3.1 4.7 3.8 

5.3 3.5 5.1 4.2 

5.4 3.5 5.1 4.2 

5.6 3.6 5.3 4.4 

2.4 2.0 2.9 2.4 

3.4 2.6 4.5 3.4 

4.4 3.4 5.9 4.4 

17.3 27.3 27.3 27.3 

IS.5 23.7 15.8 IS.5 

30.4 30.4 30.4 30.4 

2 
Clothes Washer-- Standard

Proposed AHAM Test Procedure with RMC Added

Annual Operating Costs

Without Dryer Dryer only Elect. Dryer Gas Dryer Combined Dryers Design Design Option Hot Water Energy Machine Water Total Total Elect. Gas Combined Total Total lTotal Total

Level Electric Gas Energy Use Elect

ric Gas Combined Dryer Dryer Dryer Electric Gas Combined Electric Gas Combined Elect. Gas Combined $/y /y S yr yr W,H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H.

--------- ____ $/yr $/yr $/yr $/ $/yr yr S Syr /yr S/yr $/yr $/yr S/yr S$yr $/ yr S$yr 0 Baseline (vert. axis) $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 $142 $112 $126 $110 $81 $94 $134 $105 $118 -I O+RMC = 50% $47 $17 $7 $43 $97 $67 $80 $36 $11 $30 $133 $103 $116 $107 $78 $91 126 97 $110 2 0+RMC = 40% $47 $17 $7 $43 $97 $67 $81 $28 $9 $23 $125 $96 $109 $105 $76 $89 $120 $91 $104 3 2 +1ennomricj Mixing Valve $42 $15 $7 $43 $92 $66 $78 $28 $9 $23 $121 $94 $106 $101 $74- $86 $116 $89 $101 4 3+lmproved Fill Control $38 $14 $7 $40 $85 $61 $72 $28 $9 $23 $113 $89 $100 $94 $70 $80 $108 $84 $95 5 4+RMC= 35% $38 $14 $7 $40 $85 $61 $72 $24 $7 $20 $110 $86 $96 $93 $69 $79 $105 $81 $92 6 4+RMC = 30% $38 $14 $8 $40 $86 $62 $73 $20 $6 $17 $107 $83 $93 $92 $68 $79 $103 $79 $90

0 Baseline (vert. axis) $47 $17 $7 $43 $96 $67 $80 $46 -$14 $38 $142 $112 126 $110 $81 $94 134 $105 $118 7 Horizontal Axis Design $14 $5 $7 $29 $50 $41 $45 546 $14 $38 $96 $87 $91 $64 $55 $59 $88 $79 $83 8 Horz. Axisw/recirculation $11 $4 $8 · $24 $43 $36 $39 $46 $14 $38 $88 $82 $85 $57 $50 $53 $81 $74 $77 9 8+RMC= 50% $11 $4 $8 $24 $43 $36 $39 $36 $11 $30 $79 $72 $75 $54 $47 $50 $73 $66 $69 10 8+RMC = 40% $11 $4 $8 $24 $43 $36 $40 $28 $9 $23 $72 $65 $68 $52 $45 $48 $67 $60 $63 11 8+RMC= 35% $11 $4 $8 $24 $44 $37 $40 $24 $7 $20 $68 $61 $64 $51 $44 $47 $64 $57 $60 12 8+RMC = 30% $11 $4 $9 $24 $45 $38 $41 $20 $6 $17 $65 $58 $61 $51 $44 $47 $61 $54 $58 13 13+Thermosnt Mixing Valve $10 $4 $9 $24 $44 $37 $40 $20 $6 $17 $64 $58 $60 $50 $43 $46 $60 $54 $57

0 Baseline(vert. axis) - $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 $142 $112 $126 $110 $81 $94 $134 $105 $118 14 O+Tighter tub tolerance $44 $16 $7 $40 $90 $63 $75 $46 $14 $38 $136 $108 $121 $104 $76 $89 $128 $100 $113 15 14+Thrmostatic Mixing Valve $40 $15 $7 $40 $86 $61 $72 $46 $14 $38 $132 $107 $118 $100 $75 $86 $124 $99 $110 16 15+lmproved Fill Control $36 $13 $7 $38 $80 $58 $68 $4 14 38 6 $103 $113 $94 $71 $82 $118 $95 $105

17 Auto-Fill Control (10)

18 Adaptive Control (10)

19 0+Added Insulation $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 $142 $112 $126 $110 $81 $94 $134 $105 $118 20 +lncrease Motor Efficiency $47 $17 $6 $43 $96 $66 $80 $46 $14 $38 $141 $112 $125 $109 $80 $93 $133 $104 $117 21 O+Suds Saving (9) $48 $18 $7 $40 $94 $64 $78 $46 $14 $38 $140 $109 $123 $108 $78 $91 $132 $102 $115 22 0+Direct Drive-Motor $47 $17 $3 $43 $92 $63 $76 $46 $14 $38 $138 $108 $122 $106 $77 $90 $130 $101 $114

7/9/95 c:\clean3\clthwash\spdsht\AHAMI 5B2 3

t;lothes Washer -- Standard EE-RM-94-403 COMMENT 40

Proposed AHAM Test Procedure with RMC Added 

Annual Operating Costs 

Without Dryer Dryer only 

Design Design Option Hot Water Energy Machine Water Total Total Elect. Gas Combined 

Level Electric Gas Energy Use Electric Gas Combined Dryer Dryer Dryer 

$Iyr $Iyr $Iyr $Iyr W,H. W.H. W.H. 

$Iyr $Iyr $Iyr $Iyr $Iyr $Iyr 

0 Baseline (ven. axis) $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 

-../1 0+RMC=50% $47 $17 $7 $43 $97 $67 $80 $36 $11 $30 

2 O+RMC = 40% $47 $17 $7 $43 $97 $67 $81 $28 $9 $23 

J 2 +ThennU!;tabc Mhting Valve $42 $15 $7 $43 $92 $66 $78 $28 $9 $23 

4 3+lmproved Fill Control $38 $14 $7 $40 $85 $61 $72 $28 $9 $23 

5 4+RMC = 35% $38 $14 $7 $40 $85 $61 $72 $24 $7 $20 

6 4+RMC=30% $38 $14 $8 $40 $86 $62 $73 $20 $6 $17 

0 Baseline (ven. axis) $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 

7 Horizontal Axis Design $14 $5 $7 $29 $50 $41 $45 $46 $14 $38 

8 Hon. Axis .w/recirculation $11 $4 $8 $24 $43 $36 $39 $46 $14 $38 

9 8+RMC=50% $11 $4 $8 $24 $43 $36 $39 $36 $11 $30 

10 8+RMC = 40% $11 $4, $8 $24 $43 $36 $40 $28 $9 $23 

II 8+RMC=35% $11 $4 $8 $24 $44 $37 $40 $24 $7 $20 

12 8+RMC = 30% $11 $4 $9 $24 $4,5 $38 $41 $20 $6 $17 

13 I3+Thermostatic Mixing Valve $10 $4 $9 $24 $44 $37 $40 $20 $6 $17 

0 Baseline (ven. axis) $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 

14 0+ Tighter tub tolerance $44 $16 $7 $40 $90 $63 $75 $46 $14 $38 

15 I4-<Thermostatic Mixing Valve $40 $15 $7 $40 $86 $61 $72 $46 $14 $38 

16 15+lmproved Fill Control $36 $13 $7 $38 $80 $58 $68 $46 $14 $38 

17 Auto-Fill Control (10) 

18 Adaptive Control (10) 

19 O+Added Insulation $47 $17 $7 $43 $96 $67 $80 $46 $14 $38 

20 O+lncrea<;e MOIor Efficiency $47 $17 $6 $43 $96 $66 $80 $46 $14 $38 

21 O+Suds Saving (9) $48 $18 $7 $40 $94 $64 $78 $46 $14 $38 

22 O+Direct Drive Motor $47 $17 $3 $43 $92 $63 $76 $46 $14 $38 

7/9/95 c:\c1ean3\c1thwash\spdsht\AHAM 15B2 

.. . 

Elect. Dryer Gas Dryer Combined Dryers 

Total Total Total Total -

E1~tric Gas Combined Electric Gas Combined Elect. Gas Combined 

W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. W.H. 

$Iyr $Iyr $Iyr $Iyr $Iyr $Iyr $Iyr $Iyr $Iyr 

$142 $112 $126 $110 $81 $94 $134 $105 $118 

$\33 $103 $116 $107 $78 $91 $126 $97 $110 

$125 $96 $109 $105 $76 $89 $120 $91 $104 

$121 $94 $106 $101 $74· $86 $116 $89 $101 

$113 $89 $100 $94 $70 $80 $108 $84 $95 

$110 $86 $96 $93 $69 $79 $105 $81 $92 

$107 $83 $93 $92 $68 $79 $103 $79 $90 

$142 $112 $126 $110 $81 $94 $134 $105 $118 

$96 $87 $91 $64 $55 $59 $88 $79 $83 

$88 $82 $85 $57 $50 $53 $81 $74 . $77 

$79 $72 $75 $54 $47 $50 $73 $66 $69 

$72 $65 $68 $52 $45 $48 $67 $60 $63 

$68 $61 $64 $51 $44 $47 $64 $57 $60 

$65 $58 $61 $51 $44 $47 $61 $54 $58 

$64 $58 $60 $50 $43 $46 $60 $54 $57 

$142 $112 $126 $110 $81 $94 $\34 $105 $118 

$136 $108 $121 $104 $76 $89 $128 $100 $113 

$132 $107 $118 $100 $75 $86 $124 $99 $110 

$126 $103 $113 $94 $71 $82 $118 $95 $105 

$142 $112 $126 $110 $81 • $94 $134 $105 $118 

$141 $112 $125 $109 $80 $93 $133 $104 $117 

$140 $109 $123 $108 $78 $91 $132 $102 $115 

$\38 $108 $122 $106 $77 $90 $130 $101 $114 
Clothes Washer -- Standard

Proposed AHAM Test Procedure with RMC Added

Life-Cycle Cost

Design Design Option Life Cycle Cost --RMC /MEF (Electric Dryer) (14) Life Cycle Cost-RMC/MEF(GasDryer) (14) Life Cycle Cost -- Combined

Level Electric Water Heater Gas Water Heater Electric Water Heater Gas Water Heater Water Heaters :45 % Elect.; 55% Gas

Discount Rate Discount Rate Discount Rate Discount Rate Dryers: 75.1% Elect.; 24.9% Gas

2% 6% 15% 2% 6% 15% 2% 6% 15% 2% 6% 15% 2% 6% 15%

0 Baseline (vert. axis) $2.112 $1,708 $1,197 $1,753 $1,433 $1.028 $1,724 $1,411 $1.015 $1.365 $1.136 $846 $1,818 $1,483 $1,059

I 0+RMC= 50% $2,015 $1,638 $1,160 $1,657 $1,363 $992 $1,708 $1,402 $1,016 $1,349 $1,128 $847 $1,741 $1,428 $1,032

2 0+RMC=40% $1,937 $1,581 $1,131 $1,578 $1,307 $962 !1,696 $1,397 $1,018 $1,338 $1,122 $849 $1,680 $1,384 $1,010

3 2+ThennostaticMixingValve $1,898 $1,554 $1,120 $1,573 $1,305 $967 :;1,657 $1,370 $1,007 $1,332 $1,121 $854 $1,659 $1,372 $1,008

4 3+Improved Fill Control $1,837 $1,514 $1,106 $1,544 $1,290 $969 51 596 $1,330 $993 $1,304 $1,106 $855 $1,616 $1,345 $1,002

5 4+RMC=35% $1.830 $1,518 $1,123 $1,537 $1,294 $985 ',1,622 $1359 $1,025 $1.330 $1,135 $888 $1,617 $1,355 $1,023

6 4+RMC=30% $1.800 $1,497 $1,113 $1.508 $1,273 $975 $1,626 $1,364 $1,031 $1.334 $1,140 $894 $1,596 $1,341 $1,017

0 Baseline(vert. axis) $2,112 $1,708 $1,197 $1,753 $1,433 $1,028 $1.724 $1,411 $1,015 $1,365 $1,136 $846 $1,818 $1,483 $1,059

7 Horizontal Axis Design $1,720 $1,448 $1,104 $1.614 $1,367 $1.054 $1,333 $1,151 $921 $1.227 $1,070 $872 $1,565 $1,330 $1,031

8 Horz. Axis w/recirculation $1,639 $1,387 $1,068 $1,554 $1,322 $1,028 $1,251 $1,090 $886 $1,166 $1,025 $846 $1,495 $1,277 $1,001

9 8+RMC = 50% $1.542 $1,317 $1,032 $1.457 $1,252 $992 $1.235 $1,081 $887 $1,150 $1,016 $847 $1,419 $1,223 $974

10 8+RMC = 40% $1,464 $1,260 $1,003 $1,379 $1,195 $962 $1,224 $1,076 $889 $1,139 $1,011 $849 $1,357 $1,179 $952

11 8+RMC=35% $1,457 $1,264 $1,019 $1,372 $1,199 $979 $1,250 $1,105 $921 $1,165 $1,040 $881 $1,359 $1,188 $973

12 8+RMC= 30% $1,428 $1,243 $1,009 $1,343 $1,178 $969 $1,254 $1,110 $927 $1,169 $1,045 $887 $1,338 $1,174 $967

13 13+Themnostaic Mixing Valve $1.429 $1,247 $1.017 $1,352 $1,188 $981 $1.255 $1,114 $935 $1.178 $1,055 $899 $1,343 $1,182 $977

0 Baseline (vert. axis) $2,112 $1,708 $1,197 $1,753 $1,433 $1,028 $1,724 $1,411 $1,015 $1,365 $1,136 $846 $1,818 $1,483 $1,059

14 0+Tighter TubClearance $2,051 $1,664 $1,175 $1,714 $1,406 $1,016 $1,664 $1,367 $993 $1,326 $1,109 $834 $1,769 $1,448 $1,042

15 14+Thermostaic Mixing Valve $2,015 $1,640 $1,165 $1,709 $1,406 $1,021 $1,627 $1,343 $983 $1,322 $1,109 $839 $1,750 $1,437 $1,041

16 15+lmproved Fill Control $1.969 $1,612 $1,159 $1.694 $1,401 $1.029 $1,582 $1,314 $976 $1.307 $1,104 $847 $1,721 $1,422 $1,042

17 Auto-Fill Control (10)

18 Adaptive Control (10)

19 0+Added Insulation $2.194 $1.791 $1,280 $1,836 $1,516 $1.111 $1,807 $1,494 $1,098 $1,448 $1.219 $929 $1,901 $1,566 $1.142

20 0+lncreasc MotorEfficiency $2.120 $1,719 $1.210 $1,762 $1,444 $1,041 $1,733 $1,422 $1,027 $1,374 $1.147 $859 $1,827 $1,494 $1,072

21 0+Suds Saving (9) $2,134 $1,736 $1,233 $1,764 $1,452 $1,058 $1,747 $1,439 $1,050 $1,376 $1,155 $875 $1,834 $1,506 $1,091

22 0+Direct Drive Motor $2.184 $1,792 $1.295 $1.825 $1,517 $1,126 $1.796 $1.495 $1.112 $1.438 $1,220 $944 $1,890 $1,566 $1,157

7/9/95 c:\clean3\clthwashspdsht\AHAM 15B2 4

 EE-RM-94-403 COMMENT 40

Clothes Washer·· Standard 

Proposed AHAM Test Procedure with RMC Added 

Life-Cycle Cost 

Design Design Option Life Cycle Cost ··RMC /MEF (Electric: Dryer) (14) 

Level Electric Water Heater Gas Water Heater 

Discount Rate Discount Rate 

2% .6% 15% 2% 6% 15% 

0 . Ba..eline (vert. axis) $2.112 $1,708 $1.197 $1.753 $1.433 $1.028 

I O+RMC= 50% $2.015 $1,638 $1.160 $1.657 $1.363 $992 

2 O+RMC = 40% $1.937 $1,581 $1.131 $1.578 $1.307 $962 

3 2 + Thennoslatic Mixing Valve $1.898 $1,554 $1.120 $1.573 $1.305 $967 

4 3+lmproved Fill Control $1.837 $1,514 $1.106 $1.544 $1.290 $969 

5 4+RMC= 35% $1.830 $1,518 $1.123 $1.537 $1.294 $985 

6 4+RMC';;30% $1.800 $1,497 ~~ 

$1.113 $1.508 $1,273 $975 

0 Baseline (vert. axis) S2.112 $1,708 $1.197 $1.753 $1.433 SI.028 

7 Horizontal Axis Design SI.720 $1,448 SI.104 $1.614 $1.367 $1.054 

8 Horz. Axis w/recirculation SI.639 $1,387 $1.068 $1.554 $1.322 SI.028 

9 8+RMC=50% $1.542 $1,317 $1.032 $1.457 $1.252 $992 

10 8+RMC=40% $1.464 $1,260 $1.003 $1.379 $1.195 $962 

II 8+RMC=35% $1.457 $1,264 $1.019 $1.372 $1.199 $979 

12 8+RMC = 30% $1.428 $1,243 $1.009 $1.343 $1.178 $969 

13 13+ Thennoslabc Mixing Valve $1.429 $1,247 $1.017 $1.352 $1.188 $981 

0 8a...eline (vert. axis) $2.112 $1,708 $1.197 $1.753 $1.433 $1.028 

14 0+ Tighter Tub Clearance $2.051 $1,664 $1.175 $1.714 $1.406 $1.016 

15 I4+Thennoslabc Mixing Valve $2.015 $1,640 $1.165 $1.709 $1,406 $1.021 

16 15+lmproved Fill Control $1.969 $1,612 $1.159 $1.694 $1,401 $1,029 

17 Auto-Fill Control (10) 

18 Adaptive Control (10) 

19 O+Added Insulation $2.194 $1.791 $l.280 $1.836 $1.516 $1.1 II 

20 O+lncreao;c Motor Efficiency S2.120 $1.719 $1.210 $1.762 $1,444 $1.041 

21 O+Suds Saving (9) S2.134 $1.736 $1.233 $1.764 $1,452 $1.058 

22 O+Direct Drive Motor $2.184 $1,792 $1.295 $1.825 $1,517 $1,126 

Life Cycle Cost -RMC /MEF (Gas Dryer) (14) 

Electric Water Heater Gas Water Heater 

Discount Rate Discount Rate 

2% 6% 15% 2% 6% 15% 

$1.724 $1,411 $1.015 $1.365 $1.136 $846 

~1.708 $1,402 $1.016 $1.349 $1.128 $847 

.1.696 $1,397 $1.0!8 $1.338 $1.122 $849 

;1.657 $1,370 $1.007 $1.332 $1,121 $854 

)1596 $1,330 $993 $1.304 $1.106 $855 

:';1.622 $1,359 $1.025 $1.330 . $1,135 $888 

$1.626 $1,364 $1,031 $1,334 $1.140 $894 

$1.724 $1,411 SI.015 SI,365 $1.136 $846 

$1.333 $1,151 $921 SI.227 $1.070 $872 

$1.251 $1,090 $886 $1.166 $1,Q25 $846 

$1.235 $1,081 $887 $1.150 $1.016 $847 

$1.224 $1,076 $889 $1.139 $1,011 $849 

$1.250 $1,105 $921 $1.165 $1.040 $881 

$1.254 $1,110 $927 $1.169 $1.045 $887 

$1.255 $1,114 $935 $1.178 $1.055 $899 

$1.724 $1,411 $1.015 $1.365 $1.136 $846 

$1.664 $1,367 $993 $1.326 $1.109 $834 

$1.627 $1,343 $983 $1.322 SI.109 S839 

$1.582 $1,314 $976 $1.307 $1.104 $847 

$1.807 $1,494 $1.098 $1.448 $1.219 $929 

$1,733 $1,422 $1.027 $1.374 $1.147 $859 

$1,747 $1,439 $1.050 $1.376 . $1.155 $875 

$1.796 $1.495 $1.112 $1.438 $1.220 $944 

7/l)/l)) c:\c1ean3\clthwash\.<;pdsht\AHAM 1582 

" . 

. Life Cycle .Cost •• Combined 

Water Heaters :45 % Elect.; 55% Ga.~ 

Dryers: 75.1% Elect.; 24.9% Ga~ 

2% 6% 15% 

$1.818 $1,483 $1.059 

$1.741 $1,428 $1.032 

$1.680 $1,384 . $1.010 

$1,659 $1,372 $1.008 

$1.616 $1,345 $1.002 

$1.617 $1,355 $1.023 

$1.596 SI,341 SI.OI7 

$1.818 $1,483 $1.059 

$1.565 $1,330 $1.031 

$1,495 $1,277 $1.001 

$1,419 $1,223 $974 

$1.357 $1,179 $952 

$1.359 $1,188 $973 

$1.338 $1,174 $967 

$1.343 $1,182 $977 

$1.818 $1,483 $1.059 

$1.769 $1,448 $1.042 

$1.750 $1,437 $1.041 

$1.721 $1,422 $1,042 

$1.901 $1.566 $1.142 

$1.827 $1,494 $1.072 

$1.834 $1.506 $1.091 

$1.890 $1.566 SI.157 

4 
FOOTNOTES

(I) Data based on original data submitted by AHAM

(2) Markup = 1.7

(3) Elect. (94$/kWh) = 0.0838

Gas (94$/MBTU) = 6.03

Water Cost ($/1000 gal.) = 2.84

Water Heater Efficiency: Elect. = 1.00; Gas =0.75

Fuel Price Multiplier: Elect. = 0.90; Gas = 1.01

Fraction Water Heaters: Elect. = 0.45; Gas = 0.55

Fraction Dryers: Elect. = 0.751; Gas = 0.249

(4) Baseline data assumed to be for vertical axis machine

(5) When options are combined, adjustments are made to avoid double counting savings

(6) The same RMC cost data was used for vertical and horizontal axis machines

(7) MEF based on AHAM final test procedure with DUF revised from 0.83 to 0.844

(8) Some design options were not combined with others due to high payback

(9) Sud Saving not combined with other options; limited use

(10) Auto Fill Control and Advanced Sensor/Control may be added when data is gathered on these design options

(I I) No adjustments in energy use were made for the differences in vertical and horizontal drum capacity

(12) Dollar values are shown in rounded dollars, actual values as provided by AHAM are used in all calculations

(13) No ldetcrgent savings are expected as water use is reduced

(14) Clothes Washer Life= 14.1 years

7/9/95 c:\clean3\clthwash\spdsht\AHAM 15B2 5

 EE-RM-94-403 COMMENT 40

FOOTNOTES 

( I) Data based on original data submined by AHAM 

(2) Markup = 1.7 

(3) Elect. (94$/kWh) = 0.0838 

Gas (94$IMBTU) = 6.03 

Water Cost ($11000 gal.) = 2.84 

Water Heater Efficiency: Elect. = 1.00; Gas =.0:75 

Fuel Price Multiplier: Elect. = 0.90; Gas = 1.01 

Fraction Water Heaters: Elect. = 0.45; Gas = 0.55 

Fraction Dryers: Elect. = 0.751; Gas = 0.249 

(4) Bao;eline data a~suined to be for vertical axis machine 

(5) When options are combined, adjustments are made to avoid double counting savings 

(6) The same RMC cost data was used for vertical and horizontal axis machines 

(7) MEF based on AHAM final test procedure with DUFrevised from 0.83 to 0.844 

(8) Some design options were not combined with others due to high payback 

(9) Sud Saving not combined with other options; limited use 

(10) Auto Fill Control and Advanced Sensor/Control may be added when data is gathered on the.o;e design options 

( II) No adjustments in energy use were made for the differences in vertical and horizontal drum capacity 

(12) Dollar values are shown in rounded dollars, actual values a~ provided by AHAM are used in all calculations 

( 11) No (it-tergent savings nre expected Il~ wllter use is reduced 

(14) Clothes WIl~herLife= 14.1 years 

7/9/95 c:\c1ean3\c1thwash\spdsht\AHAM 1582 5 
Standard Clothes Washer - AHAM -- with MEF

Electric Water Heater / Electric Dryer

$2,200

$2,100

$2,000

$1,900

$1,800

0'B

$1,600 

2

OI 4

$1,300 --

. 9

$1,200 - i 10 11

$1,100

$1,000

$900 -- I I. I

0.800 1.000 1.200 1.400 1.600 1.800 2.000

Modified Energy Factor

6

c:\clean3\clthwash\spdsht\AHAM 15B2.xls

 EE-RM-94-403 COMMENT 40

$2,200 

$2,100 

$2,000 

$1,900 

$I,ROO 

~ --

:.. $1,700 0 Q\ 

... 

'-' 

.. $1,600 CIJ 

Q 

U 

41 

U $1,5()() ~ 

U 

• 

~ $1,400 

::s 

$1,300 

$1,200 

$ J, 100 

$1,000 

$900 

0.800 1.000 

Standard Clothes Washer .. - AHAM -- with l\tIEF 

Electric Water Heater / Electric Dryer 

10 

1.200 1.400 1.600 

Modified Energy Factor 

c :\c\ean3\c\ thwash\spdsht\AHAM I5B 2.xls 

II 12 

l.SOO 2.000 

13 

~2% 

-0-6% 

-0-15% 

6 
Standard Clothes Washer -- AHAM -- with MEF

Electric Water Heater / Gas Dryer

$1,800

$1,700

$1,600

$1,500

g $1,400 0 6

U $1,300 -0-2%

-- 6% j -. 6%

& $1,200

8 9 11 12

10 $1,000

$900

$800 I I

0.800 1.000 1.200 1.400 1.600 1.800 2.000 2.200

Modified Energy Factor

c:\clean3\clthwash\spdsht\AHAM I 5B2.xls 7

 EE-RM-94-403 COMMENT 40

$1,800 

$1,700 

$1,600 

$1,500 

.-. 

~ 

~ $1,400 ~ 0 .... 

'-' 

... 

til 

Q 

U $1,300 G.I 

'ti 

>. 

U . 

~ $1,200 .. ...J 

$1,100 

$1,000 

$900 

$800 

0.800 

Standard Clothes Washer -- AHAM -- with MEF 

Electric Water Heater I Gas Dryer 

. 13 

8 9 11 12 

~~---.----~~A~--------~~~~~----~~ 1.000 1.200 1.400 1.600 1.800 2.000 

Modified Energy Factor 

c:\c1ean3\clthwash\spdsht\AHAM 15B2.xls 

2.200 

~2% 

-0-6% 

~15% 

7 
Standard Clothes Washer - AHAM - with MEF

Combined Water Heaters & Combined Dryers

$1,500

0 Discount Rate =6%

$1,400

$1, ~~~~~~31 

6

1,0 - \7

§ $1,300

ir. ,8

$1,200

10 13

$1,100III, 3

0.75 1.00 1.25 1.50 1.75 2.00 2.25

Modified Energy Factor

c:\clean3\clthwash\spdsht\AHAM 15B2.xls 8

 EE-RM-94-403 COMMENT 40

Standard Clothes Washer - AHAM ~ with MEF 

Combined Water Heaters & Combined Dryers 

$1,500 

o Discount Rate = 6% 

$1,400 

~ 

i 

.... 

'-' 

.. fI) 

Q 

U $1,300 

~ 

-Col 

~ 

U I 

~ ..J 

$1,200 11 

10 13 

$1,100 

0.75 1.00 1.25 1.50 1.75 2.00 2.25 

Modified Energy Factor 

c:\c1ean3\c1thwash\spdsht\AHAM 15B2.xls 8 
Payback - Combination Water Heater & Dryer

15.0

Clothes Washer Life = 14.1years 14.0

13.0

12.0

1.0

10.0

S 9.0

I 8.0

&.

7.0

6.0

5.0

""^-- ~116 2 13

4.0

4 9

3.0

2.0

0.750 1.250 1.750 2.250

Modified Energy Factor

7/10/95 c:\clean3\clthwash\spdsht\AHAM15B2.xls 9

 EE-RM-94-403 COMMENT 40

Payback - Combination Water Heater & Dryer 

15.0 

14.0 

ClothesWasher-1ife= 14.I--'years ______________________ _ 

13.0 

12.0 

11.0 

10.0 

--r! 

eG 

~ 

;... 9.0 "-' 

~ 

U 

eG 

.t:J. 8.0 ;... 

&! 

7.0 

6.0 

5.0 7 

12 13 II 

4.0 

3.n 

2 

2.0~--~~~~------~--r---------~~--------r-------------------~ 

0.750 1.250 1.750 2.250 

Modified Energy Factor 

7/10/95 c:\c1ean3\clthwash\spdsht\AHAM 15B2.xls 9 
Clothes Washer -- Standard

Proposed AHAM Test Procedure with RMC Added

392 cycles/yr Markup = 2.0 Markup = 1.7 Markup = 1.4 ________ _ ,Cost Cumm. Payback Life Cycle Cost Cost Cumm. Payback Life Cycle Cost Cost Cumm. Payback Life Cycle Cost

Design Option Total Retail Electric Dryer Electric Dryer Total Retail Electric Dryer Elect. Dryer Total Retail Electric Dryer Electric Dryer Mfg. Cost Elect. Gas Elect.W.H Gas W.H Mfg. Cost Elect. Gas Elect.W.H GasW.H. Mfg. Cost Elect. Gas lec. W.H Gas W.H

Cost W.H. W.H. D. Rate D. Rate Cost W.H. W.H. D. Rate D. Rate Cost W.H. W.H. D. Rate D. Rate - _---__ - -$ $ $ years years 6% 6% $ y years years 6% 6% $ $ years years 6% 6% 0 Baseline(vert.axis) $192 $383 $1,708 $1,433 $225 $383 $1,708 $1,433 $274 $383 $1,708 $1,433 I +RMC=50% $201 $402 2.1 2.1 $1,641 $1,366 $235 $399 1.8 1.8 $1,638 $1,363 $283 $396 1.5 1.5 $1,635 $1,360 2 +RMC=40% $210 $419 2.1 2.1 $1,587 $1,312 $243 $414 1.8 1.8 $1,581 $1,307 $292 $408 1.5 1.5 $1,576 $1,301 3 2+ThermoMixingValve $218 $436 2.5 2.8 $1,562 $1,313 $252 $428 2.1 2.4 $1,554 $1,305 $300 $420 1.7 2.0 $1,547 $1,298 4 3+lmprovedFillControl $235 $469 3.0 3.7 $1,527 $1,303 $268 $4';6 2.6 3.2 $1,514 $1,290 $317 $443 2.1 2.6 $1,501 $1,277 5 4+RMC=35% $257 $513 4.0 4.9 $1,537 $1,313 $290 $4'4 3.4 4.1 $1,518 $1,294 $339 $474 2.8 3.4 $1,498 $1,274 6 4+RMC=30% $261 $522 3.9 4.7 $1.518 $1,294 $295 $5t01 3.3 4.0 $1,497. $1,273 $343 $480 2.8 3.3 $1,476 $1,252

0 Baseline(vert. axis) $192 $383 $1,708 $1,433 $225 $383 $1,708 $1,433 $274 $383 $1,708 $1,433 7 HorizontalAxis Design $293 $586 4.4 7.9 $1,478 $1,397 $327 $555 3.7 6.7 $1,448 $1,367 $375 $525 3.1 5.6 $1,418 $1,337 8 Horz.Axisw/recirculation $296 $592 3.9 6.8 $1,418 $1,353 $330 $561 3.3 5.7 $1,387 $1,322 $378 $529 2.7 4.7 $1,356 $1,291 9 8+RMC=50% $306 $611 3.6 5.7 $1,351 $1,286 $339 $577 3.1 4.8 $1,317 $1,252 $388 $543 2.6 4.0 $1,283 $1,218 10 8+RMC=40% $314 $628 3.5 5.1 $1,297 $1,232 $348 $592 3.0 4.4 $1,260 $1,195 $396 $555 2.4 3.6 $1,224 $1,158 1 8+RMC = 35% $336 $672 3.9 5.6 $1,307 $1,242 $370 $629 3.3 4.8 $1,264 $1,199 $418 $585 2.7 3.9 $1,220 $1,155

13 

12 

13+Thermo 

+RMC=30% 

Mixing Valve 

$341 

$349 

$681 

$697 

3.9 5.5 $1,288 $1,223 $374 $636 3.3 4.7 $1,243 $1,178 $423 $592 2.7 3.8 $1,198 $1,133 4.0 5.7 $1,294 S1,235 382 $6 3.4 4.9 $i,247 51.188 $431 $603 2.8 4.0 $1,200 $1,141

0 Baseline (vert. axis) $192 $383 $1,708 $1,433 $225 $383 $1,708 $1,433 $274 $383 $1,708 $1,433 14 O+Tighter Tub Clearance $199 $397 2.4 3.4 $1,667 $1,408 $232 $395 2.0 2.9 $1,664 $1,406 $281 $393 1.7 2.4 $1,662 $1,404 15 14+Thermo Mixing Valve $207 $414 3.0 5.3 $1,644 $1,410 $241 $409 2.6 4.5 $1,640 $1,406 $289 $404 2.1 3.7 $1,635 $1,401 16 15+Improved FillControl $224 $447 4.0 6.9 $1,621 $1,410 $257 $438 3.4 5.9 $1,612 $1,401 $306 $428 2.8 4.8 $1,602 $1,391

17 Auto-Fill Control

18 Adaptive Control

19 O+Added Insulation $240 $481 NA NA $1,806 $1,531 $274 $466 NA NA $1,791 $1,516 $322 $451 NA NA $1,776 $1,501 20 0+Increase MotorEff. $201 $402 32.2 32.2 $1,722 $1,447 $235 $399 27.3 27.3 $1,719 $1,444 $283 $396 22.5 22.5 $1,716 $1,441 21 0+Suds Saving $219 $438 27.8 18.5 $1,745 $1,460 $253 $430 23.7 15.8 $1,736 $1,452 $301 $422 19.5 13.0 $1,728 $1,444 22 0+DirectDrive Motor $262 $525 35.8 35.8 $1,813 $1,538 $296 $503 30.4 30.4 $1,792 $1,517 $344 $482 25.0 25.0 $1,770 $1,495

c:\clean3\clthwash\spdsht\AHAM 15bc.xls

7/10/95 10 .... 10

 EE-RM-94-403 COMMENT 40

.. " -

Clothes Washer -- Standard 

Proposed AHAM Test Procedure with RMC Added 

392 cycleslyr Markup = 2.0 Markup = 1.7 Markup = 1.4 

Cost Cumm. Payback Life Cycle Cost Cost Cumm. Payback Life Cycle Cost Cost Curnm. Payback Life Cycle Cost 

Design Option Total Retail Electric Dryer Electric Dryer Total Retail Electric Dryer Elect. Dryer Total Retail Electric Dryer Electric Dryer 

Mfg. Cost Elect. Gas ~lect.W.H Gas W,H Mfg, Cost Elect. Gas EJect.W.H GasW,H. Mfg, Cost Elect. Gas !Elec. W.H Gas W.H 

Cost W.H. W.H. D. Rate D. Rate Cost W,H. W.H. D. Rate D. Rate Cost W.H. W.H. D. Rate D. Rate 

$ $ years years 6% 6% $ $ years years 6% 6% $ $ years years 6% 6% 

0 Baseline (ven. axis) $192 $383 $1,708 $1,433 $225 $383 $1,708 $1,433 $274 $383 $1,708 $1,433 

1 O+RMC = 50% $201 $402 2.1 2.1 $1,641 $1,366 $235 $399 1.8 t.8 $1,638 $1,363 $283 $396 1.5 1.5 $1.635 $1.360 

2 0+RMC=40% $210 $419 2.1 2.1 $1,587 $1,312 $243 $414 1.8 1.8 $1,581 $1,307 $292 $408 1.5 1.5 $1,576 $1,301 

3 2 + Thermo Mixing Valve $218 $436 2.5 2;8 $1,562 $1,313 $252 $4::8 2.1 2.4 $1,554 . $1,305 $300 $420 1.7 2.0 $1.547 $1,298 

4 3+lmproved Fill Control $235 $469 3.0 3.7 $1,527 $1,303 $268 $4:;6 2.6 3.2 $1,514 $1,290 $317 $443 2.1 2.6 $1,501 $1,277 

5 4+RMC=35% $257 $513 4.0 4.9 $1.537 $1,313 $290 $4(.4 3.4 4.1 $1,518 $1,294 $339 $474 2.8 3.4 $1,498 $1,274 

6 4+RMC=30% $261 $522 3.9 4.7 $1,518 $1,294 $295 $501 3.3 4.0 $1,497 $1,273 $343 $480 2.8 3.3 $1,476 $1,252 

0 Baseline (ven. axis) $192 $383 $1,708 $1,433 $225 $3};3 $1,708 $1,433 $274 $383 $1.708 $1,433 

7 Horizontal Axis Design $293 $586 4.4 7.9 $1,478 $1,397 $327 $555 3.7 6.7 $1,448 $1,367 $375 $525 3.1 5.6 $1,418 $1,337 

8 Horz. Axis w/recircu1ation $296 $592 3.9 6.8 $1,418 $1,353 $330 $561 3.3 5.7 $1,387 $1,322 $378 $529 2.7 4.7 $1,356 $1,291 

9 8+RMC=50% $306 $611 3.6 5.7 $1,351 $1,286 $339 $577 3.1 4.8 $1,317 $1,252 $388 $543 2.6 4.0 $1,283 $1,218 

10 8+RMC=40% $314 $628 3.5 5.1 $1,297 $1,232 $348 $592 3.0 4.4 $1,260 $1,195 $396 $555 2.4 3.6 $1,224 $1.158 

11 8+RMC=35% $336 $672 3;9 5.6 $1,307 $1,242 $370 $629 3.3 4.8 $1,264 $1,199 $418 $585 2.7 3.9 $1.220 $1,155 

12 8+RMC =30% $341 $681 3.9 5.5 $1,288 $1,223 $374 $636 3.3 4.7 $1,243 $1,178 $423 $592 2.7 3.8 $1,198 $1,133 

13 13+ Thermo Mixing Valve $349 $697 4.0 5.7 $1,294 $1,235 $382 $650 3.4 4.9 $i,247 $1,188 $431 $603 2.8 4.0 $1,200 $1,141 

0 Baseline (ven. axis) $192 $383 $1,708 $1,433 $225 $383 $1,708 $1,433 $274 $383 $1,708 $1,433 

14 0+ Tighter Tub Clearance $199 $397 2.4 3.4 $1,667 $1,408 $232 $395 2.0 2.9 $1,664 $1,406 $281 $393 1.7 2.4 $1.662 $1,404 

15 14+ Thermo Mixing Valve $207 $414 3.0 5.3 $1,644 $1.410 $241 $409 2.6 4.5 $1,640 $1,406 $289 $404 2.1 3.7 $1.635 $1.401 

16 15+lmproved Fill Control $224 $447 4.0 6.9 $1.621 $1.410 $257 $438 3.4 5.9 $1,612 $1.401 $306 $428 2.8 4.11 $1.602 $1.391 

17 Auto-FilI Control 

18 Adaptive Control 

19 O+Added Insulation $240 $481 NA NA $1,806 $1,531 $274 $466 NA NA $1,791 $1,516 $322 $451 NA NA $1.776 $1,501 

20 O+Increase Molor Eff. $201 $402 32.2 32.2 $1,722 $1,447 $235 $399 27.3 27.3 $1,719 $1.444 $283 $396 22.5 22.5 $1,716 $1,441 

21 O+Suds Saving $219 $438 27.8 18.5 $1,745 $1,460 $253 $430 23.7 15.8 $1,736 $1,452 $301 $422 19.5 13.0 $1,728 $1,444 

22 O+Direct Drive MOlor $262 $525 35.8 35.8 $1,813 $1,538 $296 $503 30.4 30.4 $1.792 $1,517 $344 $482 25.0 25.0 $1,770 $1,495 

c:\c1ean3\clthwash\spdsht\AHAM 15bc.xls 

7/10/95 10 
Overview

* Data Gathering

* Initial Engineering Analysis

Completed Early June, 1995

* Request for more data

* Site Visits

* Change in Analysis -- adjusted analysis of AHAM with RMC

* New data sent by AHAM as requested

This data will be incorporated into an updated Engineering Analysis

* Workshop

View I

 EE-RM-94-403 COMMENT 40

I 

• Data Gathering 

• Initial Engineering Analysis 

Completed Early June, 1995 

• Request for more data 

• Site Visits 

f 

Overview 

• Change in Analysis -- adjusted analysis of AHAM with RMC 

• New data sent 9Y AHAM as requested 

This data will be incorporate~ into an updated Engineering Analysis 

• Workshop 

Viewl 
Data Gathering

* Data questionnaire was sent to AHAM requesting cost and energy data on

various design options.

o Data was provided by AHAM based on two test procedures:

Existing DOE test procedure

Proposed AHAM (revision 6) test procedure

Neither of these test procedures account for the additional energy required to dry

the clothes after a spin cycle.

AHAM data did include data on energy that could be saved due to RMC design

options.

Initial Analysis

LBL analyzed AHAM data both with and without dryer energy included.

The data was analyzed and presented four ways:

Existing DOE Test Procedure, with EF,, 416 cycles/yr

Existing DOE Test Procedure, with MEF from DOE proposed test

procedure, 416 cycles/yr

° AHAM proposed test procedure revision 6, with EF, 392 cycles/yr

AHAM proposed test procedure, with modified DOE MEF, 392

cycles/yr

View 1

 EE-RM-94-403 COMMENT 40

• 

• 

( 

Data Gatheri.ng 

Data questionnaire was sent to AHAM requesting cost and energy data on 

various design options. 

Data was provided by AHAM based on two test procedures: 

Existing DOE test procedure 

Proposed AHAM (revision 6) test procedure 

Neither of these test procedures account for the additional energy required to dry 

the clothes after a spin cycle. 

AHAM data did include data on energy that could be saved due to RMC design 

options. 

Initial Analysis 

LBL analyzed AHAM data both with and without dryer energy included. 

The data was analyzed and presented four ways: 

o Existing DOE Test Procedure, with EFl

, 416 _cycles/yr 

o Existing DOE Test Procedure, with MEF from DOE proposed test 

procedure, 416 cycles/yr 

• AHAM proposed test procedure revision 6, with EF, 392 cycles/yr 

• ADAM proposed test procedure, with modified DOE MEF, 392 

cycles/yr 

Viewl 
Changes in Analysis

Since the Initial Engineering Analysis some adjustments have been made to the

methodology.

Currently these changes have oniv been made for the case of AHAM with dryer

energy accounted for.

Changed DUF from 0.80 to 0.844 (AHAM test procedure task force has

0.83)

From P&G public docket comment no. 32

Changed hot water inlet temperature from 130°F to 135°F

Previous water temperature difference = (130 - 60) = 70°F

New water temperature difference = (135 - 60) = 75°F

Changed 'Tighter Tub Tolerance" to 'Tighter Tub Clearance"

* Split off the design option 'Tighter Tub Clearance" from any combination

with a RMC option (based on incompatibility of these two options)

* Added payback and life-cycle cost assuming gas dryers as well as electric

dryers

* Changed manufacturer retail price-markup to 1.7

* Analyzed and compared analyses assuming different markups

· Other minor math corrections involving consistency in calculations

View 1

 EE-RM-94-403 COMMENT 40

Changes in Analysis 

Since the Initial Engineering Analysis some adjustments have been made to the 

methodology. 

Currently these changes have oniy been made for the case of AHAM with dryer 

energy accounted fOf. 

• Changed DUF from 0.80 to 0.844 (AHAM test procedure task force has,' 

0.83) 

Prom P&G public docket comment no. 32 

• Changed hot water inlet temperature from 1300P to 135°F 

Previous water temperature difference = (130 - 60) = 700 P 

New· water temperature difference = (135 - 60) = 75°P 

• Changed ''Tighter Tub Tolerance" to ''Tighter Tub Clearance" 

• Split off the design option "Tighter Tub Clearance" from any combination 

with a RMC option (based on incompatibility of these two options) 

• Added payback and life-cycle cost assuming gas dryers as well as electric 

dryers 

• Changed manufacturer retail price-markup to 1.7 

• Analyzed and compared analyses assuming different markups. 

• Other minor math corrections involving consistency in calculations 

Viewl 
Future Analysis

Additional information on design options and design option combinations was

requested from AHAM. This data has just been received (July 7. 1995) and will be used in future analysis.

Additional data on the following was sent:

* Improved Fill Control

* Horizontal Axis Design

Advanced Controls, Soil Load Sensor

e Automatic Fill Control

* Horizontal with 50% RMC

* Horizontal with 40% RMC

* Horizontal with Automatic Fill Control

Vertical Axis, Auto Fill Control, Thermostatically Controlled Mixing Valves, 50% RMC

Vertical Axis, Auto Fill Control, Thermostatically Controlled Mixing Valves, 40% RMC

View3

 EE-RM-94-403 COMMENT 40

Future Analvsis 

'" 

Additional information on design options and design option combinations was 

requested from AHAM. This data has just been received (July 7. 1995) and will be 

used in future analysis . . 

Additional data on the following was sent: 

• Improved Fill Control 

• Horizontal Axis Design 

• Advanced Controls, Soil Load Sensor 

Automatic Fill Control 

• Horizontal with 50% RMC 

• Horizontal with 40% RMC 

• Horizontal with Automatic Fill Control 

o Vertical Axis, Auto Fill Control, Thennostatically Controlled Mixing 

. Valves, 500/0 RMC 

• Vertical Axis, Auto Fill Control, Thennostatically Controlled Mixing 

Valves, 40% RMC 

View3 
Starting Parameters -- Engineering Analysis

Cost Data

Cost data for design options was provided by AHAM

Incremental cost is used where appropriate.

Markup

Markup = 1.7 (manufacturer's cost x 1.7 = retail price)

Calculated from average retail price from marketing survey ($383) and average

manufacturing cost ($230.40).

Manufacturing cost is based on AHAM industry average sales ($299.40) and gross

margin (23%) from ADL Aug. 1991 report to AHAM.

Calculated markup rounded up from 1.66 to 1.7. Markup of 1.7 yields

manufacturer's cost of $225.

Cycles per year:

DOE existing test procedure: 416

DOE proposed test procedure: 392

Fuel Prices:

Based on Annual Energy Outlook published by Energy Information Agency (EIA).

Prices are based on projected prices in the year 2000, in 1994 dollars.

Electricity Price = $0.0838/kWh

Gas Price = $6.03/MBTU

Water and Sewage Cost:

Prices from the 1994 Ernst & Young database were weighted for population by Al

Dietemann of Seattle Water Department. Prices have not been adjusted for future

predicted price increases.

Water/Sewage Disposal Cost = $2.84/kgal.

View4

 EE-RM-94-403 COMMENT 40

! 

Starting Parameters -- Engineering Analysis 

Cost Data 

Cost data for design options was provided by AHAM 

Incremental cost is used where appropriate. . 

Markup 

Markup = 1.7 (manufacturer's cost x 1.7 = retail price) 

Calculated from average retail price from marketing survey ($383) and average 

manufacturing cost ($230.40). . 

Manufacturing cost is based on AHAM industry average sales ($299.40) and gross 

margin (23%) from ADL Aug. 1991 report to ARAM. 

Calculated markup rounded up from 1.66 to 1.7. Markup of 1.7 yields 

manufacturer's cost of $225. 

Cycles per year: 

DOE existing test procedure: 416 . 

DOE proposed test procedure: 392 

Fuel Prices: , 

Based on Annual Energy Outlook published by Energy Infonnation Agency (EIA). 

Prices are based on projected prices in the year 2000, i~ 1994·dollars. 

Electricity.Price = $0.0838IkWh 

Gas Price = $6.03IMBTU 

Water and Sewage Cost: . 

Prices from the 1994 Ernst & Young database were weighted for population by Al 

Dietemann of Seattle Water Department. Prices have not been adjusted for future 

predicted price increases. 

Water/Sewage Disposal Cost = $2.84Ikgal. 

View4 
Starting Parameters -- Engineering Analysis

Clothes Washer Life = 14.1 years (from previous 1990 TSD, from AHAM information)

Water Heater Efficiencies:

From DOE test procedure

Electric = 1.00

Gas =0.75

Water Heater Type:

The DOE Energy Factor is currently based on electric water heater use. Where analysis was done based on actual distribution of gas and electric water heaters, the following breakdown (provided by AHAM) was used.

Fraction Electric = 0.45

Fraction Gas = 0.55

Clothes Dryer Type:

Initial analysis was done with only electric clothes dryers. Current analysis also includes gas dryers.

Fraction of clothes dryers that are electric: 0.751

Fraction of clothes dryers that are gas: 0.249

These fractions were calculated from the ratio of sales of dryers submitted by AHAM in response to the clothes dryer questionnaire, July 1995.

Remaining Moisture Content:

The remaining moisture content for both DOE and AHAM analysis was based on a baseline reference of 62% RMC. (See attachment for details)

View4

 EE-RM-94-403 COMMENT 40

! 

Starting Parameters -- Engineering Analysis 

Clothes Washer Life = 14.1 years (from previous 1990 TSD, from AHAM 

information) 

Water Heater Efficiencies: 

From DOE test procedure 

Electric = 1.00 

Gas = 0.75 

Water Heater Type: 

The DOE Energy Factor is currently based on e~lectric water heater use. Where 

analysis was done based on actual distribution of gas and electric water heaters, the 

following breakdown (provided by AHAM) was used. 

. Fraction Electric = 0.45 

Fraction Gas = 0.55 

Clothes Dryer Type: 

Initiai analysis was done with only electric clothes dryers. Current analysis.also 

includes gas dryers. 

Fraction of clothes dryers that are electric:: 0.7S1 

Fraction of clothes dryers that are gas: 0.249 

These fractions were calculated from the ratio of sales of dryers submitted by AHAM 

in response to the clothes dryer questionnaire, July 1995. . 

Remaining Moisture Content: 

The remaining moisture content for both DOE and AHAM analysis was ·based ona 

baseline reference of 62% RMC. (See attachment for details) 

View4 
Engineering Analysis

General Assumptions

No adjustments to energy savings for differences in drum capacity.

(i.e. assume same laundry load handling capability)

Adjustments to AHAM data before Design Options are Combined

Set water use for all RMC design options to baseline water use. These values

differed only because of statistical reasons due to shipment weighted averages and number of manufacturers responding.

Set Total Gallons equal for "Reduce Thermal Mass", "Added Insulation",

"Direct Drive Motor". These design options shouldn't affect water

consumption.

* Equalize Clothes Container volume where they differ for statistical reasons

only. Recalculate the Energy Factor.

* Set the "Reduce Thermal Mass" and " Added Insulation" mechanical energy

use to the baseline value.

* Set "Direct Drive Motor" hot water usage to the baseline value.

Design Options Not Analyzed in Combination with Others -- Long Payback

* Reduce Thermal Mass

* Added Insulation

* Increase Motor Efficiency

* Direct Drive Motor

Design Options Not Analyzed in Combination with Others -- Other Reasons

* Suds Saver: requires the use of an external wash tub.

View4

 EE-RM-94-403 COMMENT 40

( 

Engineering Analysis 

General Assumptions 

• No adjustments to energy savings for differences in drum capacity. 

(i.e. assume same laundry load handling capability) 

Adjustments to AHAM data before Design Options are Combined 

• Set water use for all RMC design options to baseline water use. These values 

differed only because of statistical reasons due to shipment weighted averages 

and number of manufacturers responding. 

• Set Total Gallons equal for "Reduce Thermal Mass", "Added Insulation", 

"Direct Drive Motor". These design options shouldn't affect water 

consumption. 

• Equalize Clothes Container volume where they differ for statistical reasons 

only. Recalculate the Energy Factor. 

• Set the "Reduce Thermal Mass" and " Added Insulation" mechanical energy. 

use· to the baseline value. 

• Set "Direct Drive Motor" hot water usage to the baseline value. 

'. 

'. 

Design Options Not Analyzed in Combination with Others -- Long Payback 

• Reduce Thermal Mass 

• Added Insulation 

• Increase Motor Efficiency 

• Direct Drive Motor 

Design Options Not Analyzed in Combination with Others _. Other Reasons 

• Suds Saver: requires the use of anextemal wash tub. 

View4 
Preliminary Engineering Analysis Example

AHAM (revision 6) with RMC provision added.

Initial Considerations

Tighter tub clearance was not combined with:

a) Lower RMC options

b) Horizontal Axis

The design option with the lowest payback period typically becomes the first ranked

option.

Technically RMC should be the first option on the horizontal axis path because it had

a lower payback than the horizontal axis option, but since a horizontal axis machine

may affect the cost/performance of adding on a RMC feature, the order was changed..

Baseline (vertical axis)

Retail Cost: Verbal by Wayne Morris of AHAM

(based on marketing research survey)

Manufacturer cost = retail cost / markup

E.F.: Used value submitted by AHAM based on shipment weighted average

View6

 EE-RM-94-403 COMMENT 40

! 

Preliminary Engineering Analysis Example 

AHAM(revision 6) with RMC provision added. 

Initial Considerations 

Tighter tub clearance was not combined with: 

a) Lower RMC option's 

b) Horizontal Axis 

The design option with the lowest payback period typically becomes the first ranked 

option. 

Technically RMC should be the first option on the horizontal axis path because it had 

a lower payback than the horizontal axis option, but since a horizontal axis machine 

may affect the cost/performance of adding on a RMC feature, the order was changed.. 

Baseline (vertical axis) 

Retail Cost: Verbal by Wayne Morris of AHAM 

(based on marketing research survey) 

Manufacturer cost = retail cost I markup 

E~F.: Used value submitted by AHAM based on shipment weighted average 

View6 
Preliminarv Engineering Analysis Example

AHAM (revision 6) with RMC provision added

Design Levels 1-6 (Vertical Axis)

Level 1: RMC = 50%

Machine energy increases, used values provided by AHAM.

Hot water energy use remains unchanged from baseline

Total Energy column = Mechanical + Hot Water Energy Dryer energy is accounted for in modified energy factor (MEF) Lowering RMC doesn't change water use

Level 2: Level 1 + RMC = 40%

Machine energy increases, used AHAM value

Add incremental cost to go from 50% to 40% RMC

Level 3: Level 2 + Thermostatic Mixing Valve

Hot Water use is decreased by a percentage:

(TMV hot water/ Baseline hot water) * (level 2 hot water) Machine energy remains the same

Level 4: Level 3 + Improved Fill Control

Hot Water use changes:

(IFC hot water / Baseline hot water)* (Level 3 hot water) Other parameters stay constant

Total water use is decreased (AHAM value)

Level 5: Level 4 + RMC = 35%

Hot water usage stays the same

Machine Energy changes; AHAM value

Level 6: RMC = Level 4 + 30%

Hotwater usage stays the same

Machine energy increases; AHAM value

View7

 EE-RM-94-403 COMMENT 40

Preliminary Engineering Analysis Example 

AHAM (revision 6) with RMC provision added . 

Design Levels 1-6 (Vertical Axis) 

Levell: RMC = 50% 

Machine energy increases, used values provided by AHAM. 

Hot water energy use remains unchanged from baseline 

Total Energy column = Mechanical + Hot Water Energy 

Dryer energy is accounted for in modified energy factor (MEF) 

Lowering RMC doesn't change water use 

Level 2: Levell + lRMC = 40% 

Machine energy increases, used AHAM value 

Add incremental cost to go from 50% to 40% RMC 

Level 3: Level 2 + Thermostatic Mixing Valve 

Hot Water use is decreased by a percentage: 

(TMV hotwaterl Baseline hot water) * (level 2 hot water) 

Machine energy remains the same. 

Level 4: Level 3 + Improved Fill Control 

Hot Water use changes: 

(IFC hot water I Baseline hot water)* (Level 3 hot water) 

Other parameters stay constant 

Total water use is decreased (AHAMvalue) 

LevelS: Level 4 + RMC = 35% 

Hot water uSage stays the same 

Machine Energy changes; AHAM value 

Level 6: RMe= Level 4 + 30% 

Hor-water usage stays the same 

Machine energy increases; AHAM value 

View7 
Design Levels 7 - 14 (Horizontal Axis)

Level 7: Horizontal Axis Design

Used AHAM values

Level 8: Horizontal Axis with recirculation

Even though this option had a lower payback than horizontal axis. it was placed after horizontal since it is a kind of horizontal axis machine with further features.

It is understood that the design may be significantly different than horizontal

axis and not necessarily a simple add on feature.

Used actual values submitted by AHAM (did not combine with Level 8)

Level 9: Level 8 + RMC = 50%

Hot Water usage remains unchanged

Mechanical Energy (in kWh/cycle)

= A + (B - C) = Level 9 + (difference between baseline and RMC = 50%) where: A = horiz. axis w/recirculation

B = for 50% RMC design option only

C = baseline mechanical energy

Level 10: Level 8 + RMC = 40%

Same methodology as Level 10

Level 11: Level 8 + RMC =35%

Machine energy increases (same methodology as other RMC design options) Hot Water usage remains unchanged from previous design option

Level 12: Level 8 + RMC = 30%

Machine energy increases (same methodology as other RMC design options) Hot Water usage remains unchanged from previous design option

Level 13: Level 12 + Thermostatic Mixing Valve

Mechanical Energy remains unchanged from Level 13

Hot Water Energy

= (original TMV hot water /baseline hot water)*( Level 13 hot water)

i.e. hot water is reduced by a percentage of previous design option hot water use

View7

 EE-RM-94-403 COMMENT 40

.. 

{ 

Design Levels 7 - 14 (Horizontal Axis) 

Level 7: Horizontal Axis Design 

Used AHAM values 

Level 8: Horizontal Axis with recirculation 

. Even though this option had a lower payback than horizontal axis. it was placed after 

horizontal since it is a kind of horizontal axis machine with funher features. 

It is understood that the design may be significantly different than horizontal 

axis and not necessarily a simple add on feature. 

Used actual values submitted by AHAM (did not combine with Level 8) 

Level 9: Level 8 + RMC = 50% 

Hot Water usage remains unchanged. 

Mechanical Energy (in kWh/cycle) 

= A + (B - C) = Level 9 + (difference between baseline and RMC = 50%) 

where: A= horiz. axis w/recirculation 

B = for 50% RMC design option only 

C.= baseline mechanical energy 

Level 10: Level 8 + RMC = 40% 

Same methodology as Level 10 

Level 11: Level 8 + RMC =35% 

Machine energy increases (same methodology as other RMC design options) 

HotWater usage remains unchangedJrom previous design option 

Level 12: Level 8 + RMC = 30% . .. . 

Machine energy increases (same methodology as other RMC design options) 

Hot Water usage remains unchanged from previous design option 

Level 13: Level 12 + Thermostatic Mixing Valve 

Mechanical Energy remains uD;changed from Level 13 

Hot Water Energy 

= (original TMV hot water /baseline hot water)*( Level 13 hot water) 

i.e. hot water is reduced by a percentage of previous design option hot water use 

View7 
Design Levels 14-16 (Without RMC)

Level 14: Tighter Tub Clearance

Used values submitted by AHAM

Level 15: Level 14 + Thermostatic Mixing Valve

Hot water use changes

Hot Water Energy = (original TMV hot water/baseline hot water)x( Level 14 hot water)

Level 16:Level 15 + Improved Fill Control

Hot water use changes

View7

 EE-RM-94-403 COMMENT 40

Design Levels 14-16 (WithoutlL,tC) 

Level 14: Tighter Tub Clearance 

Used values submitted by AHAM 

! 

Level 15: Level 14 + Thermostatic Mixing Valve 

Hot water use changes 

Hot Water Energy = (original TMV hot wateflbaseline hot water)x( Level 14 hot water) 

Level 16:Level 15 + Improved Fill Control 

Hot water use changes 

View7 
CALCULATIONS

Energy Factor - EF

EF = Clothes Container Volume - ( Hot Water Energy + Mechanical Energy)

Modified Energy Factor -- MEF

MEF=

Clothes Container Volume - (Hot Water Energy + Mechanical Energy + Dryer Energy)

Moisture Removal (Dryer) Energy -- H,

AHAM submitted shipment weighted average data showing the baseline washer had a

Remaining Moisture Content (RMC) of 62%. This means that the weight of a wet test

load weighed 62% more than a bone dry test load, (1.62 x dry test load).

View7

 EE-RM-94-403 COMMENT 40

.. , 

I 

" 

CALCULA TrONS 

Energy Factor -- EF 

EF = Clothes Container Volume -:- ( Hot Water Energy + Mechanical Energy) 

Modified Energy Factor -- LWEF 

MEF= 

Clothes Container Volume -:- (Hot Water Energy + /.\1echanical Energy + Dryer 

Energy) 

Moisture Removal (Dryer) Energy -- H., 

AHAM submitted shipment weighted average data showing the baseline washer had a 

Remaining Moisture Content (RMC) of 62%. This means that the weight of a wet test 

load weighed62% more than a bone dry test load, (1.62 x dry test load). . '. . . 

View7 
CALCULATIONS

AHAM Pronosed Rule Modified to Include Moisture Removal (Dryer) Energy

The dryer energy was similarly defined for the AHAM w/ RMC case. The baseline RMC

is still 62%, but the final dry test load has a residual RMC of 4% instead of bone dry. In

addition several other factors have been added:

1) Dryer Utilization Factor (DUF): the ratio of dryer cycles to clothes washer cycles per

year.

2) Maximum Clothes Load: the maximum clothes load for a given size clothes washer.

For a 2.9 to 3.0 cubic foot washer the maximum load is 12.1 lbs (AHAM Proposed

Test Procedure). In the proposed test procedure the load size varies with drum

capacity but for this analysis the load size was kept constant.

3) Average Load Fraction: the P&G average load to maximum load fraction is 0.52.

The AHAM proposed moisture removal energy is:

H,= (W 2 - W ) x Df x DUF

Where: W2 = (RMC + 1) x Load, lbs/cycle

WI = (RMCd,,, + 1) x Load, lbs/cycle, (at RMC~,d = 4%)

Df = 0.5 kWh/lb of moisture (energy required to remove moisture)

DUF = 0.844 (AHAM has 0.83, Initial Analysis used 0.80)

Load = Maximum Clothes Load x Average Load Fraction

= 12.1 lbs/cycle x 0.52

= 6.29 lbs

For Example:

W22RMc = (0.62 + 1) x 6.29 lbs/cycle= 10.19 lbs/cycle

Wi,4%Mc = (0.04 + 1) x 6.29 Ibs/cycle =6.54 lbs/cycle

View8

 EE-RM-94-403 COMMENT 40

( , 

I 

CALCULATIONS 

AHAM Prooosed Rule Modified to Include Moisture Removal (Dryer) Energy 

The dryer energy was similarly defined for the AHAM wi RMC case. The baseline RMC. 

is still 62%, but the final dry test load has aresidual RMC of 4% instead of bone dry. In 

addition several other factors have been added: 

1) Dryer Utilization Factor (DUF): the ratio of dryer cycles to clothes washer cycles per 

year. 

2) Maximum Clothes Load: the maximum clothes load for a given size clothes washer. 

For a 2.9 to 3.0 cubic foot washer the maximum load is l2.1lbs (AHAM Proposed 

Test Procedure). In the proposed test procedure the load size varies with drum 

capacity but for this analysis the load size was kept constant. 

3) Average Load Fraction: the P&G average load to maximum load fraction is 0.52. 

The AHAM proposed moisture removal energy is: 

Where: 

For Example: 

ViewS 

W2,62CJ.RMC 

W1,4CJ.RMC 

= (RMC + 1) x Load, llbs/cycle 

= (RMCresidual + I) x Load, lbs/cycle, (at RMCresidual = 4%) 

= 0.5 kWhllb of moisture (energy required to remove moisture) 

= O.S44 (AHAM has 0.S3, Initial Analysis used O.SO) 

= Maximum· Clothes Load x Average Load Fraction . 

= 12.1 Ibs/cycle x 0.52 . 

= 6.291bs . . 

= (0.62 + 1) x 6.29 lbs/cycle = 10.19lbs/cycle 

= (0.04 + 1) x 6.29lbs/cycle =6.541bslcycle 
Adjustment to De for Gas Dryers

A value of 0.5 kWh/lb is used to calculate energy required to dry clothes in an electric dryer. This value may not correspond to the energy required by a gas dryer. A

correction factor was derived from data submitted by AHAM (June 27. 1995) as part of the Dryer data submittal.

From AHAM Dryer data submittal:

kWh/cycle @70% RMC

Dryer Gas Energy Electric Energy Total Energy kWh/lb

Standard Electric 2.210 2.210 0.32

Standard Gas 2.379 0.102 2.481 0.35

For simplification assume all the gas energy is priced at the cost of gas (including the small amount of electricity. A simple ratio of the drying efficiencies can then be used as

a correction factor to the Df use in previously explained equations

Gas correction factor = (0.35/0.32)

Df = Df x (035/0.32)

View8

 EE-RM-94-403 COMMENT 40

4 ~ 4·: 

I 

Adjustment to De! for Gas Dryers 

A value of 0.5 kWhllb is used to calculate energy required to dry clothes in an electric 

dryer. TIris value may not correspond to the energy required by a gas dryer. A 

correction factor was derived from data submitted by AHAM (June 27, 1995) as part of 

the Dryer data submittal. 

From AHAM Dryer data submittal: 

kWh/cycle @70% RMC 

Dryer Gas Energy Electric Energy Total Energy k WbIlb 

Standard Electric 2.210 2210 0.32 

Standard Gas 2.379 0.102 2.481 0.35 

For simplification assume all the gas energy is priced at the cost of gas (including the 

small amount of electricity. A simple ratio of the drying efficiencies can then be used as 

a correction factor to the De! use in previously explained equations 

Gas correction factor = (0.35/0.32) 

D eJ,ga = De/ x (0.3510.32) 

View8 
HOT WATER INLET TEMPERATURE ADJUSTMENTS

Approach:

Multiply the hot water energy use per cycle by the ratio of the increase in hot water inlet

temperature and the difference between the old hot water inlet and cold water

temperatures.

Assumptions:

1. HC. WC, CC Machine

2. New hot water inlet temperature = Te w hot = 135°F

3: From AHAM revision #8 test procedure

a) Thot = hot water temperature = 130°F

b) Told = cold water temperature = 60°F

Equation:

EUew hot water = EUhot water X 1 + { (new hot - Tho) (Thot - Tcold))

where EUnew hot water = hot water energy use per cycle based on Tnew hot

EUhot waer = hot water energy use per cycle based on Thot

Examples:

1) Calculate new hot water energy use from spreadsheet data case AHAM w/RMC, 11B

EUnewhotwater = 1.469 kWh/cyc x [-1 + {(135F - 130°F) - (130°F- 60°F)}]

EUew hot wa = 1.574 kWh/cyc

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 EE-RM-94-403 COMMENT 40

I 

HOT 'VATER INLET TEMPERATURE ADJUSTMENTS 

.. Approach: 

Multiply the hot water energy use per cycle by the ratio of the increase in hot water inlet 

temperature and the difference between the old hot water inlet and cold water 

. temperarures. 

Assumptions: 

1. He. WC, CC Machine 

2. New hot water inlet temperature = Tnew hot = 135°F 

3: FromAHAM revision #8 test procedure 

a) Thot = hot water temperature = 130°F 

b) TCOld = cold water temperature = 60°F 

Equation: 

where 

Examples: 

Ellnew hot warer = hot water energy use per cycle based on T new hot 

EUhot water = hot water energy use per cycle based on T hot 

1) Calculate new hot water energy lise froI.D spreadsheet data ease AHAM wIRMC; lIB 

EUnewbolwar.er = 1.469 kWh/cye x tI + {(135°P - 130°F) -:- (l30oP - 60°F)}] 

. EUnewbotwar.er = 1.574 kWh/cyc 

View8 
Horizontal Axis with Recirculation

Same procedure as for Horizontal Axis

Increased Motor Efficiency

Same value as baseline

Suds Saving

Add 0.105 to original value

Added Insulation

Same as baseline

Direct Drive Motor

Same as baseline

Thermostatic Mixing Valve

Same as original value. Assumes water is tempered to original temperature before assuming a

higher inlet water temperature.

TMV1 35 = (TMV135/Baselinel3 5) x Previous design option

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 EE-RM-94-403 COMMENT 40

, 

41" i ;. • 

Horizontal Axis with Recirculation 

Same procedure as for Horizontal' Axis 

Increased Motor Efficiency 

Same value as baseline 

Suds Saving 

Add 0.105 to original value· . 

Added Insulation 

Same as baseline 

Direct Drive Motor 

Same as baseline 

Thermostatic Mixing Valve 

Same as original value. Assumes water is tempered to original temperature before assuming a 

higher inlet water temperature. 

TMV 13S = (TMV 13SlBaselinel3S) x Previous deSign option 

View 10 
Engineering Analysis Tables

Page 1 Cost / Washer Energy / Dryer Energy / Water

Page 2 Cummulative Payback

Simple payback referenced to baseline values

Page 3 Annual Operating Costs

Page 4 Life Cycle Costs

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 EE-RM-94-403 COMMENT 40

I 

Engineering Analysis Tables 

• 

Page 1 Cost / Washer Energy / Dryer Energy / Water 

Page 2 Cummulative Payback 

Simple payback referenced to baseline values 

Page 3 Annual Operating Costs 

Page 4 Life Cycle Costs " 

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.' > u * '

/ -

Engineering Analysis Calculations -- Examples

Energy Usage

Dryer Energy Required - Hv -- kWh/cycle

H, = [(RMC + 1) x (Ibs clothes)] - [(RMCresidual + 1) x (Ibs clothes)]} x Dx x DUF

H, = ([(0.62 + 1) x (12.1 x 0.52)] - [(0.04 + 1) x (12.1 x 0.52)] x 0.5 kWh/lb x 0.844

Annual Operating Costs

Hot Water Energy, $/yr

$/yr = (kWh/cycle) x (392 cycles/yr) x (fuel price in $/kWh) x (Fuel Price Multiplier)

Electric Dryer, $/yr

$/yr = , x (Fuel Price Multiplier) x (Electricity price-in $/kWh) x 392 cycles/yr

Gas Dryer, $/yr

$/yr = , x (corr. factor for gas Def) x (fuel price mult.) x (gas fuel price in $/MBTU)

x (392 cycles/yr) x (3.412/1000 MBTU/kWh)

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 EE-RM-94-403 COMMENT 40

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! 

Engineering Analysis Calculations •• Examples 

Energy Usage 

Dryer Energy Required .• Hv •• kWh/cycle 

Hv = {[(RMC + 1) x (lbs clothes)] - [(RMCresidual + 1) x (lbs clothes)]} x D;f x DUF 

Hv = {[(0.62 + 1) x (12.1 x 0.52)] - [(0.04 + 1) x (12.1 x 0.52)]} x 0.5 kWhllb x 0.844 

Annual Operating Costs 

Hot Water Energy, $/yr 

$/yr = (kWh/cycle) x (392 cycles/yr) x (fuel price in $IkWh) x (Fuel Price Mul,!plier) 

. Electric Dryer, $/yr 

$/yr = ~ x (Fuel Price Multiplier) x (Electricity price-in $/kWh) x 392 cycles/yr 

Gas Dryer, $/yr 

. . 

$/yr = ~ x (corr. factor for gas D~f) x (fuel price mult.) x (gas fuel price in $/MBTU) 

x (392 CYcles/yr) x (3.41211000 MBTUIkWh) 

View 8 
Engineering Analysis Calculations -- Examples

Payback

Payback = Delta Retail Cost/Delta Operating Cost

where:

Delta Retail Cost = (Retail cost of option) - (Retail cost of baseline)

Delta Operating Cost = (S/yr baseline) - ($/yr option)

Life Cycle Cost

LCC = Retail Cost + PV(discount rate, clothes washer life, total $/yr operating cost)

Where operating costs include:

Hot Water Energy

Machine Energy

Water Supply and Disposal

Dryer Energy to dry remaining moisture

PV= [1- ]OC

r 1+r

Where

PV = Present Value

r = discount rate

N = Lifetime

OC = Operating Cost

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 EE-RM-94-403 COMMENT 40

• '! .. . 

: ... b 

f 

Engineering Analysis Calculations -- Examples 

Payback 

Payback = Delta Retail Cost/ Delta Operating Cost 

where: 

Delta Retail Cost = (Retail cost of option) - (Retail cost of baseline) 

Delta Operating Cost = (S/yr baseline) - ($/yr option) 

Life Cycle Cost 

LCC= Retail Cost + PV(discount rate, clothes washer life, total $/yr operating cost) 

Where operating costs include: 

Hot Water Energy 

Machine Energy 

Water Supply and Disposal 

Dryer Energy to dry remaining moisture 

Where 

View12 

PV = Present Value 

r = discount rate 

N = Lifetime 

OC = Operating Cost 

'.