Loading (50 kb)...'
(continued)
(RMCcloth): RMCstandard ~ A * RMCcloth + B
Where A and B are coefficients of the linear least-squares fit.
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 52.8
200......................................................... 35.7 40.4 37.9 43.1
350......................................................... 29.6 33.1 30.7 35.8
500......................................................... 24.2 28.7 25.5 30.0
----------------------------------------------------------------------------------------------------------------
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:
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 by
Min Min Avg the Clothes
Min Washer.
------------------------------------------------------------------------
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/ft 3 for 100 °F (993 kg/m 3 for 37.8 °C) or 62.3 lbs/ft 3 for 60 °F (998 kg/m 3 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.
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 >3
Test 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)
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.
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 Temps
TUFm (extra hot).............. NA NA NA 0.14 0.05
TUFh (hot).................... NA 0.63 0.14 NA 0.09
TUFw (warm)................... NA NA 0.49 0.49 0.49
TUFc (cold)................... 1.00 0.37 0.37 0.37 0.37
TUFr (warm rinse)............. 0.27 0.27 0.27 0.27 0.27
----------------------------------------------------------------------------------------------------------------
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.
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.
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
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 1.36
0.80-0.90................................. 22.7-25.5 3.00 1.36 3.50 1.59 3.25 1.47
0.90-1.00................................. 25.5-28.3 3.00 1.36 3.90 1.77 3.45 1.56
1.00-1.10................................. 28.3-31.1 3.00 1.36 4.30 1.95 3.65 1.66
1.10-1.20................................. 31.1-34.0 3.00 1.36 4.70 2.13 3.85 1.75
1.20-1.30................................. 34.0-36.8 3.00 1.36 5.10 2.31 4.05 1.84
1.30-1.40................................. 36.8-39.6 3.00 1.36 5.50 2.49 4.25 1.93
1.40-1.50................................. 39.6-42.5 3.00 1.36 5.90 2.68 4.45 2.02
1.50-1.60................................. 42.5-45.3 3.00 1.36 6.40 2.90 4.70 2.13
1.60-1.70................................. 45.3-48.1 3.00 1.36 6.80 3.08 4.90 2.22
1.70-1.80................................. 48.1-51.0 3.00 1.36 7.20 3.27 5.10 2.31
1.80-1.90................................. 51.0-53.8 3.00 1.36 7.60 3.45 5.30 2.40
1.90-2.00................................. 53.8-56.6 3.00 1.36 8.00 3.63 5.50 2.49
2.00-2.10................................. 56.6-59.5 3.00 1.36 8.40 3.81 5.70 2.59
2.10-2.20................................. 59.5-62.3 3.00 1.36 8.80 3.99 5.90 2.68
2.20-2.30................................. 62.3-65.1 3.00 1.36 9.20 4.17 6.10 2.77
2.30-2.40................................. 65.1-68.0 3.00 1.36 9.60 4.35 6.30 2.86
2.40-2.50................................. 68.0-70.8 3.00 1.36 10.00 4.54 6.50 2.95
2.50-2.60................................. 70.8-73.6 3.00 1.36 10.50 4.76 6.75 3.06
2.60-2.70................................. 73.6-76.5 3.00 1.36 10.90 4.94 6.95 3.15
2.70-2.80................................. 76.5-79.3 3.00 1.36 11.30 5.13 7.15 3.24
2.80-2.90................................. 79.3-82.1 3.00 1.36 11.70 5.31 7.35 3.33
2.90-3.00................................. 82.1-85.0 3.00 1.36 12.10 5.49 7.55 3.42
3.00-3.10................................. 85.0-87.8 3.00 1.36 12.50 5.67 7.75 3.52
3.10-3.20................................. 87.8-90.6 3.00 1.36 12.90 5.85 7.95 3.61
3.20-3.30................................. 90.6-93.4 3.00 1.36 13.30 6.03 8.15 3.70
3.30-3.40................................. 93.4-96.3 3.00 1.36 13.70 6.21 8.35 3.79
3.40-3.50................................. 96.3-99.1 3.00 1.36 14.10 6.40 8.55 3.88
3.50-3.60................................. 99.1-101.9 3.00 1.36 14.60 6.62 8.80 3.99
3.60-3.70................................. 101.9-104.8 3.00 1.36 15.00 6.80 9.00 4.08
3.70-3.80................................. 104.8-107.6 3.00 1.36 15.40 6.99 9.20 4.17
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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).
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]
Appendixes K–L to Subpart B of Part 430 [Reserved]
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Appendix M to Subpart B of Part 430—Uniform Test Method for Measuring the Energy Consumption of Central Air Conditioners and Heat Pumps
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1. DEFINITIONS
2. TESTING CONDITIONS
2.1 Test room requirements.
2.2 Test unit installation requirements.
2.2.1 Defrost control settings.
2.2.2 Special requirements for units having a multiple-speed outdoor fan.
2.2.3 Special requirements for multi-split air conditioners and heat pumps, and systems composed of multiple mini-split units (outdoor units located side-by-side) that would normally operate using two or more indoor thermostats.
2.2.4 Wet-bulb temperature requirements for the air entering the indoor and outdoor coils.
2.2.4.1 Cooling mode tests.
2.2.4.2 Heating mode tests.
2.2.5 Additional refrigerant charging requirements.
2.3 Indoor air volume rates.
2.3.1 Cooling tests.
2.3.2 Heating tests.
2.4 Indoor coil inlet and outlet duct connections.
2.4.1 Outlet plenum for the indoor unit.
2.4.2 Inlet plenum for the indoor unit.
2.5 Indoor coil air property measurements and air damper box applications.
2.5.1 Test set-up on the inlet side of the indoor coil: For cases where the inlet damper box is installed.
2.5.1.1 If the section 2.4.2 inlet plenum is installed.
2.5.1.2 If the section 2.4.2 inlet plenum is not installed.
2.5.2 Test set-up on the inlet side of the indoor unit: For cases where no inlet damper box is installed.
2.5.3 Indoor coil static pressure difference measurement.
2.5.4 Test set-up on the outlet side of the indoor coil.
2.5.4.1 Outlet air damper box placement and requirements.
2.5.4.2 Procedures to minimize temperature maldistribution.
2.5.5 Dry bulb temperature measurement.
2.5.6 Water vapor content measurement.
2.5.7 Air damper box performance requirements.
2.6 Airflow measuring apparatus.
2.7 Electrical voltage supply.
2.8 Electrical power and energy measurements.
2.9 Time measurements.
2.10 Test apparatus for the secondary space conditioning capacity measurement.
2.10.1 Outdoor Air Enthalpy Method.
2.10.2 Compressor Calibration Method.
2.10.3 Refrigerant Enthalpy Method.
2.11 Measurement of test room ambient conditions.
2.12 Measurement of indoor fan speed.
2.13 Measurement of barometric pressure.
3. TESTING PROCEDURES
3.1 General Requirements.
3.1.1 Primary and secondary test methods.
3.1.2 Manufacturer-provided equipment overrides.
3.1.3 Airflow through the outdoor coil.
3.1.4 Airflow through the indoor coil.
3.1.4.1 Cooling Certified Air Volume Rate.
3.1.4.1.1 Cooling Certified Air Volume Rate for Ducted Units.
3.1.4.1.2 Cooling Certified Air Volume Rate for Non-ducted Units.
3.1.4.2 Cooling Minimum Air Volume Rate.
3.1.4.3 Cooling Intermediate Air Volume Rate.
3.1.4.4 Heating Certified Air Volume Rate.
3.1.4.4.1 Ducted heat pumps where the Heating and Cooling Certified Air Volume Rates are the same.
3.1.4.4.2 Ducted heat pumps where the Heating and Cooling Certified Air Volume Rates are different due to indoor fan operation.
3.1.4.4.3 Ducted heating-only heat pumps.
3.1.4.4.4 Non-ducted heat pumps, including non-ducted heating-only heat pumps.
3.1.4.5 Heating Minimum Air Volume Rate.
3.1.4.6 Heating Intermediate Air Volume Rate.
3.1.4.7 Heating Nominal Air Volume Rate.
3.1.5 Indoor test room requirement when the air surrounding the indoor unit is not supplied from the same source as the air entering the indoor unit.
3.1.6 Air volume rate calculations.
3.1.7 Test sequence.
3.1.8 Requirement for the air temperature distribution leaving the indoor coil.
3.1.9 Control of auxiliary resistive heating elements.
3.2 Cooling mode tests for different types of air conditioners and heat pumps.
3.2.1 Tests for a unit having a single-speed compressor that is tested with a fixed-speed indoor fan installed, with a constant-air-volume-rate indoor fan installed, or with no indoor fan installed.
3.2.2 Tests for a unit having a single-speed compressor and a variable-speed variable-air-volume-rate indoor fan installed.
3.2.2.1 Indoor fan capacity modulation that correlates with the outdoor dry bulb temperature.
3.2.2.2 Indoor fan capacity modulation based on adjusting the sensible to total (S/T) cooling capacity ratio.
3.2.3 Tests for a unit having a two-capacity compressor.
3.2.4 Tests for a unit having a variable-speed compressor.
3.3 Test procedures for steady-state wet coil cooling mode tests (the A, A2, A1, B, B2, B1, EV, and F1 Tests).
3.4 Test procedures for the optional steady-state dry coil cooling mode tests (the C, C1, and G1 Tests).
3.5 Test procedures for the optional cyclic dry coil cooling mode tests (the D, D1, and I1 Tests).
3.5.1 Procedures when testing ducted systems.
3.5.2 Procedures when testing non-ducted systems.
3.5.3 Cooling mode cyclic degradation coefficient calculation.
3.6 Heating mode tests for different types of heat pumps, including heating-only heat pumps.
3.6.1 Tests for a heat pump having a single-speed compressor that is tested with a fixed speed indoor fan installed, with a constant-air-volume-rate indoor fan installed, or with no indoor fan installed.
3.6.2 Tests for a heat pump having a single-speed compressor and a variable-speed, variable-air-volume-rate indoor fan: capacity modulation correlates with outdoor dry bulb temperature.
3.6.3 Tests for a heat pump having a two-capacity compressor (see Definition 1.45), including two-capacity, northern heat pumps (see Definition 1.46).
3.6.4 Tests for a heat pump having a variable-speed compressor.
3.6.5 Additional test for a heat pump having a heat comfort controller.
3.7 Test procedures for steady-state Maximum Temperature and High Temperature heating mode tests (the H01, H1, H12, H11, and H1N Tests).
3.8 Test procedures for the optional cyclic heating mode tests (the H0C1, H1C, and H1C1 Tests).
3.8.1 Heating mode cyclic degradation coefficient calculation.
3.9 Test procedures for Frost Accumulation heating mode tests (the H2, H22, H2V, and H21 Tests).
3.9.1 Average space heating capacity and electrical power calculations.
3.9.2 Demand defrost credit.
3.10 Test procedures for steady-state Low Temperature heating mode tests (the H3, H32, and H31 Tests).
3.11 Additional requirements for the secondary test methods.
3.11.1 If using the Outdoor Air Enthalpy Method as the secondary test method.
3.11.1.1 If a preliminary test precedes the official test
3.11.1.2 If a preliminary test does not precede the official test.
3.11.1.3 Official test.
3.11.2 If using the Compressor Calibration Method as the secondary test method.
3.11.3 If using the Refrigerant Enthalpy Method as the secondary test method.
3.12 Rounding of space conditioning capacities for reporting purposes.
4. CALCULATIONS OF SEASONAL PERFORMANCE DESCRIPTORS
4.1 Seasonal Energy Efficiency Ratio (SEER) Calculations.
4.1.1 SEER calculations for an air conditioner or heat pump having a single-speed compressor that was tested with a fixed-speed indoor fan installed, a constant-air-volume-rate indoor fan installed, or with no indoor fan installed.
4.1.2 SEER calculations for an air conditioner or heat pump having a single-speed compressor and a variable-speed variable-air-volume-rate indoor fan.
4.1.2.1 Units covered by section 3.2.2.1 where indoor fan capacity modulation correlates with the outdoor dry bulb temperature.
4.1.2.2 Units covered by section 3.2.2.2 where indoor fan capacity modulation is used to adjust the sensible to total cooling capacity ratio.
4.1.3 SEER calculations for an air conditioner or heat pump having a two-capacity compressor.
4.1.3.1 Steady-state space cooling capacity at low compressor capacity is greater than or equal to the building cooling load at temperature Tj, Q ck=1(Tj) = BL(Tj). (continued)