Voglio sapere a riguardo di…

72754

Federal Register / Vol. 86, No. 243 / Wednesday, December 22, 2021 / Proposed Rules
aid, and on whether the use of rinse aid had any effect on measured energy and water consumption. Id.
AHAM commented that rinse aid does not impact energy and water use.
AHAM further commented that IEC
60436 specifies use of rinse aid because there is a performance element to that test. As such, AHAM did not support a proposal to add a rinse aid requirement or a need to collect consumer data on rinse aid usage. AHAM, No. 5 at p. 7
Based on these comments, and the lack of data regarding the effect of rinse aid on measured energy and water usage and consumer usage of it, DOE
maintains its conclusions from past rulemakings that the test procedure should preclude the use of rinse aid, and that the rinse aid container should remain empty during testing. 68 FR
51887, 51891. Adding a rinse aid requirement would increase test burden without information indicating that it would improve the representativeness of the test results, and it could potentially cause variation in test results. For these reasons, DOE is not proposing a rinse aid requirement in appendix C1 or the new appendix C2, which is consistent with the specifications in AHAM DW12020
that DOE proposes to reference in this NOPR.

khammond on DSKJM1Z7X2PROD with PROPOSALS2

7. Water Softener Regeneration Cycles In the October 2012 final rule, DOE
adopted a method for measuring the energy consumed during regeneration cycles for water softeners built into certain residential dishwashers. 77 FR
65942, 65960. The adopted approach relies on manufacturer-reported values for the energy and water use for each regeneration cycle and the number of annual regeneration cycles. Id. The current calculations for water softener regeneration cycles are provided in Sections 5.1.3, 5.4.3, 5.5.1.2, 5.5.2.2, 5.6.1.2, and 5.6.2.2 of appendix C1. In the August 2019 RFI, DOE requested comment on whether any dishwasher had a water softener regeneration cycle at every or nearly every cycle, and if any additional instructions should be specified in appendix C1 to avoid repeatedly accounting for the water and energy use during water softener regeneration. 84 FR 43071, 43077.
DOE did not receive any comment regarding the energy and water use during water softener regeneration cycles, and thus does not propose any changes in this NOPR with regards to water softener regeneration cycles, aside from maintaining the associated definitions and calculations specified in AHAM DW12020.

VerDate Sep<11>2014

17:32 Dec 21, 2021

Jkt 256001

8. Water Re-Use System On November 1, 2013, DOE published a Decision and Order November 2013
Decision and Order granting Whirlpool a test procedure waiver Whirlpool waiver for testing specified basic models equipped with a water use system, in which water from the final rinse cycle is stored for use in the subsequent cycle, with periodic draining drain out and cleaning clean out events. 78 FR
65629 Case No. DW11.22 Whirlpool is required to test the basic model specified in the November 2013
Decision and Order using appendix C1, with the following modifications:
1 Water use system water and energy consumption shall be accounted for during dishwasher water and energy measurement and reporting, subject to the following:
2 For drain out events, constant values of 0.072 gallons per cycle and 2.6 kWh/year shall be added to values measured by appendix C1.
3 For clean out events, constant values of 0.071 gallons per cycle and 10.3 kWh/year shall also be added to values measured by appendix C1.
4 To calculate the detergent quantity for testing, a constant value of 0.91 gallons for the water fill amount shall be used, representing both saved water fill and house supply water fill.
5 If a drain out or clean out event occurs during testing, any results from that use of the test procedure shall be disregarded. Disconnect and reconnect power to the dishwasher, then restart the test procedure.
6 To detect a drain out event, measure the water volume supplied during the first fill. A cycle shall be considered to have a drain out event if the first fill uses approximately 1 gallon from the water supply. Without a drain out event, the first fill would use approximately 0.11 gallons from the water supply.
7 To detect a clean out event, monitor the temperature of the sump water using an additional temperature measuring device.
The device shall be placed inside the sump in an area such that the device will always be submerged in water and will not interfere with the operation of the dishwasher. A cycle shall be considered to have a clean out event if the temperature of the sump water during wash and rinse portions of the cycle reaches 150 F. Without a clean out event, the highest sump water temperatures would reach approximately 140 F.

78 FR 65629, 65631.
In the August 2019 RFI, DOE
requested feedback on whether the test procedure waiver provisions were generally appropriate for testing basic models with the same attributes as those subject to the November 2013 Decision and Order. 84 FR 43071, 43078.
22 All materials regarding the Whirlpool waiver are available in docket EERE2013BTWAV0042
at www.regulations.gov.

PO 00000

Frm 00018

Fmt 4701

Sfmt 4702

In response, both GEA and AHAM
supported incorporating the provisions of the Whirlpool waiver into appendix C1. AHAM, No. 5 at p. 9; GE, No. 10
at p. 2 Subsequently, AHAM published the AHAM DW12020 standard, which includes provisions for testing water reuse system dishwashers. Specifically, Sections 1.3, 1.9, and 1.29 of AHAM
DW12020 include definitions for a clean out event, drain out event, and water re-use system dishwasher, respectively. These definitions are consistent with those specified in the November 2013 Decision and Order granted in November 2013. AHAM DW
12020 also specifies the detergent dosing requirements, methods to measure the energy and water consumption of water re-use system dishwashers, including detection of drain out and clean out events, and calculations for energy and water consumption. Sections 2.10.2, 4.1.3, 5.1.4, 5.15, 5.4.4, 5.4.5, 5.5.1.3, 5.5.1.4, 5.5.2.3, 5.5.2.4, 5.6.1.3, 5.6.1.4, 5.6.2.3, and 5.6.2.4 of AHAM DW12020. All of these requirements are consistent with the alternate test procedure specified in the November 2013
Decision and Order granting the waiver to Whirlpool for water re-use systems, except for the specified water energy consumption equations in Sections 5.6.1.3, 5.6.1.4, 5.6.2.3, and 5.6.2.4, which use an incorrect constant.23
As soon as practicable after the granting of any waiver, DOE is required to publish in the Federal Register a notice of proposed rulemaking to amend its regulations so as to eliminate any need for the continuation of such waiver. 10 CFR 430.27l. As soon thereafter as practicable, DOE will publish in the Federal Register a final rule. Id. Since AHAM DW12020
includes the language from the Whirlpool waiver, DOE proposes to reference these requirements in appendix C1 and the new appendix C2, with added modifications to the equations in Sections 5.6.1.3, 5.6.1.4, 5.6.2.3, and 5.6.2.4 of AHAM DW1
2020.
DOE requests comment on its proposal to reference in appendix C1
and the new appendix C2 the testing provisions from AHAM DW12020 to address the Whirlpool waiver for water re-use system dishwashers.
G. Cleaning Performance EPCA requires DOE to establish test procedures that are reasonably designed 23 The equations in the noted sections improperly use the constant K = specified heat of water in kWh per gal per F, instead of C/e, where C = specific heat of water in Btus per gal per F, and e =
nominal gas or oil water heater recovery efficiency.

E:FRFM22DEP2.SGM

22DEP2