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(continued)
3.50-3.60............................. 99.1-101.9 14.60 6.62
3.60-3.70............................. 101.9-104.8 15.00 6.80
3.70-3.80............................. 104.8-107.6 15.40 6.99
------------------------------------------------------------------------
Notes: (1) All test load weights are bone dry weights.
(2) Allowable tolerance on the test load weights are ±0.10 lbs
(0.05 kg).
3.3.3 For clothes washers with cold rinse only.
3.3.3.1 Record the actual bone dry weight of the test load (WI), then place the test load in the clothes washer.
3.3.3.2 Set water level selector to maximum fill.
3.3.3.3 Run the normal cycle.
3.3.3.4 Record the weight of the test load immediately after completion of the normal cycle (WC).
3.3.3.5 Calculate the remaining moisture content of the test load, RMC, expressed as a percentage and defined as:
RMC=[(WC-WI)/WI]×100%
3.3.4 For clothes washers with cold and warm rinse options.
3.3.4.1 Complete steps 3.3.3.1 through 3.3.3.4 for the cold rinse. Calculate the remaining moisture content of the test load for cold rinse, RMCCOLD, expressed as a percentage and defined as:
RMCCOLD=[(WC-WI)/WI]×100%
3.3.4.2 Complete steps 3.3.3.1 through 3.3.3.4 for the warm rinse. Calculate the remaining moisture content of the test load for warm rinse, RMCWARM, expressed as a percentage and defined as:
RMCWARM=[(WC-WI)/WI]×100%
3.3.4.3 Calculate the remaining moisture content of the test load, RMC, expressed as a percentage and defined as:
RMC=0.73×RMCCOLD+0.27×RMCWARM
3.3.5 Clothes washers which have options that result in different RMC values, such as multiple selection of spin speeds or spin times that are available in the normal cycle, shall be tested at the maximum and minimum settings of the available options, excluding any “no spin” (zero spin speed) settings, in accordance with requirements in 3.3.3 or 3.3.4. The calculated RMCmax extraction and RMCmin extraction at the maximum and minimum settings, respectively, shall be combined as follows and the final RMC to be used in section 4.2 shall be:
RMC=0.75×RMCmax extraction+0.25×RMCmin extraction
3.4 Data recording. Record for each test cycle in sections 3.2.1 through 3.3.5.
3.4.1 For non-water-heating clothes washers, record the kilowatt-hours of electrical energy, ME, consumed during the test to operate the clothes washer in section 3.2.3.1.2. For water-heating clothes washers record the kilowatt-hours of electrical energy, Ehi consumed at maximum fill in sections 3.2.3.1.2 and 3.2.3.1.6, and Ehj consumed at minimum fill in section 3.2.3.2.
3.4.2 Record the individual gallons (or liters) of hot and cold water consumption, Vhi and Vci, measured at maximum fill level for each wash/rinse temperature combination setting tested in section 3.2.3, or in both 3.2.3 and 3.2.4, excluding any fresh make-up water required to complete the fill during a suds-return cycle.
3.4.3 Record the individual gallons (or liters) of hot and cold water consumption, Vhj and Vcj, measured at minimum fill level for each wash/rinse temperature combination setting tested in section 3.2.3, or in both 3.2.3 and 3.2.4, excluding any fresh make-up water required to complete the fill during a suds-return cycle.
3.4.4 Record the individual gallons (or liters) of hot and cold water, ShH and ScH, measured at maximum fill for the suds-return cycle.
3.4.5 Record the individual gallons (or liters) of hot and cold water, ShL and ScL, measured at minimum fill for the suds-return cycle.
3.4.6 Data recording requirements for RMC tests are listed in sections 3.3.3 through 3.3.5.
4. Calculation of Derived Results From Test Measurements
4.1 Energy consumption.
4.1.1 Per-cycle temperature-weighted hot water consumption for maximum and minimum water fill levels. Calculate for the cycle under test the per-cycle temperature weighted hot water consumption for the maximum water fill level, Vhmax, and for the minimum water fill level, Vhmin, expressed in gallons per cycle (or liters per cycle) and defined as:
where:
Vhi=reported hot water consumption in gallons per cycle (or liters per cycle) at maximum fill for each wash/rinse temperature combination setting, as provided in section 3.4.2. If a clothes washer is equipped with two or more different wash/rinse temperature selections that have the same basic temperature combination selection label (for example, one of them has its water temperature controlled by thermostatically controlled valves and the other one does not), then the largest Vhi shall be used for this calculation. If a clothes washer has lockout(s), there will be “Vhi's” for wash/rinse temperature combination settings available in the normal cycle and “Vhi's” for wash/rinse temperature combination settings in the most energy intensive cycle.
Vhj=reported hot water consumption in gallons per cycle (or liters per cycle) at minimum fill for each wash/rinse temperature combination setting, as provided in section 3.4.3. If a clothes washer is equipped with two or more different wash/rinse temperature selections that have the same basic temperature combination selection label (for example, one of them has its water temperature controlled by thermostatically controlled valves and the other one does not), then the largest Vhj shall be used for the calculation. If a clothes washer has lockouts, there will be “Vhj's” for wash/rinse temperature combination settings available in the normal cycle and “Vhj's” for wash/rinse temperature combination settings in the most energy intensive cycle.
L=lockout factor to be applied to the reported hot water consumption. For wash/rinse temperature combination settings that are not locked out in the normal cycle, L=1. For each wash/rinse temperature combination setting that is locked out in the normal cycle, L=0.32 in the normal cycle and L=0.68, in the most energy intensive cycle.
TUFi=applicable temperature use factor in section 5 or 6.
TUFj=applicable temperature use factor in section 5 or 6.
n=number of wash/rinse temperature combination settings available to the user for the clothes washer under test. For clothes washers that lockout temperature selections in the normal cycle, n=the number of wash/rinse temperature combination settings on the washers plus the number of wash/rinse temperature combination settings that lockout the temperature selections in the normal cycle.
TUFw=temperature use factor for warm wash setting.
For clothes washers equipped with the suds-saver feature:
X1=frequency of use without the suds-saver feature=0.86.
X2=frequency of use with the suds-saver feature=0.14.
ShH=fresh make-up water measured during suds-return cycle at maximum water fill level.
ShL=fresh hot make-up water measured during suds-return cycle at minimum water fill level.
For clothes washers not equipped with the suds-saver feature:
X1=1.0
X2=0.0
4.1.2 Total per-cycle hot water energy consumption for maximum and minimum water fill levels. Calculate the total per-cycle hot water energy consumption for the maximum water fill level, Emax and for the minimum water fill level, Emin, expressed in kilowatt-hours per cycle and defined as:
Emax=[Vhmax×T×K×MF]
Emin=[Vhmin×T×K×MF]
where:
T=temperature rise=90 °F (50 °C).
K=water specific heat=0.00240 kWh/(gal– °F) [0.00114kWh/(L– °C)].
Vhmax=as defined in section 4.1.1.
Vhmin=as defined in section 4.1.1.
MF=multiplying factor to account for absence of test load=0.94 for top-loader vertical axis clothes washers that are sensor filled, 1.0 for all other clothes washers.
4.1.3 Total weighted per-cycle hot water energy consumption expressed in kilowatt-hours. Calculate the total weighted per cycle hot water energy consumption, ET, expressed in kilowatt-hours per cycle and defined as:
ET=[Emax×Fmax]+[Emin×Fmin]
where:
Fmax=usage fill factor=0.72.
Fmin=usage fill factor=0.28.
Emax=as defined in section 4.1.2.
Emin=as defined in section 4.1.2.
4.1.4 Per-cycle water energy consumption using gas-heated or oil-heated water. Calculate for the normal cycle the per-cycle energy consumption, ETG, using gas-heated or oil-heated water, expressed in Btu per cycle (or megajoules per cycle) and defined as:
where:
e=nominal gas or oil water heater efficiency=0.75.
ET=as defined in section 4.1.3.
4.1.5 Per-cycle machine electrical energy consumption.
4.1.5.1 Non-water-heating clothes washers. The electrical energy value recorded for the maximum fill in section 3.4.1 is the per-cycle machine electrical energy consumption, ME, expressed in kilowatt-hours per cycle.
4.1.5.2 Water-heating clothes washers.
4.1.5.2.1 Calculate for the cycle under test the per-cycle temperature weighted electrical energy consumption for the maximum water fill level, Ehmax, and for the minimum water fill level, Ehmin, expressed in kilowatt-hours per cycle and defined as:
where:
Ehi=reported electrical energy consumption in kilowatt-hours per cycle at maximum fill for each wash/cycle temperature combination setting, as provided in section 3.4.1.
TUFi=applicable temperature use factor in section 5 or 6.
n=number of wash/rinse temperature combination settings available to the user for the clothes washer under test.
and
where:
Ehj=reported electrical energy consumption in kilowatt-hours per cycle at minimum fill for each wash/rinse temperature combination setting, as provided in section 3.4.1.
TUFj=applicable temperature use factor in section 5 or 6.
n=as defined above in this section.
4.1.5.2.2 Weighted per-cycle machine electrical energy consumption. Calculate the weighted per cycle machine energy consumption, ME, expressed in kilowatt-hours per cycle and defined as:
ME=[Ehmax×Fmax]+[Ehmin×Fmin]
where:
Fmax=as defined in section 4.1.3.
Fmin=as defined in section 4.1.3.
Ehmax=as defined in section 4.1.5.2.1.
Ehmin=as defined in section 4.1.5.2.1
4.1.6 Total per-cycle energy consumption when electrically heated water is used. Calculate for the normal cycle the total per-cycle energy consumption, ETE, using electrically heated water, expressed in kilowatt-hours per cycle and defined as:
ETE=ET+ME
where:
ET=as defined in section 4.1.3.
ME=as defined in section 4.1.5.1 or 4.1.5.2.2.
4.2 Per-cycle energy consumption for removal of RMC. Calculate the amount of energy per cycle required to remove RMC. Such amount is DE, expressed in kilowatt-hours per cycle and defined as:
DE=(LAF)×(test load weight)×(RMC-4%)×(DEF)×(DUF)
where:
LAF=load adjustment factor=0.52.
Test load weight=as shown in test load table in 3.3.2 expressed in lbs/cycle.
RMC=as defined in 3.3.3.5, 3.3.4.3, or 3.3.5.
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=0.84.
4.3 Water consumption.
4.3.1 Per-cycle temperature-weighted water consumption for maximum and minimum water fill levels. To determine these amounts, calculate for the cycle under test the per-cycle temperature-weighted total water consumption for the maximum water fill level, Qmax, and for the minimum water fill level, Qmin, expressed in gallons per cycle (or liters per cycle) and defined as:
where:
Vhi=hot water consumption in gallons per-cycle at maximum fill for each wash/rinse temperature combination setting, as provided in section 3.4.2.
Vci=total cold water consumption in gallons per-cycle at maximum fill for each wash/rinse temperature combination setting, cold wash/cold rinse cycle, as provided in section 3.4.2.
TUFi=applicable temperature use factor in section 5 or 6.
n=number of wash/rinse temperature combination settings available to the user for the clothes washer under test.
TUFw=temperature use factor for warm wash setting.
For clothes washers equipped with suds-saver feature:
X1=frequency of use without suds-saver feature=0.86
X2=frequency of use with suds-saver feature=0.14
ShH=fresh hot water make-up measured during suds-return cycle at maximum water fill level.
ScH=fresh cold water make-up measured during suds-return cycle at maximum water fill level.
For clothes washers not equipped with suds-saver feature:
X1=1.0
X2=0.0
and
where:
Vhj=hot water consumption in gallons per cycle (or liters per cycle) at minimum fill for each wash/rinse temperature combination setting, as provided in section 3.4.3.
Vcj=cold water consumption in gallons per cycle (or liters per cycle) at minimum fill for each wash/rinse temperature combination setting, cold wash/cold rinse cycle, as provided in section 3.4.3.
TUFj=applicable temperature use factor in section 5 or 6.
ShL=fresh hot make-up water measured during suds-return cycle at minimum water fill level.
ScL=fresh cold make-up water measured during suds-return cycle at minimum water fill level.
n=as defined above in this section.
TUFw=as defined above in this section.
X1=as defined above in this section.
X2=as defined above in this section.
4.3.2 Total weighted per-cycle water consumption. To determine this amount, calculate the total weighted per cycle water consumption, QT, expressed in gallons per cycle (or liters per cycle) and defined as:
QT=[Qmax×Fmax]+[Qmin×Fmin]
where:
Fmax=as defined in section 4.1.3.
Fmin=as defined in section 4.1.3.
Qmax=as defined in section 4.3.1.
Qmin=as defined in section 4.3.1.
4.3.3 Water consumption factor. The following calculates the water consumption factor, WCF, expressed in gallon per cycle per cubic foot (or liter per cycle per liter):
WCF=QT/C
where:
C=as defined in section 3.1.5.
QT=as defined in section 4.3.2.
4.4 Modified energy factor. The following calculates the modified energy factor, MEF, expressed in cubic feet per kilowatt-hours per cycle (or liters per kilowatt-hours per cycle):
where:
C=as defined in section 3.1.5.
ME=as defined in section 4.1.5.1 or 4.1.5.2.2.
ET=as defined in section 4.1.3.
DE=as defined in section 4.2.
4.5 Energy factor. Calculate the energy factor, EF, expressed in cubic feet per kilowatt-hours per cycle (or liters per kilowatt-hours per cycle), as:
where:
C=as defined in section 3.1.5.
ME=as defined in section 4.1.5.1 or 4.1.5.2.2.
ET=as defined in section 4.1.3.
5. Applicable Temperature Use Factors for Determining Hot Water Usage for Various Wash/Rinse Temperature Selections for All Automatic Clothes Washers
5.1 Clothes washers with discrete temperature selections.
5.1.1 Five-temperature selection (n=5).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Hot/Warm................................................ 0.18
Hot/Cold................................................ .12
Warm/Warm............................................... .30
Warm/Cold............................................... .25
Cold/Cold............................................... .15
------------------------------------------------------------------------
5.1.2 Four-temperature selection (n=4).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Alternate I:
Hot/Warm.............................................. 0.18
Hot/Cold.............................................. .12
Warm/Cold............................................. .55
Cold/Cold............................................. .15
Alternate II:
Hot/Warm.............................................. 0.18
Hot/Cold.............................................. .12
Warm/Warm............................................. .30
Warm/Cold............................................. .40
Alternate III:
Hot/Cold.............................................. 0.12
Warm/Warm............................................. .18
Warm/Cold............................................. .55
Cold/Cold............................................. .15
------------------------------------------------------------------------
5.1.3 Three-temperature selection (n=3).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Alternate I:
Hot/Warm.............................................. 0.30
Warm/Cold............................................. .55
Cold/Cold............................................. .15
Alternate II:
Hot/Cold.............................................. 0.30
Warm/Cold............................................. .55
Cold/Cold............................................. .15
Alternate III:
Hot/Cold.............................................. 0.30
Warm/Warm............................................. .55
Cold/Cold............................................. .15
------------------------------------------------------------------------
5.1.4 Two-temperature selection (n=2).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Any heated water/Cold................................... 0.85
Cold/Cold............................................... .15
------------------------------------------------------------------------
5.1.5 One-temperature selection (n=1).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Any..................................................... 1.00
------------------------------------------------------------------------
5.2 Clothes washers with infinite temperature selections.
------------------------------------------------------------------------
Temperature Use
Factor (TUF)
---------------------
[le] 140 > 140
Wash/rinse tempera- ture setting °F °F
(60 (60
°C) °C)
(n=3) (n=4)
------------------------------------------------------------------------
Extra-hot......................................... ......... 0.05
Hot............................................... 0.30 0.25
Warm.............................................. 0.55 0.55
Cold.............................................. 0.15 0.15
------------------------------------------------------------------------
6. Applicable Temperature Use Factors for Determining Hot Water Usage for Various Wash/Rinse Temperature Settings for All Semi-Automatic, Non-Water-Heating, Clothes Washers
6.1 Six-temperature settings (n=6).
------------------------------------------------------------------------
Temperature
Wash/rinse temperature setting Use Factor
(TUF)
------------------------------------------------------------------------
Hot/Hot................................................. 0.15
Hot/Warm................................................ .09
Hot/Cold................................................ .06
Warm/Warm............................................... .42
Warm/Cold............................................... .13
Cold/Cold............................................... .15
------------------------------------------------------------------------
7. Waivers and Field Testing
7.1 Waivers and Field Testing for Non-conventional Clothes Washers. Manufacturers of non-conventional clothes washers, such as clothes washers with adaptive control systems, must submit a petition for waiver pursuant to 10 CFR 430.27 to establish an acceptable test procedure for that clothes washer. For these and other clothes washers that have controls or systems such that the DOE test procedures yield results that are so unrepresentative of the clothes washer's true energy consumption characteristics as to provide materially inaccurate comparative data, field testing may be appropriate for establishing an acceptable test procedure. The following are guidelines for field testing which may be used by manufacturers in support of petitions for waiver. These guidelines are not mandatory and the Department may determine that they do not apply to a particular model. Depending upon a manufacturer's approach for conducting field testing, additional data may be required. Manufacturers are encouraged to communicate with the Department prior to the commencement of field tests which may be used to support a petition for waiver. Section 7.3 provides an example of field testing for a clothes washer with an adaptive water fill control system. Other features, such as the use of various spin speed selections, could be the subject of field tests.
7.2 Non-conventional Wash System Energy Consumption Test. The field test may consist of a minimum of 10 of the nonconventional clothes washers (“test clothes washers”) and 10 clothes washers already being distributed in commerce (“base clothes washers”). The tests should include a minimum of 50 normal test cycles per clothes washer. The test clothes washers and base clothes washers should be identical in construction except for the controls or systems being tested. Equal numbers of both the test clothes washer and the base clothes washer should be tested simultaneously in comparable settings to minimize seasonal and/or consumer laundering conditions and/or variations. The clothes washers should be monitored in such a way as to accurately record the total energy consumption per cycle. At a minimum, the following should be measured and recorded throughout the test period for each clothes washer: Hot water usage in gallons (or liters), electrical energy usage in kilowatt-hours, and the cycles of usage. The field test results would be used to determine the best method to correlate the rating of the test clothes washer to the rating of the base clothes washer. If the base clothes washer is rated at A kWh per year, but field tests at B kWh per year, and the test clothes washer field tests at D kWh per year, the test unit would be rated as follows:
A×(D/B)=G kWh per year
7.3 Adaptive water fill control system field test. Section 3.2.2.1 defines the test method for measuring energy consumption for clothes washers which incorporate control systems having both adaptive and alternate manual selections. Energy consumption calculated by the method defined in section 3.2.2.1 assumes the adaptive cycle will be used 50 percent of the time. This section can be used to develop field test data in support of a petition for waiver when it is believed that the adaptive cycle will be used more than 50 percent of the time. The field test sample size should be a minimum of 10 test clothes washers. The test clothes washers should be totally representative of the design, construction, and control system that will be placed in commerce. The duration of field testing in the user's house should be a minimum of 50 normal test cycles, for each unit. No special instructions as to cycle selection or product usage should be given to the field test participants, other than inclusion of the product literature pack which should be shipped with all units, and instructions regarding filling out data collection forms, use of data collection equipment, or basic procedural methods. Prior to the test clothes washers being installed in the field test locations, baseline data should be developed for all field test units by conducting laboratory tests as defined by section 1 through section 6 of these test procedures to determine the energy consumption values. The following data should be measured and recorded for each wash load during the test period: wash cycle selected, the mode of the clothes washer (adaptive or manual), clothes load dry weight (measured after the clothes washer and clothes dryer cycles are completed) in pounds, and type of articles in the clothes load (i.e., cottons, linens, permanent press, etc.). The wash loads used in calculating the in-home percentage split between adaptive and manual cycle usage should be only those wash loads which conform to the definition of the normal test cycle.
Calculate:
T=The total number of normal test cycles run during the field test
Ta=The total number of adaptive control normal test cycles
Tm=The total number of manual control normal test cycles
The percentage weighting factors:
Pa=(Ta/T) × 100 (the percentage weighting for adaptive control selection)
Pm=(Tm/T) × 100 (the percentage weighting for manual control selection)
Energy consumption values, ET, ME, and DE (if desired) calculated in section 4 for the manual and adaptive modes, should be combined using Pa and Pm as the weighting factors.
8. Sunset
The provisions of this appendix J expire on December 31, 2003.
[62 FR 45501, Aug. 27, 1997, as amended at 66 FR 3330, Jan. 12, 2001; 66 FR 8745, Feb. 2, 2001]
Appendix J1 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
top
The provisions of this appendix J1 shall apply to products manufactured beginning January 1, 2004.
1. Definitions and Symbols
1.1 Adaptive control system means a clothes washer control system, other than an adaptive water fill control system, which is capable of automatically adjusting washer operation or washing conditions based on characteristics of the clothes load placed in the clothes container, without allowing or requiring consumer intervention or actions. The automatic adjustments may, for example, include automatic selection, modification, or control of any of the following: wash water temperature, agitation or tumble cycle time, number of rinse cycles, and spin speed. The characteristics of the clothes load, which could trigger such adjustments, could, for example, consist of or be indicated by the presence of either soil, soap, suds, or any other additive laundering substitute or complementary product.
Note: Appendix J1 does not provide a means for determining the energy consumption of a clothes washer with an adaptive control system. Therefore, pursuant to 10 CFR 430.27, a waiver must be obtained to establish an acceptable test procedure for each such clothes washer.
1.2 Adaptive water fill control system means a clothes washer water fill control system which is capable of automatically adjusting the water fill level based on the size or weight of the clothes load placed in the clothes container, without allowing or requiring consumer intervention or actions.
1.3 Bone-dry means a condition of a load of test cloth which has been dried in a dryer at maximum temperature for a minimum of 10 minutes, removed and weighed before cool down, and then dried again for 10 minute periods until the final weight change of the load is 1 percent or less.
1.4 Clothes container means the compartment within the clothes washer that holds the clothes during the operation of the machine.
1.5 Compact means a clothes washer which has a clothes container capacity of less than 1.6 ft 3 (45 L).
1.6 Deep rinse cycle means a rinse cycle in which the clothes container is filled with water to a selected level and the clothes load is rinsed by agitating it or tumbling it through the water.
1.7 Energy test cycle for a basic model means (A) the cycle recommended by the manufacturer for washing cotton or linen clothes, and includes all wash/rinse temperature selections and water levels offered in that cycle, and (B) for each other wash/rinse temperature selection or water level available on that basic model, the portion(s) of other cycle(s) with that temperature selection or water level that, when tested pursuant to these test procedures, will contribute to an accurate representation of the energy consumption of the basic model as used by consumers. Any cycle under (A) or (B) shall include the agitation/tumble operation, spin speed(s), wash times, and rinse times applicable to that cycle, including water heating time for water heating clothes washers.
1.8 Load use factor means the percentage of the total number of wash loads that a user would wash a particular size (weight) load.
1.9 Manual control system means a clothes washer control system which requires that the consumer make the choices that determine washer operation or washing conditions, such as, for example, wash/rinse temperature selections, and wash time before starting the cycle.
1.10 Manual water fill control system means a clothes washer water fill control system which requires the consumer to determine or select the water fill level.
1.11 Modified energy factor means the quotient of the cubic foot (or liter) capacity of the clothes container divided by the total clothes washer energy consumption per cycle, with such energy consumption expressed as the sum of the machine electrical energy consumption, the hot water energy consumption, and the energy required for removal of the remaining moisture in the wash load.
1.12 Non-water-heating clothes washer means a clothes washer which does not have an internal water heating device to generate hot water.
1.13 Spray rinse cycle means a rinse cycle in which water is sprayed onto the clothes for a period of time without maintaining any specific water level in the clothes container.
1.14 Standard means a clothes washer which has a clothes container capacity of 1.6 ft 3 (45 L) or greater.
1.15 Temperature use factor means, for a particular wash/rinse temperature setting, the percentage of the total number of wash loads that an average user would wash with that setting.
1.16 Thermostatically controlled water valves means clothes washer controls that have the ability to sense and adjust the hot and cold supply water.
1.17 Uniformly distributed warm wash temperature selection(s) means (A) multiple warm wash selections for which the warm wash water temperatures have a linear relationship with all discrete warm wash selections when the water temperatures are plotted against equally spaced consecutive warm wash selections between the hottest warm wash and the coldest warm wash. If the warm wash has infinite selections, the warm wash water temperature has a linear relationship with the distance on the selection device (e.g. dial angle or slide movement) between the hottest warm wash and the coldest warm wash. The criteria for a linear relationship as specified above is that the difference between the actual water temperature at any warm wash selection and the point where that temperature is depicted on the temperature/selection line formed by connecting the warmest and the coldest warm selections is less than ±5 percent. In all cases, the mean water temperature of the warmest and the coldest warm selections must coincide with the mean of the “hot wash” (maximum wash temperature =135 °F (57.2 °C)) and “cold wash” (minimum wash temperature) water temperatures within ±3.8 °F (±2.1 °C); or (B) on a clothes washer with only one warm wash temperature selection, a warm wash temperature selection with a water temperature that coincides with the mean of the “hot wash” (maximum wash temperature =135 °F (57.2 °C)) and “cold wash” (minimum wash temperature) water temperatures within ±3.8 °F (±2.1 °C).
1.18 Warm wash means all wash temperature selections that are below the hottest hot, less than 135 °F (57.2 °C), and above the coldest cold temperature selection.
1.19 Water consumption factor means the quotient of the total weighted per-cycle water consumption divided by the cubic foot (or liter) capacity of the clothes washer.
1.20 Water-heating clothes washer means a clothes washer where some or all of the hot water for clothes washing is generated by a water heating device internal to the clothes washer.
1.21 Symbol usage. The following identity relationships are provided to help clarify the symbology used throughout this procedure.
E—Electrical Energy Consumption
H—Hot Water Consumption
C—Cold Water Consumption
R—Hot Water Consumed by Warm Rinse
ER—Electrical Energy Consumed by Warm Rinse
TUF—Temperature Use Factor
HE—Hot Water Energy Consumption
F—Load Usage Factor
Q—Total Water Consumption
ME—Machine Electrical Energy Consumption
RMC—Remaining Moisture Content
WI—Initial Weight of Dry Test Load
WC—Weight of Test Load After Extraction
m—Extra Hot Wash (maximum wash temp. >135 °F (57.2 °C.))
h—Hot Wash (maximum wash temp. =135 °F (57.2 °C.))
w—Warm Wash
c—Cold Wash (minimum wash temp.)
r—Warm Rinse (hottest rinse temp.)
x or max—Maximum Test Load
a or avg—Average Test Load
n or min—Minimum Test Load
The following examples are provided to show how the above symbols can be used to define variables:
Emx=“Electrical Energy Consumption” for an “Extra Hot Wash” and “Maximum Test Load”
Ra=“Hot Water Consumed by Warm Rinse” for the “Average Test Load”
TUFm=“Temperature Use Factor” for an “Extra Hot Wash”
HEmin=“Hot Water Energy Consumption” for the “Minimum Test Load”
1.22 Cold rinse means the coldest rinse temperature available on the machine (and should be the same rinse temperature selection tested in 3.7 of this appendix).
1.23 Warm rinse means the hottest rinse temperature available on the machine (and should be the same rinse temperature selection tested in 3.7 of this appendix).
2. Testing Conditions
2.1 Installation. Install the clothes washer in accordance with manufacturer's instructions.
2.2 Electrical energy supply. Maintain the electrical supply at the clothes washer terminal block within 2 percent of 120, 120/240, or 120/208Y volts as applicable to the particular terminal block wiring system and within 2 percent of the nameplate frequency as specified by the manufacturer. If the clothes washer has a dual voltage conversion capability, conduct test at the highest voltage specified by the manufacturer.
2.3 Supply Water.
2.3.1 Clothes washers in which electrical energy consumption or water energy consumption are affected by the inlet water temperature. (For example, water heating clothes washers or clothes washers with thermostatically controlled water valves.). The temperature of the hot water supply at the water inlets shall not exceed 135 °F (57.2 °C) and the cold water supply at the water inlets shall not exceed 60 °F (15.6 °C). A water meter shall be installed in both the hot and cold water lines to measure water consumption.
2.3.2 Clothes washers in which electrical energy consumption and water energy consumption are not affected by the inlet water temperature. The temperature of the hot water supply shall be maintained at 135 °F±5 °F (57.2 °C±2.8 °C) and the cold water supply shall be maintained at 60 °F±5 °F (15.6 °C±2.8 °C). A water meter shall be installed in both the hot and cold water lines to measure water consumption.
2.4 Water pressure. The static water pressure at the hot and cold water inlet connection of the clothes washer shall be maintained at 35 pounds per square inch gauge (psig) ±2.5 psig (241.3 kPa±17.2 kPa) during the test. The static water pressure for a single water inlet connection shall be maintained at 35 psig±2.5 psig (241.3 kPa±17.2 kPa) during the test. A water pressure gauge shall be installed in both the hot and cold water lines to measure water pressure.
2.5 Instrumentation. Perform all test measurements using the following instruments, as appropriate:
2.5.1 Weighing scales.
2.5.1.1 Weighing scale for test cloth. The scale shall have a resolution of no larger than 0.2 oz (5.7 g) and a maximum error no greater than 0.3 percent of the measured value.
2.5.1.2 Weighing scale for clothes container capacity measurements. The scale should have a resolution no larger than 0.50 lbs (0.23 kg) and a maximum error no greater than 0.5 percent of the measured value.
2.5.2 Watt-hour meter. The watt-hour meter shall have a resolution no larger than 1 Wh (3.6 kJ) and a maximum error no greater than 2 percent of the measured value for any demand greater than 50 Wh (180.0 kJ).
2.5.3 Temperature measuring device. The device shall have an error no greater than ±1 °F (±0.6 °C) over the range being measured.
2.5.4 Water meter. The water meter shall have a resolution no larger than 0.1 gallons (0.4 liters) and a maximum error no greater than 2 percent for the water flow rates being measured.
2.5.5 Water pressure gauge. The water pressure gauge shall have a resolution of 1 pound per square inch gauge (psig) (6.9 kPa) and shall have an error no greater than 5 percent of any measured value.
2.6 Test cloths.
2.6.1 Energy Test Cloth. The energy test cloth shall be made from energy test cloth material, as specified in 2.6.4, that is 24 inches by 36 inches (61.0 cm by 91.4 cm) and has been hemmed to 22 inches by 34 inches (55.9 cm by 86.4 cm) before washing. The energy test cloth shall be clean and shall not be used for more than 60 test runs (after preconditioning as specified in 2.6.3 of this appendix). All energy test cloth must be permanently marked identifying the lot number of the material. Mixed lots of material shall not be used for testing the clothes washers.
2.6.1.1 The energy test cloth shall not be used for more than 25 test runs and shall be clean and consist of the following:
(A) Pure finished bleached cloth, made with a momie or granite weave, which is 50 percent cotton and 50 percent polyester and weighs 5.75 ounces per square yard (195.0 g/m 2 ) and has 65 ends on the warp and 57 picks on the fill; and
(B) Cloth material that is 24 inches by 36 inches (61.0 cm by 91.4 cm) and has been hemmed to 22 inches by 34 inches (55.9 cm by 86.4 cm) before washing. The maximum shrinkage after five washes shall not be more than four percent on the length and width.
2.6.1.2 The new test cloths, including energy test cloths and energy stuffer cloths, shall be pre-conditioned in a clothes washer in the following manner:
2.6.1.2.1 Wash the test cloth using a commercially available clothes washing detergent that is suitable for 135 °F (57.2 °C) wash water as recommended by the manufacturer, with the washer set on maximum water level. Place detergent in washer and then place the new load to be conditioned in the washer. Wash the load for ten minutes in soft water (17ppm or less). Wash water is to be hot, and controlled at 135 °F±5 °F (57.2 °C ±2.8 °C). Rinse water temperature is to be cold, and controlled at 60 °F ±5 °F (15.6 °C ±2.8 °C). Rinse the load through a second rinse using the same water temperature (if an optional second rinse is available on the clothes washer, use it).
2.6.1.2.2 Dry the load.
2.6.1.2.3 A final cycle is to be hot water wash with no detergent followed by two cold water rinses.
2.6.1.2.4 Dry the load.
2.6.2 Energy Stuffer Cloth. The energy stuffer cloth shall be made from energy test cloth material, as specified in 2.6.4, and shall consist of pieces of material that are 12 inches by 12 inches (30.5 cm by 30.5 cm) and have been hemmed to 10 inches by 10 inches (25.4 cm by 25.4 cm) before washing. The energy stuffer cloth shall be clean and shall not be used for more than 60 test runs (after preconditioning as specified in 2.6.3 of this appendix). All energy stuffer cloth must be permanently marked identifying the lot number of the material. Mixed lots of material shall not be used for testing the clothes washers.
2.6.3 Preconditioning of Test Cloths. The new test cloths, including energy test cloths and energy stuffer cloths, shall be pre-conditioned in a clothes washer in the following manner:
2.6.3.1 Perform 5 complete normal wash-rinse-spin cycles, the first two with AHAM Standard detergent 2A and the last three without detergent. Place the test cloth in a clothes washer set at the maximum water level. Wash the load for ten minutes in soft water (17 ppm hardness or less) using 6.0 grams per gallon of water of AHAM Standard detergent 2A. The wash temperature is to be controlled to 135 °F ±5 °F (57.2 °C ±2.8 °C) and the rinse temperature is to be controlled to 60 °F ±5 °F (15.6 °C ±2.8 °C). Repeat the cycle with detergent and then repeat the cycle three additional times without detergent, bone drying the load between cycles (total of five wash and rinse cycles).
2.6.4 Energy test cloth material. The energy test cloths and energy stuffer cloths shall be made from fabric meeting the following specifications. The material should come from a roll of material with a width of approximately 63 inches and approximately 500 yards per roll, however, other sizes maybe used if they fall within the specifications.
2.6.4.1 Nominal fabric type. Pure finished bleached cloth, made with a momie or granite weave, which is nominally 50 percent cotton and 50 percent polyester.
2.6.4.2 The fabric weight shall be 5.60 ounces per square yard (190.0 g/m 2 ), ±5 percent.
2.6.4.3 The thread count shall be 61 × 54 per inch (warp × fill), ±2 percent.
2.6.4.4 The warp yarn and filling yarn shall each have fiber content of 50 percent ±4 percent cotton, with the balance being polyester, and be open end spun, 15/1 ±5 percent cotton count blended yarn.
2.6.4.5 Water repellent finishes, such as fluoropolymer stain resistant finishes shall not be applied to the test cloth. The absence of such finishes shall be verified by:
2.6.4.5.1 American Association of Textile Chemists and Colorists (AATCC) Test Method 118—1997, Oil Repellency: Hydrocarbon Resistance Test (reaffirmed 1997), of each new lot of test cloth (when purchased from the mill) to confirm the absence of Scotchguard TM or other water repellent finish (required scores of “D” across the board).
2.6.4.5.2 American Association of Textile Chemists and Colorists (AATCC) Test Method 79–2000, Absorbency of Bleached Textiles (reaffirmed 2000), of each new lot of test cloth (when purchased from the mill) to confirm the absence of Scotchguard TM or other water repellent finish (time to absorb one drop should be on the order of 1 second).
2.6.4.5.3 The standards listed in 2.6.4.5.1 and 2.6.4.5.2 of this appendix which are not otherwise set forth in this part 430 are incorporated by reference. The material listed in this paragraph has been approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR Part 51. Any subsequent amendment to a standard by the standard-setting organization will not affect the DOE test procedures unless and until amended by DOE. Material is incorporated as it exists on the date of the approval and notice of any change in the material will be published in the Federal Register. The standards incorporated by reference are the American Association of Textile Chemists and Colorists Test Method 118–1997, Oil Repellency: Hydrocarbon Resistance Test (reaffirmed 1997) and Test Method 79–2000, Absorbency of Bleached Textiles (reaffirmed 2000).
(a) The above standards incorporated by reference are available for inspection at:
(i) National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202–741–6030, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
(ii) U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Hearings and Dockets, “Energy Conservation Program for Consumer Products: Clothes Washer Energy Conservation Standards,” Docket No. EE—RM–94–403, Forrestal Building, 1000 Independence Avenue, SW, Washington, DC.
(b) Copies of the above standards incorporated by reference can be obtained from the American Association of Textile Chemists and Colorists, P.O. Box 1215, Research Triangle Park, NC 27709, telephone (919) 549–8141, telefax (919) 549–8933, or electronic mail: orders@aatcc.org.
2.6.4.6 The moisture absorption and retention shall be evaluated for each new lot of test cloth by the Standard Extractor Remaining Moisture Content (RMC) Test specified in 2.6.5 of this appendix.
2.6.4.6.1 Repeat the Standard Extractor RMC Test in 2.6.5 of this appendix three times.
2.6.4.6.2 An RMC correction curve shall be calculated as specified in 2.6.6 of this appendix.
2.6.5 Standard Extractor RMC Test Procedure. The following procedure is used to evaluate the moisture absorption and retention characteristics of a lot of test cloth by measuring the RMC in a standard extractor at a specified set of conditions. Table 2.6.5 of this appendix is the matrix of test conditions. The 500g requirement will only be used if a clothes washer design can achieve spin speeds in the 500g range. When this matrix is repeated 3 times, a total of 48 extractor RMC test runs are required. For the purpose of the extractor RMC test, the test cloths may be used for up to 60 test runs (after preconditioning as specified in 2.6.3 of this appendix).
Table 2.6.5_Matrix of Extractor RMC Test Conditions
------------------------------------------------------------------------
Warm soak Cold soak
-------------------------------
``g Force'' 15 15
min. 4 min. min. 4 min.
spin spin spin spin
------------------------------------------------------------------------
100..................................... ...... ...... ...... ......
200..................................... ...... ...... ...... ......
350..................................... ...... ...... ...... ......
500..................................... ...... ...... ...... ......
------------------------------------------------------------------------
2.6.5.1 The standard extractor RMC tests shall be run in a Bock Model 215 extractor (having a basket diameter of 19.5 inches, length of 12 inches, and volume of 2.1 ft 3 ), with a variable speed drive (Bock Engineered Products, P.O. Box 5127, Toledo, OH 43611) or an equivalent extractor with same basket design (i.e. diameter, length, volume, and hole configuration) and variable speed drive.
2.6.5.2 Test Load. Test cloths shall be preconditioned in accordance with 2.6.3 of this appendix. The load size shall be 8.4 lbs., consistent with 3.8.1 of this appendix.
2.6.5.3 Procedure.
2.6.5.3.1 Record the “bone-dry” weight of the test load (WI).
2.6.5.3.2 Soak the test load for 20 minutes in 10 gallons of soft (<17 ppm) water. The entire test load shall be submerged. The water temperature shall be 100 °F ±5 °F.
2.6.5.3.3 Remove the test load and allow water to gravity drain off of the test cloths. Then manually place the test cloths in the basket of the extractor, distributing them evenly by eye. Spin the load at a fixed speed corresponding to the intended centripetal acceleration level (measured in units of the acceleration of gravity, g) ±1 g for the intended time period ±5 seconds.
2.6.5.3.4 Record the weight of the test load immediately after the completion of the extractor spin cycle (WC).
2.6.5.3.5 Calculate the RMC as (WC-WI)/WI.
2.6.5.3.6 The RMC of the test load shall be measured at three (3) g levels: 100g; 200g; and 350g, using two different spin times at each g level: 4 minutes; and 15 minutes. If a clothes washer design can achieve spin speeds in the 500g range then the RMC of the test load shall be measured at four (4) g levels: 100g; 200g; 350g; and 500g, using two different spin times at each g level: 4 minutes; and 15 minutes.
2.6.5.4 Repeat 2.6.5.3 of this appendix using soft (<17 ppm) water at 60 °F ±5 °F.
2.6.6 Calculation of RMC correction curve.
2.6.6.1 Average the values of 3 test runs and fill in table 2.6.5 of this appendix. Perform a linear least-squares fitto relate the standard RMC (RMCstandard) values (shown in table 2.6.6.1 of this appendix) to the values measured in 2.6.5 of this appendix: (continued)