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Federal Register / Vol. 86, No. 167 / Wednesday, September 1, 2021 / Proposed Rules
RMCcorr = A RMCT + B 100%
Where:
A and B are the coefficients of the RMC
correction curve as defined in section 8.7
of appendix J3 to this subpart.
RMCT = As defined in section 4.3.4 of this appendix.
4.4 Per-cycle energy consumption for removal of moisture from test load. Calculate the per-cycle energy required to remove the remaining moisture of the test load, DET, expressed in kilowatt-hours per cycle and defined as:
DET = LUFL Large test load weight +
LUFS Small test load weight
RMCcorr4% DEF DUF
Where:
LUFL and LUFS are defined in section 4.1.3
of this appendix.
Large and small test load weights are defined in Table 5.1 of this appendix.
RMCcorr = As defined in section 4.3.5 of this appendix.
DEF = Nominal energy required for a clothes dryer to remove moisture from clothes =
0.5 kWh/lb 1.1 kWh/kg.
DUF = Dryer usage factor, percentage of washer loads dried in a clothes dryer =
0.91.
4.5 Cycle time.
4.5.1 Per-cycle temperature-weighted cycle time for all load sizes tested. Calculate the per-cycle temperature-weighted cycle time for the large test load size, TL, and the small test load size, TS, expressed in minutes, and defined as:
a TL = TxL TUFx + ThL TUFh + TwL
TUFw + TwwL TUFww + TcL
TUFc b TS = TxS TUFx + ThS TUFh + TwS
TUFw + TwwS TUFww + TcS
TUFc Where:
TxL, ThL, TwL, TwwL, TcL, TxS, ThS, TwS, TwwS, and TcS are the cycle time values, in minutes as measured in section 3.3 of this appendix for automatic clothes washers or section 3.4 of this appendix for semi-automatic clothes washers.
TUFx, TUFh, TUFw, TUFww, and TUFc are temperature use factors for Extra-Hot Wash/Cold Rinse, Hot Wash/Cold Rinse, Warm Wash/Cold Rinse, Warm Wash/
Warm Rinse, and Cold Wash/Cold Rinse temperature selections, respectively, as defined in Table 4.1.1 of this appendix.
4.5.2 Total weighted per-cycle cycle time.
Calculate the total weighted per-cycle cycle
time, TT, expressed in minutes, rounded to the nearest minute, and defined as:
TT = TL LUFL + TS LUFS
Where:
TL and TS are defined in section 4.5.1 of this appendix.
LUFL and LUFS are defined in section 4.1.3
of this appendix.
4.6 Combined low-power mode energy consumption.
4.6.1 Annual hours in default inactive/off mode. Calculate the annual hours spent in default inactive/off mode, Sdefault, expressed in hours and defined as:
Sdefault = 8,760234 TT/60/N
Where:
TT = As defined in section 4.5.2 of this appendix, in minutes.
N = Number of inactive/off modes, defined as 1 if no optional lowest-power inactive/off mode is available; otherwise 2.
8,760 = Total number of hours in a year.
234 = Representative average number of clothes washer cycles in a year.
60 = Conversion from minutes to hours.
4.6.2 Per-cycle combined low-power mode energy consumption. Calculate the percycle combined low-power mode energy consumption, ETLP, expressed in kilowatthours per cycle and defined as:
ETLP = Pdefault Sdefault + Plowest Slowest Kp/234
Where:
Pdefault = Default inactive/off mode power, in watts, as measured in section 3.5.3 of this appendix.
Plowest = Lowest-power inactive/off mode power, in watts, as measured in section 3.5.4 of this appendix for clothes washers with a switch, dial, or button that can be optionally selected by the end user to achieve a lower-power inactive/off mode than the default inactive/off mode; otherwise, Plowest = 0.
Sdefault = Annual hours in default inactive/off mode, as calculated in section 4.6.1 of this appendix.
Slowest = Annual hours in lowest-power inactive/off mode, defined as 0 if no optional lowest-power inactive/off mode is available; otherwise equal to Sdefault, as calculated in section 4.6.1 of this appendix.
Kp = Conversion factor of watt-hours to kilowatt-hours = 0.001.

234 = Representative average number of clothes washer cycles in a year.
4.7 Water efficiency ratio. Calculate the water efficiency ratio, WER, expressed in pounds per gallon per cycle or kilograms per liter per cycle, as:
WER = LUFL Large test load weight +
LUFS Small test load weight/QT
Where:
LUFL and LUFS are defined in section 4.1.3
of this appendix.
Large and small test load weights are defined in Table 5.1 of this appendix.
QT = As defined in section 4.2.4 of this appendix.
4.8 Active-mode energy efficiency ratio.
Calculate the active-mode energy efficiency ratio, AEER, expressed in pounds per kilowatt-hour per cycle or kilograms per kilowatt-hour per cycle and defined as:
AEER = LUFL Large test load weight +
LUFS Small test load weight/MET +
HET + DET
Where:
LUFL and LUFS are defined in section 4.1.3
of this appendix.
Large and small test load weights are defined in Table 5.1 of this appendix.
MET = As defined in section 4.1.6 of this appendix.
HET = As defined in section 4.1.3 of this appendix.
DET = As defined in section 4.4 of this appendix.
4.9 Energy efficiency ratio. Calculate the energy efficiency ratio, EER, expressed in pounds per kilowatt-hour per cycle or kilograms per kilowatt-hour per cycle and defined as:
EER = LUFL Large test load weight +
LUFS Small test load weight/MET +
HET + DET + ETLP
Where:
LUFL and LUFS are defined in section 4.1.3
of this appendix.
Large and small test load weights are defined in Table 5.1 of this appendix.
MET = As defined in section 4.1.6 of this appendix.
HET = As defined in section 4.1.3 of this appendix.
DET = As defined in section 4.4 of this appendix.
ETLP = As defined in section 4.6.2 of this appendix.
5. Test Loads
TABLE 5.1TEST LOAD SIZES

khammond on DSKJM1Z7X2PROD with PROPOSALS3

Container volume
Small load
cu. ft.

liter <

<

0.000.80
0.800.90
0.901.00
1.001.10
1.101.20
1.201.30
1.301.40
1.401.50

VerDate Sep<11>2014

17:31 Aug 31, 2021

lb 0.0022.7
22.725.5
25.528.3
28.331.1
31.134.0
34.036.8
36.839.6
39.642.5

Jkt 253001

PO 00000

kg 3.00
3.10
3.20
3.30
3.40
3.45
3.55
3.65

Frm 00078

Large load
Fmt 4701

lb 1.36
1.41
1.45
1.50
1.54
1.56
1.61
1.66

Sfmt 4702

E:FRFM01SEP3.SGM

kg 3.00
3.35
3.70
4.00
4.30
4.60
4.95
5.25

01SEP3

1.36
1.52
1.68
1.81
1.95
2.09
2.25
2.38