Appendix X to Subpart B of Part 430 - Uniform Test Method for Measuring the Energy Consumption of Dehumidifiers
10:3.0.1.4.18.3.13.6.35 : Appendix X
Appendix X to Subpart B of Part 430 - Uniform Test Method for
Measuring the Energy Consumption of Dehumidifiers Note:
After January 27, 2016, any representations made with respect to
the energy use or efficiency of portable dehumidifiers must be made
in accordance with the results of testing pursuant to this
appendix.
Until January 27, 2016, manufacturers must either test portable
dehumidifiers in accordance with this appendix, or the previous
version of this appendix as it appeared in the Code of Federal
Regulations on January 1, 2015. DOE notes that, because testing
under this appendix X must be completed as of January 27, 2016,
manufacturers may wish to begin using this test procedure
immediately.
Alternatively, manufacturers may certify compliance with any
amended energy conservation standards for portable dehumidifiers
prior to the compliance date of those amended energy conservation
standards by testing in accordance with appendix X1. Any
representations made with respect to the energy use or efficiency
of such portable dehumidifiers must be in accordance with whichever
version is selected.
Any representations made on or after the compliance date of any
amended energy conservation standards, with respect to the energy
use or efficiency of portable or whole-home dehumidifiers, must be
made in accordance with the results of testing pursuant to appendix
X1.
1. Scope
This appendix covers the test requirements used to measure the
energy performance of dehumidifiers.
2. Definitions
2.1 ANSI/AHAM DH-1 means the test standard published by the
American National Standards Institute and the Association of Home
Appliance Manufacturers, titled “Dehumidifiers,” ANSI/AHAM
DH-1-2008, (incorporated by reference; see § 430.3).
2.2 Active mode means a mode in which a dehumidifier is
connected to a mains power source, has been activated, and is
performing the main functions of removing moisture from air by
drawing moist air over a refrigerated coil using a fan, or
circulating air through activation of the fan without activation of
the refrigeration system.
2.3 Combined low-power mode means the aggregate of
available modes other than dehumidification mode.
2.4 Dehumidification mode means an active mode in which a
dehumidifier:
(1) Has activated the main moisture removal function according
to the humidistat, humidity sensor signal, or control setting;
and
(2) Has either activated the refrigeration system or activated
the fan or blower without activation of the refrigeration
system.
2.5 Energy factor for dehumidifiers means a measure of
energy efficiency of a dehumidifier calculated by dividing the
water removed from the air by the energy consumed, measured in
liters per kilowatt-hour (L/kWh).
2.6 IEC 62301 means the test standard published by the
International Electrotechnical Commission, titled “Household
electrical appliances - Measurement of standby power,” Publication
62301 (Edition 2.0 2011-01) (incorporated by reference; see §
430.3).
2.7 Inactive mode means a standby mode that facilitates
the activation of active mode by remote switch (including remote
control), internal sensor other than humidistat or humidity sensor,
or timer, or that provides continuous status display.
2.8 Off mode means a mode in which the dehumidifier is
connected to a mains power source and is not providing any active
mode or standby mode function, and where the mode may persist for
an indefinite time. An indicator that only shows the user that the
dehumidifier is in the off position is included within the
classification of an off mode.
2.9 Off-cycle mode means a standby mode in which the
dehumidifier:
(1) Has cycled off its main function by humidistat or humidity
sensor;
(2) Does not have its fan or blower operating; and
(3) Will reactivate the main function according to the
humidistat or humidity sensor signal.
2.10 Product capacity for dehumidifiers means a measure
of the ability of the dehumidifier to remove moisture from its
surrounding atmosphere, measured in pints collected per 24 hours of
operation under the specified ambient conditions.
2.11 Standby mode means any modes where the dehumidifier
is connected to a mains power source and offers one or more of the
following user-oriented or protective functions which may persist
for an indefinite time:
(1) To facilitate the activation of other modes (including
activation or deactivation of active mode) by remote switch
(including remote control), internal sensor, or timer;
(2) Continuous functions, including information or status
displays (including clocks) or sensor-based functions. A timer is a
continuous clock function (which may or may not be associated with
a display) that provides regular scheduled tasks (e.g.,
switching) and that operates on a continuous basis.
3. Test Apparatus and General Instructions
3.1 Active mode. The test apparatus and instructions for
testing dehumidifiers in dehumidification mode shall conform to the
requirements specified in Section 3, “Definitions,” Section 4,
“Instrumentation,” and Section 5, “Test Procedure,” of ANSI/AHAM
DH-1 (incorporated by reference, see § 430.3), with the following
exceptions.
3.1.1 Psychrometer placement. Place the psychrometer
perpendicular to, and 1 ft. in front of, the center of the intake
grille. For dehumidifiers with multiple intake grilles, place a
separate sampling tree perpendicular to, and 1 ft. in front of, the
center of each intake grille, with the samples combined and
connected to a single psychrometer using a minimal length of
insulated ducting. The psychrometer shall be used to monitor inlet
conditions of one test unit only.
3.1.2 Condensate collection. If means are provided on the
dehumidifier for draining condensate away from the cabinet, collect
the condensate in a substantially closed vessel to prevent
re-evaporation, and place the collection vessel on the
weight-measuring instrument. If no means for draining condensate
away from the cabinet are provided, disable any automatic shutoff
of dehumidification mode operation that is activated when the
collection container is full, and collect any overflow in a pan.
The pan must be covered as much as possible to prevent
re-evaporation without impeding the collection of overflow water.
Place both the dehumidifier and the overflow pan on the
weight-measuring instrument for direct reading of the condensate
weight during the test. Do not use any internal pump to drain the
condensate unless such pump operation is provided for by default in
dehumidification mode.
3.1.3 Control settings. If the dehumidifier has a control
setting for continuous operation in dehumidification mode, select
that setting. Otherwise, set the controls to the lowest available
relative humidity level and, if the dehumidifier has a
user-adjustable fan speed, select the maximum fan speed
setting.
3.1.4 Recording and rounding. Record measurements at the
resolution of the test instrumentation. Round calculated values to
the same number of significant digits as the previous step. Round
the final capacity, energy factor and integrated energy factor
values to two decimal places.
3.2 Standby mode and off mode.
3.2.1 Installation requirements. For the standby mode and
off mode testing, the dehumidifier shall be installed in accordance
with Section 5, Paragraph 5.2 of IEC 62301 (incorporated by
reference, see § 430.3), disregarding the provisions regarding
batteries and the determination, classification, and testing of
relevant modes.
3.2.2 Electrical energy supply.
3.2.2.1 Electrical supply. For the standby mode and off
mode testing, maintain the electrical supply voltage and frequency
indicated in Section 7.1.3, “Standard Test Voltage,” of ANSI/AHAM
DH-1, (incorporated by reference, see § 430.3). The electrical
supply frequency shall be maintained ±1 percent.
3.2.2.2 Supply voltage waveform. For the standby mode and
off mode testing, maintain the electrical supply voltage waveform
indicated in Section 4, Paragraph 4.3.2 of IEC 62301, (incorporated
by reference; see § 430.3).
3.2.3 Standby mode and off mode watt meter. The watt
meter used to measure standby mode and off mode power consumption
shall meet the requirements specified in Section 4, Paragraph 4.4
of IEC 62301 (incorporated by reference, see § 430.3).
3.2.4 Standby mode and off mode ambient temperature. For
standby mode and off mode testing, maintain room ambient air
temperature conditions as specified in Section 4, Paragraph 4.2 of
IEC 62301 (incorporated by reference; see § 430.3).
4. Test Measurement
4.1 Active mode. Measure the energy consumption in
dehumidification mode, EDM, expressed in kilowatt-hours (kWh), the
energy factor, expressed in liters per kilowatt-hour (L/kWh), and
product capacity, expressed in pints per day (pints/day), in
accordance with the test requirements specified in Section 7,
“Capacity Test and Energy Consumption Test,” of ANSI/AHAM DH-1
(incorporated by reference, see § 430.3).
4.2 Standby mode and off mode. Establish the testing
conditions set forth in section 3.2 of this appendix, ensuring that
the dehumidifier does not enter active mode during the test. For
dehumidifiers that take some time to enter a stable state from a
higher power state as discussed in Section 5, Paragraph 5.1, Note 1
of IEC 62301, (incorporated by reference; see § 430.3), allow
sufficient time for the dehumidifier to reach the lower power state
before proceeding with the test measurement. Follow the test
procedure specified in Section 5, Paragraph 5.3.2 of IEC 62301 for
testing in each possible mode as described in sections 4.2.1 and
4.2.2 of this appendix.
4.2.1 If the dehumidifier has an inactive mode, as defined in
section 2.7 of this appendix, but not an off mode, as defined in
section 2.8 of this appendix, measure and record the average
inactive mode power of the dehumidifier, PIA, in watts. Otherwise,
if the dehumidifier has an off mode, as defined in section 2.8 of
this appendix, measure and record the average off mode power of the
dehumidifier, POM, in watts.
4.2.2 If the dehumidifier has an off-cycle mode, as defined in
section 2.9 of this appendix, measure and record the average
off-cycle mode power of the dehumidifier, POC, in watts.
5. Calculation of Derived Results From Test Measurements
5.1 Annual combined low-power mode energy consumption.
Calculate the annual combined low-power mode energy consumption for
dehumidifiers, ETLP, expressed in kilowatt-hours per year,
according to the following:
ETLP = [(PIO × SIO) + (POC × SOC)] × K Where: PIO = PIA,
dehumidifier inactive mode power, or POM, dehumidifier off mode
power in watts, as measured in section 4.2.1 of this appendix. POC
= dehumidifier off-cycle mode power in watts, as measured in
section 4.2.2 of this appendix. SIO = 1,840.5 dehumidifier inactive
mode or off mode annual hours. SOC = 1,840.5 dehumidifier off-cycle
mode annual hours. K = 0.001 kWh/Wh conversion factor for
watt-hours to kilowatt-hours.
5.2 Integrated energy factor. Calculate the integrated
energy factor, IEF, expressed in liters per kilowatt-hour, rounded
to two decimal places, according to the following:
IEF = LW/[EDM + ((ETLP/1095) × 6)] Where: LW = water removed from
the air during the 6-hour dehumidification mode test in liters, as
measured in section 4.1 of this appendix. EDM = energy consumption
during the 6-hour dehumidification mode test in kilowatt-hours, as
measured in section 4.1 of this appendix. ETLP = annual combined
low-power mode energy consumption in kilowatt-hours per year, as
calculated in section 5.1 of this appendix. 1,095 =
dehumidification mode annual hours, used to convert ETLP to
combined low-power mode energy consumption per hour of
dehumidification mode. 6 = hours per dehumidification mode test,
used to convert combined low-power mode energy consumption per hour
of dehumidification mode for integration with dehumidification mode
energy consumption. [77 FR 65995, Oct. 31, 2012, redesignated and
amended at 79 FR 7370, Feb. 7, 2014; 80 FR 45825, July 31, 2015]