10 C.F.R. Appendix J1 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
Title 10 - Energy
Title 10: Energy
PART 430—ENERGY CONSERVATION PROGRAM FOR CONSUMER PRODUCTS
Subpart B—Test Procedures
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Appendix J1 to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Automatic and Semi-Automatic Clothes Washers
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 ft3 (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 ft3 (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/m2 ) 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/m2 ), ±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 ScotchguardTM 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 ScotchguardTM 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.php.
(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: [email protected].
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..................................... ...... ...... ...... ......------------------------------------------------------------------------
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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 ft3 ), 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 fit to 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:
(RMCcloth): RMCstandard ∼ A * RMCcloth + B
Where A and B are coefficients of the linear least-squares fit.
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Table 2.6.6.1_Standard RMC Values (RMC Standard)---------------------------------------------------------------------------------------------------------------- RMC % --------------------------------------------------- Warm soak Cold soak ``g Force'' --------------------------------------------------- 15 min. 15 min. spin 4 min. spin spin 4 min. spin----------------------------------------------------------------------------------------------------------------100......................................................... 45.9 49.9 49.7 52.8200......................................................... 35.7 40.4 37.9 43.1350......................................................... 29.6 33.1 30.7 35.8500......................................................... 24.2 28.7 25.5 30.0----------------------------------------------------------------------------------------------------------------
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2.6.6.2. Perform an analysis of variance test using two factors, spin speed and lot, to check the interaction of speed and lot. Use the values from Table 2.6.5 and Table 2.6.6.1 in the calculation. The “P” value in the variance analysis shall be greater than or equal to 0.1. If the “P” value is less than 0.1 the test cloth is unacceptable. “P” is a theoretically based probability of interaction based on an analysis of variance.
2.6.7 Application of RMC correction curve.
2.6.7.1 Using the coefficients A and B calculated in 2.6.6.1 of this appendix:
RMCcorr = A * RMC + B
2.6.7.2 Substitute RMCcorr values in calculations in 3.8 of this appendix.
2.7 Test Load Sizes. Maximum, minimum, and, when required, average test load sizes shall be determined using Table 5.1 and the clothes container capacity as measured in 3.1.1 through 3.1.5. Test loads shall consist of energy test cloths, except that adjustments to the test loads to achieve proper weight can be made by the use of energy stuffer cloths with no more than 5 stuffer clothes per load.
2.8 Use of Test Loads. Table 2.8 defines the test load sizes and corresponding water fill settings which are to be used when measuring water and energy consumptions. Adaptive water fill control system and manual water fill control system are defined in section 1 of this appendix:
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Table 2.8_Test Load Sizes and Water Fill Settings Required------------------------------------------------------------------------ Manual water fill control system Adaptive water fill control system------------------------------------------------------------------------ Water fill Water fill Test load size setting Test load size setting------------------------------------------------------------------------Max Max Max As determined byMin Min Avg the Clothes Min Washer.------------------------------------------------------------------------
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2.8.1 The test load sizes to be used to measure RMC are specified in section 3.8.1.
2.8.2 Test loads for energy and water consumption measurements shall be bone dry prior to the first cycle of the test, and dried to a maximum of 104 percent of bone dry weight for subsequent testing.
2.8.3 Load the energy test cloths by grasping them in the center, shaking them to hang loosely and then put them into the clothes container prior to activating the clothes washer.
2.9 Pre-conditioning.
2.9.1 Nonwater-heating clothes washer. If the clothes washer has not been filled with water in the preceding 96 hours, pre-condition it by running it through a cold rinse cycle and then draining it to ensure that the hose, pump, and sump are filled with water.
2.9.2 Water-heating clothes washer. If the clothes washer has not been filled with water in the preceding 96 hours, or if it has not been in the test room at the specified ambient conditions for 8 hours, pre-condition it by running it through a cold rinse cycle and then draining it to ensure that the hose, pump, and sump are filled with water.
2.10 Wash time setting. If one wash time is prescribed in the energy test cycle, that shall be the wash time setting; otherwise, the wash time setting shall be the higher of either the minimum, or 70 percent of the maximum wash time available in the energy test cycle.
2.11 Test room temperature for water-heating clothes washers. Maintain the test room ambient air temperature at 75 °F±5 °F (23.9 °C±2.8 °C).
3. Test Measurements
3.1 Clothes container capacity. Measure the entire volume which a dry clothes load could occupy within the clothes container during washer operation according to the following procedures:
3.1.1 Place the clothes washer in such a position that the uppermost edge of the clothes container opening is leveled horizontally, so that the container will hold the maximum amount of water.
3.1.2 Line the inside of the clothes container with 2 mil (0.051 mm) plastic sheet. All clothes washer components which occupy space within the clothes container and which are recommended for use with the energy test cycle shall be in place and shall be lined with 2 mil (0.051 mm) plastic sheet to prevent water from entering any void space.
3.1.3 Record the total weight of the machine before adding water.
3.1.4 Fill the clothes container manually with either 60 °F±5 °F (15.6 °C±2.8 °C) or 100 °F±10 °F (37.8 °C±5.5 °C) water to its uppermost edge. Measure and record the weight of water, W, in pounds.
3.1.5 The clothes container capacity is calculated as follows:
C=W/d.
where:
C=Capacity in cubic feet (liters).
W=Mass of water in pounds (kilograms).
d=Density of water (62.0 lbs/ft3 for 100 °F (993 kg/m3 for 37.8 °C) or 62.3 lbs/ft3 for 60 °F (998 kg/m3 for 15.6 °C)).
3.2 Procedure for measuring water and energy consumption values on all automatic and semi-automatic washers. All energy consumption tests shall be performed under the energy test cycle(s), unless otherwise specified. Table 3.2 defines the sections below which govern tests of particular clothes washers, based on the number of wash/rinse temperature selections available on the model, and also, in some instances, method of water heating. The procedures prescribed are applicable regardless of a clothes washer's washing capacity, loading port location, primary axis of rotation of the clothes container, and type of control system.
3.2.1 Inlet water temperature and the wash/rinse temperature settings.
3.2.1.1 For automatic clothes washers set the wash/rinse temperature selection control to obtain the wash water temperature desired (extra hot, hot, warm, or cold) and cold rinse, and open both the hot and cold water faucets.
3.2.1.2 For semi-automatic washers: (1) For hot water temperature, open the hot water faucet completely and close the cold water faucet; (2) for warm inlet water temperature, open both hot and cold water faucets completely; (3) for cold water temperature, close the hot water faucet and open the cold water faucet completely.
3.2.1.3 Determination of warm wash water temperature(s) to decide whether a clothes washer has uniformly distributed warm wash temperature selections. The wash water temperature, Tw, of each warm water wash selection shall be calculated or measured.
For non-water-heating clothes washers, calculate Tw as follows:
Tw( °F)=((Hw×135 °F)+(Cw×60 °F))/(Hw+Cw)
or
Tw( °C)=((Hw×57.2 °C)+(Cw×15.6 °C))/(Hw+Cw)
where:
Hw=Hot water consumption of a warm wash
Cw=Cold water consumption of a warm wash
For water-heating clothes washers, measure and record the temperature of each warm wash selection after fill.
3.2.2 Total water consumption during the energy test cycle shall be measured, including hot and cold water consumption during wash, deep rinse, and spray rinse.
3.2.3 Clothes washers with adaptive water fill/manual water fill control systems
3.2.3.1 Clothes washers with adaptive water fill control system and alternate manual water fill control systems. If a clothes washer with an adaptive water fill control system allows consumer selection of manual controls as an alternative, then both manual and adaptive modes shall be tested and, for each mode, the energy consumption (HET, MET, and DE) and water consumption (QT), values shall be calculated as set forth in section 4. Then the average of the two values (one from each mode, adaptive and manual) for each variable shall be used in section 4 for the clothes washer.
3.2.3.2 Clothes washers with adaptive water fill control system.
3.2.3.2.1. Not user adjustable. The maximum, minimum, and average water levels as defined in the following sections shall be interpreted to mean that amount of water fill which is selected by the control system when the respective test loads are used, as defined in Table 2.8. The load usage factors which shall be used when calculating energy consumption values are defined in Table 4.1.3.
3.2.3.2.2 User adjustable. Four tests shall be conducted on clothes washers with user adjustable adaptive water fill controls which affect the relative wash water levels. The first test shall be conducted with the maximum test load and with the adaptive water fill control system set in the setting that will give the most energy intensive result. The second test shall be conducted with the minimum test load and with the adaptive water fill control system set in the setting that will give the least energy intensive result. The third test shall be conducted with the average test load and with the adaptive water fill control system set in the setting that will give the most energy intensive result for the given test load. The fourth test shall be conducted with the average test load and with the adaptive water fill control system set in the setting that will give the least energy intensive result for the given test load. The energy and water consumption for the average test load and water level, shall be the average of the third and fourth tests.
3.2.3.3 Clothes washers with manual water fill control system. In accordance with Table 2.8, the water fill selector shall be set to the maximum water level available on the clothes washer for the maximum test load size and set to the minimum water level for the minimum test load size. The load usage factors which shall be used when calculating energy consumption values are defined in Table 4.1.3.
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Table 3.2_Test Section Reference ----------------------------------------------------------------------------------------------------------------Max. Wash Temp. Available................................ [le]135 >135 °F °F (57.2 (57.2 °C) °C) \2\Number of Wash Temp. Selections.......................... 1 2 >2 3 >3Test Sections Required to be Followed.................... ......... ......... ......... 3.3 3.3 ......... 3.4 3.4 ......... 3.4 ......... ......... 3.5 3.5 3.5 3.6 3.6 3.6 3.6 3.6 \1\ 3.7 \1\ 3.7 \1\ 3.7 \1\ 3.7 \1\ 3.7 3.8 3.8 3.8 3.8 3.8----------------------------------------------------------------------------------------------------------------\1\ Only applicable to machines with warm rinse in any cycle.\2\ This only applies to water hearting clothes washers on which the maximum wash temperature available exceeds 135 °F (57.2 °C)
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3.3 “Extra Hot Wash” (Max Wash Temp >135 °F (57.2 °C)) for water heating clothes washers only. Water and electrical energy consumption shall be measured for each water fill level and/or test load size as specified in 3.3.1 through 3.3.3 for the hottest wash setting available.
3.3.1 Maximum test load and water fill. Hot water consumption (Hmx), cold water consumption (Cmx), and electrical energy consumption (Emx) shall be measured for an extra hot wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1.
3.3.2 Minimum test load and water fill. Hot water consumption (Hmn), cold water consumption (Cmn), and electrical energy consumption (Emn) shall be measured for an extra hot wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1.
3.3.3 Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hma), cold water consumption (Cma), and electrical energy consumption (Ema) for an extra hot wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1.
3.4 “Hot Wash” (Max Wash Temp≤135 °F (57.2 °C)). Water and electrical energy consumption shall be measured for each water fill level or test load size as specified in 3.4.1 through 3.4.3 for a 135 °F (57.2 °C)) wash, if available, or for the hottest selection less than 135 °F (57.2 °C)).
3.4.1 Maximum test load and water fill. Hot water consumption (Hhx), cold water consumption (Chx), and electrical energy consumption (Ehx) shall be measured for a hot wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1.
3.4.2 Minimum test load and water fill. Hot water consumption (Hhn), cold water consumption (Chn), and electrical energy consumption (Ehn) shall be measured for a hot wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1.
3.4.3 Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hha), cold water consumption (Cha), and electrical energy consumption (Eha) for a hot wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1.
3.5 “Warm Wash.” Water and electrical energy consumption shall be determined for each water fill level and/or test load size as specified in 3.5.1 through 3.5.2.3 for the applicable warm water wash temperature(s).
3.5.1 Clothes washers with uniformly distributed warm wash temperature selection(s). The reportable values to be used for the warm water wash setting shall be the arithmetic average of the measurements for the hot and cold wash selections. This is a calculation only, no testing is required.
3.5.2 Clothes washers that lack uniformly distributed warm wash temperature selections. For a clothes washer with fewer than four discrete warm wash selections, test all warm wash temperature selections. For a clothes washer that offers four or more warm wash selections, test at all discrete selections, or test at 25 percent, 50 percent, and 75 percent positions of the temperature selection device between the hottest hot (≤135 °F (57.2 °C)) wash and the coldest cold wash. If a selection is not available at the 25, 50 or 75 percent position, in place of each such unavailable selection use the next warmer setting. Each reportable value to be used for the warm water wash setting shall be the arithmetic average of all tests conducted pursuant to this section.
3.5.2.1 Maximum test load and water fill. Hot water consumption (Hwx), cold water consumption (Cwx), and electrical energy consumption (Ewx) shall be measured with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1.
3.5.2.2 Minimum test load and water fill. Hot water consumption (Hwn), cold water consumption (Cwn), and electrical energy consumption (Ewn) shall be measured with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1.
3.5.2.3 Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hwa), cold water consumption (Cwa), and electrical energy consumption (Ewa) with an average test load size as determined per Table 5.1.
3.6 “Cold Wash” (Minimum Wash Temperature Selection). Water and electrical energy consumption shall be measured for each water fill level or test load size as specified in 3.6.1 through 3.6.3 for the coldest wash temperature selection available.
3.6.1 Maximum test load and water fill. Hot water consumption (Hcx), cold water consumption (Ccx), and electrical energy consumption (Ecx) shall be measured for a cold wash/cold rinse energy test cycle, with the controls set for the maximum water fill level. The maximum test load size is to be used and shall be determined per Table 5.1.
3.6.2 Minimum test load and water fill. Hot water consumption (Hcn), cold water consumption (Ccn), and electrical energy consumption (Ecn) shall be measured for a cold wash/cold rinse energy test cycle, with the controls set for the minimum water fill level. The minimum test load size is to be used and shall be determined per Table 5.1.
3.6.3 Average test load and water fill. For clothes washers with an adaptive water fill control system, measure the values for hot water consumption (Hca), cold water consumption (Cca), and electrical energy consumption (Eca) for a cold wash/cold rinse energy test cycle, with an average test load size as determined per Table 5.1.
3.7 Warm Rinse. Tests in sections 3.7.1 and 3.7.2 shall be conducted with the hottest rinse temperature available. If multiple wash temperatures are available with the hottest rinse temperature, any “warm wash” temperature may be selected to conduct the tests.
3.7.1 For the rinse only, measure the amount of hot water consumed by the clothes washer including all deep and spray rinses, for the maximum (Rx), minimum (Rn), and, if required by section 3.5.2.3, average (Ra) test load sizes or water fill levels.
3.7.2 Measure the amount of electrical energy consumed by the clothes washer to heat the rinse water only, including all deep and spray rinses, for the maximum (ERx), minimum (ERn), and, if required by section 3.5.2.3, average (ERa), test load sizes or water fill levels.
3.8 Remaining Moisture Content:
3.8.1 The wash temperature will be the same as the rinse temperature for all testing. Use the maximum test load as defined in Table 5.1 and section 3.1 for testing.
3.8.2 For clothes washers with cold rinse only:
3.8.2.1 Record the actual ‘bone dry’ weight of the test load (WImax), then place the test load in the clothes washer.
3.8.2.2 Set water level selector to maximum fill.
3.8.2.3 Run the energy test cycle.
3.8.2.4 Record the weight of the test load immediately after completion of the energy test cycle (WCmax).
3.8.2.5 Calculate the remaining moisture content of the maximum test load, RMCMAX, expressed as a percentage and defined as:
RMCmax=((WCmax−WImax)/WImax)×100%
3.8.3 For clothes washers with cold and warm rinse options:
3.8.3.1 Complete steps 3.8.2.1 through 3.8.2.4 for cold rinse. Calculate the remaining moisture content of the maximum test load for cold rinse, RMCCOLD, expressed as a percentage and defined as:
RMCCOLD=((WCmax−WImax)/WImax)×100%
3.8.3.2 Complete steps 3.8.2.1 through 3.8.2.4 for warm rinse. Calculate the remaining moisture content of the maximum test load for warm rinse, RMCWARM, expressed as a percentage and defined as:
RMCWARM=((WCmax−WImax)/WImax)×100%
3.8.3.3 Calculate the remaining moisture content of the maximum test load, RMCmax, expressed as a percentage and defined as:
RMCmax=RMCCOLD×(1-TUFr)+RMCWARM×(TUFr).
where:
TUFr is the temperature use factor for warm rinse as defined in Table 4.1.1.
3.8.4 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 energy test cycle, shall be tested at the maximum and minimum extremes of the available options, excluding any “no spin” (zero spin speed) settings, in accordance with requirements in 3.8.2 or 3.8.3. 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 4.3 shall be:
RMC = 0.75×RMCmax extraction+0.25×
RMCmin extraction
4. Calculation of Derived Results From Test Measurements
4.1 Hot water and machine electrical energy consumption of clothes washers.
4.1.1 Per-cycle temperature-weighted hot water consumption for maximum, average, and minimum water fill levels using each appropriate load size as defined in section 2.8 and Table 5.1. Calculate for the cycle under test the per-cycle temperature weighted hot water consumption for the maximum water fill level, Vhx, the average water fill level, Vha, and the minimum water fill level, Vhn, expressed in gallons per cycle (or liters per cycle) and defined as:
(a) Vhx=[Hmx×TUFm]+[Hhx×TUFh]+[Hwx ×TUFw]+[Hcx×TUFc]+[Rx×TUFr]
(b) Vha=[Hma×TUFm]+[Hha×TUFh]+[Hwa ×TUFw]+[Hca×TUFc]+[Ra×TUFr]
(c) Vhn=[Hmn×TUFm]+[Hhn×TUFh]+[Hwn ×TUFw]+[Hcn×TUFc]+[Rn×TUFr]
where:
Hmx, Hma, and Hmn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the extra-hot wash cycle with the appropriate test loads as defined in section 2.8.
Hhx, Hha, and Hhn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the hot wash cycle with the appropriate test loads as defined in section 2.8.
Hwx, Hwa, and Hwn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the warm wash cycle with the appropriate test loads as defined in section 2.8.
Hcx, Hca, and Hcn, are reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the cold wash cycle with the appropriate test loads as defined in section 2.8.
Rx, Ra, and Rn are the reported hot water consumption values, in gallons per-cycle (or liters per cycle), at maximum, average, and minimum water fill, respectively, for the warm rinse cycle and the appropriate test loads as defined in section 2.8.
TUFm, TUFh, TUFw, TUFc, and TUFr are temperature use factors for extra hot wash, hot wash, warm wash, cold wash, and warm rinse temperature selections, respectively, and are as defined in Table 4.1.1.
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Table 4.1.1_Temperature Use Factors ----------------------------------------------------------------------------------------------------------------Max Wash Temp Available....... [le]135 °F [le]135 °F [le]135 °F >135 °F >135 °F (57.2 °C) (57.2 °C) (57.2 °C) (57.2 °C) (57.2 °C)No. Wash Temp Selections...... Single 2 Temps >2 Temps 3 Temps >3 TempsTUFm (extra hot).............. NA NA NA 0.14 0.05TUFh (hot).................... NA 0.63 0.14 NA 0.09TUFw (warm)................... NA NA 0.49 0.49 0.49TUFc (cold)................... 1.00 0.37 0.37 0.37 0.37TUFr (warm rinse)............. 0.27 0.27 0.27 0.27 0.27----------------------------------------------------------------------------------------------------------------
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4.1.2 Total per-cycle hot water energy consumption for all maximum, average, and minimum water fill levels tested. Calculate the total per-cycle hot water energy consumption for the maximum water fill level, HEmax, the minimum water fill level, HEmin, and the average water fill level, HEavg, expressed in kilowatt-hours per cycle and defined as:
(a) HEmax = [Vhx×T×K]=Total energy when a maximum load is tested.
(b) HEavg = [Vha×T×K]=Total energy when an average load is tested.
(c) HEmin = [Vhn×T×K]=Total energy when a minimum load is tested.
where:
T=Temperature rise=75 °F (41.7 °C).
K=Water specific heat in kilowatt-hours per gallon degree F=0.00240 (0.00114 kWh/L-°C).
Vhx Vha, and Vhn, are as defined in 4.1.1.
4.1.3 Total weighted per-cycle hot water energy consumption. Calculate the total weighted per cycle hot water energy consumption, HET, expressed in kilowatt-hours per cycle and defined as:
HET=[HEmax×Fmax]+[HEavg×Favg]+[HEmn×Fmin]
where:
HEmax, HEavg, and HEmin are as defined in 4.1.2.
Fmax, Favg, and Fmin are the load usage factors for the maximum, average, and minimum test loads based on the size and type of control system on the washer being tested. The values are as shown in table 4.1.3.
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Table 4.1.3_Load Usage Factors------------------------------------------------------------------------ Water fill control system Manual Adaptive------------------------------------------------------------------------Fmax =.......................................... 0.72 \1\ 0.12 \2\Favg =.......................................... .......... 0.74 \2\Fmin=........................................... 0.28 \1\ 0.14 \2\------------------------------------------------------------------------\1\ Reference 3.2.3.3.\2\ Reference 3.2.3.2.
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4.1.4 Total per-cycle hot water energy consumption using gas-heated or oil-heated water. Calculate for the energy test cycle the per-cycle hot water consumption, HETG, using gas heated or oil-heated water, expressed in Btu per cycle (or megajoules per cycle) and defined as:
HETG=HT×1/e×3412 Btu/kWh or HETG=HET×1/e×3.6 MJ/kWh
where:
e=Nominal gas or oil water heater efficiency=0.75.
HET=As defined in 4.1.3.
4.1.5 Per-cycle machine electrical energy consumption for all maximum, average, and minimum test load sizes. Calculate the total per-cycle machine electrical energy consumption for the maximum water fill level, MEmax, the minimum water fill level, MEmin, and the average water fill level, MEavg, expressed in kilowatt-hours per cycle and defined as:
(a)MEmax= [Emx×TUFm]+ [Ehx×TUFh]+ [Ewx×TUFw]+ [Ecx×TUFc]+ [ERx×TUFr]
(b) MEavg= [Ema×TUFm]+ [Eha×TUFh]+ [Ewa×TUFw]+ [Eca×TUFc]+ [ERa×TUFr]
(c) MEmin= [Emn×TUFm]+ [Ehn×TUFh]+ [Ewn×TUFw]+ [Ecn×xTUFc]+ [ERn×TUFr]
where:
Emx, Ema, and Emn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the extra-hot wash cycle.
Ehx, Eha, and Ehn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the hot wash cycle.
Ewx, Ewa, and Ewn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the warm wash cycle.
Ecx, Eca, and Ecn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the cold wash cycle.
ERx, ERa, ERn, are reported electrical energy consumption values, in kilowatt-hours per cycle, at maximum, average, and minimum test loads, respectively, for the warm rinse cycle per definitions in 3.7.2 of this appendix.
TUFm, TUFh, TUFw, TUFc, and TUFr are as defined in Table 4.1.1.
4.1.6 Total weighted per-cycle machine electrical energy consumption. Calculate the total per cycle load size weighted energy consumption, MET, expressed in kilowatt-hours per cycle and defined as:
MET=[MEmax× Fmax]+[MEavg× Favg]+[MEmin× Fmin]
where:
MEmax, MEavg, and MEmin are as defined in 4.1.5.
Fmax, Favg, and Fmin are as defined in Table 4.1.3.
4.1.7 Total per-cycle energy consumption when electrically heated water is used. Calculate for the energy test cycle the total per-cycle energy consumption, ETE, using electrical heated water, expressed in kilowatt-hours per cycle and defined as:
ETE=HET+MET
where:
MET=As defined in 4.1.6.
HET=As defined in 4.1.3.
4.2 Water consumption of clothes washers. (The calculations in this Section need not be performed to determine compliance with the energy conservation standards for clothes washers.)
4.2.1 Per-cycle water consumption. Calculate the maximum, average, and minimum total water consumption, expressed in gallons per cycle (or liters per cycle), for the cold wash/cold rinse cycle and defined as:
Qmax=[Hcx+Ccx]
Qavg=[Hca+Cca]
Qmin=[Hcn+Ccn]
where:
Hcx, Ccx, Hca, Cca, Hcn, and Ccn are as defined in 3.6.
4.2.2 Total weighted per-cycle water consumption. Calculate the total weighted per cycle consumption, QT, expressed in gallons per cycle (or liters per cycle) and defined as:
QT=[Qmax×Fmax]+[Qavg×Favg]+[Qmin×Fmin]
where:
Qmax, Qavg, and Qmin are as defined in 4.2.1.
Fmax, Favg, and Fmin are as defined in table 4.1.3.
4.2.3 Water consumption factor. Calculate the water consumption factor, WCF, expressed in gallon per cycle per cubic feet (or liter per cycle per liter), as:
WCF=QT / C
where:
QT=as defined in section 4.2.2.
C = as defined in section 3.1.5.
4.3 Per-cycle energy consumption for removal of moisture from test load. Calculate the per-cycle energy required to remove the moisture of the test load, DE, expressed in kilowatt-hours per cycle and defined as
DE=(LAF)×(Maximum test load weight)×(RMC—4%)×(DEF)×(DUF)
where:
LAF=Load adjustment factor=0.52.
Test load weight=As required in 3.8.1, expressed in lbs/cycle.
RMC=As defined in 3.8.2.5, 3.8.3.3 or 3.8.4.
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.
4.4 Modified energy factor. Calculate the modified energy factor, MEF, expressed in cubic feet per kilowatt-hour per cycle (or liters per kilowatt-hour per cycle) and defined as:
MEF=C/(ETE + DE)
where:
C=As defined in 3.1.5.
ETE=As defined in 4.1.7.
DE=As defined in 4.3.
4.5 Energy factor. Calculate the energy factor, EF, expressed in cubic feet per kilowatt-hour per cycle (or liters per kilowatt-hour per cycle) and defined as:
EF=C/ETE
where:
C=As defined in 3.1.5.
ETE=As defined in 4.1.7.
5. Test Loads
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Table 5.1_Test Load Sizes---------------------------------------------------------------------------------------------------------------- Container volume Minimum load Maximum load Average load---------------------------------------------------------------------------------------------------------------- (liter) >= cu. ft. >= < < lb (kg) lb (kg) lb (kg)----------------------------------------------------------------------------------------------------------------0-0.8..................................... 0-22.7 3.00 1.36 3.00 1.36 3.00 1.360.80-0.90................................. 22.7-25.5 3.00 1.36 3.50 1.59 3.25 1.470.90-1.00................................. 25.5-28.3 3.00 1.36 3.90 1.77 3.45 1.561.00-1.10................................. 28.3-31.1 3.00 1.36 4.30 1.95 3.65 1.661.10-1.20................................. 31.1-34.0 3.00 1.36 4.70 2.13 3.85 1.751.20-1.30................................. 34.0-36.8 3.00 1.36 5.10 2.31 4.05 1.841.30-1.40................................. 36.8-39.6 3.00 1.36 5.50 2.49 4.25 1.931.40-1.50................................. 39.6-42.5 3.00 1.36 5.90 2.68 4.45 2.021.50-1.60................................. 42.5-45.3 3.00 1.36 6.40 2.90 4.70 2.131.60-1.70................................. 45.3-48.1 3.00 1.36 6.80 3.08 4.90 2.221.70-1.80................................. 48.1-51.0 3.00 1.36 7.20 3.27 5.10 2.311.80-1.90................................. 51.0-53.8 3.00 1.36 7.60 3.45 5.30 2.401.90-2.00................................. 53.8-56.6 3.00 1.36 8.00 3.63 5.50 2.492.00-2.10................................. 56.6-59.5 3.00 1.36 8.40 3.81 5.70 2.592.10-2.20................................. 59.5-62.3 3.00 1.36 8.80 3.99 5.90 2.682.20-2.30................................. 62.3-65.1 3.00 1.36 9.20 4.17 6.10 2.772.30-2.40................................. 65.1-68.0 3.00 1.36 9.60 4.35 6.30 2.862.40-2.50................................. 68.0-70.8 3.00 1.36 10.00 4.54 6.50 2.952.50-2.60................................. 70.8-73.6 3.00 1.36 10.50 4.76 6.75 3.062.60-2.70................................. 73.6-76.5 3.00 1.36 10.90 4.94 6.95 3.152.70-2.80................................. 76.5-79.3 3.00 1.36 11.30 5.13 7.15 3.242.80-2.90................................. 79.3-82.1 3.00 1.36 11.70 5.31 7.35 3.332.90-3.00................................. 82.1-85.0 3.00 1.36 12.10 5.49 7.55 3.423.00-3.10................................. 85.0-87.8 3.00 1.36 12.50 5.67 7.75 3.523.10-3.20................................. 87.8-90.6 3.00 1.36 12.90 5.85 7.95 3.613.20-3.30................................. 90.6-93.4 3.00 1.36 13.30 6.03 8.15 3.703.30-3.40................................. 93.4-96.3 3.00 1.36 13.70 6.21 8.35 3.793.40-3.50................................. 96.3-99.1 3.00 1.36 14.10 6.40 8.55 3.883.50-3.60................................. 99.1-101.9 3.00 1.36 14.60 6.62 8.80 3.993.60-3.70................................. 101.9-104.8 3.00 1.36 15.00 6.80 9.00 4.083.70-3.80................................. 104.8-107.6 3.00 1.36 15.40 6.99 9.20 4.17----------------------------------------------------------------------------------------------------------------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).
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6. Waivers and Field Testing
6.1 Waivers and Field Testing for Non-conventional Clothes Washers. Manufacturers of nonconventional 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 6.3 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.
6.2 Nonconventional 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 energy 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 or consumer laundering conditions 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
6.3 Adaptive water fill control system field test. Section 3.2.3.1 defines the test method for measuring energy consumption for clothes washers which incorporate control systems having both adaptive and alternate cycle selections. Energy consumption calculated by the method defined in section 3.2.3.1 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 energy 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 would 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 5 of these test procedures to determine the energy consumption, water consumption, and remaining moisture content 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 (e.g., cottons, linens, permanent press). 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 energy test cycle.
Calculate:
T=The total number of energy test cycles run during the field test
Ta=The total number of adaptive control energy test cycles
Tm=The total number of manual control energy 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 (HET, MET, and DE) and water consumption (QT), values calculated in section 4 for the manual and adaptive modes, should be combined using Pa and Pm as the weighting factors.
[62 FR 45508, Aug. 27, 1997; 63 FR 16669, Apr. 6, 1998, as amended at 66 FR 3330, Jan. 12, 2001; 68 FR 62204, Oct. 31, 2003; 69 FR 18803, Apr. 9, 2004]
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