Quiero saber acerca de...

24542

Federal Register / Vol. 86, No. 87 / Friday, May 7, 2021 / Proposed Rules TABLE II.3POTENTIAL NEW TECHNOLOGY OPTIONS FOR CEILING FANS
Technology option
Permanent Magnet DC
Brushed DC Motors.

Description Motor
Self-Balancing Systems

Permanent magnets are located on the motor stator with brushes contacting a commutator on the rotor.
These are more efficient than AC motors but require more maintenance than AC motors since the brushes wear out.
Some fans advertise a self-balancing system that prevents wobbling of the fan blades. The advertised benefits include reduction in noise and improvements in blade aerodynamics. An improvement in blade aerodynamics is generally expected to reduce energy fan consumption.

While DOEs compliance certification database does not currently have manufacturers report efficiency, DOEs market research, along with public databases like the California Energy Commissions CEC Modern Appliance Efficiency Database System and the Energy Star Certified Ceiling Fans Database, indicate that many ceiling fans on the market exceed DOEs maximum-technologically max-tech feasible designs presented in the January 2017 Final Rule.
Issue 7: DOE seeks information on the technologies listed in Table II.2 of this document regarding their applicability to the current market and how these technologies may impact the efficiency of ceiling fans as measured according to the DOE test procedure. DOE also seeks information on how these technologies may have changed since they were considered in the January 2017 Final Rule analysis. Specifically, DOE seeks information on the range of efficiencies or performance characteristics that are currently available for each technology option as well as the impact of each on availability of ceiling fan features or consumer utility.
Issue 8: DOE seeks information on the technologies listed in Table II.3 of this document regarding their market adoption, costs, and any concerns with incorporating them into products e.g., impacts on consumer utility, potential safety concerns, manufacturing/
production/implementation issues, etc..
Further, DOE seeks comment on other technology options not listed in Table II.3 of this document that it should consider for inclusion in its analysis and if these technologies may impact product feature availability or consumer utility.
Issue 9: As DOE assesses the technologies listed in Table II.2 and Table II.3 of this document for LDCFs, DOE seeks information about the relationship between the CFM/W and the CFEI metric. Specifically, DOE
requests comment about whether the technologies that improve the efficiency in terms of CFM/W also improve
VerDate Sep<11>2014

17:32 May 06, 2021

Jkt 253001

efficiency in terms of CFEI. Further, DOE seeks airflow and power usage data at high speed and at 40 percent speed or the nearest speed that is not less than 40 percent speed for LDCFs currently on the market.
Issue 10: DOE seeks feedback on what additional design options are incorporated in the commercially available products that exceed DOEs max-tech. Specifically, DOE requests comment on the fans present in the CEC
Modern Appliance Efficiency Database System and the Energy Star Certified Ceiling Fans Database that exceed DOEs previous max-tech efficiency levels and whether this increase is due to new technology options that would represent a new max-tech model or a sacrifice of consumer utility.
Issue 11: DOE requests feedback on whether, and if so how, manufacturers would incorporate the technology options listed in Table II.2 and Table II.3 of this document to increase energy efficiency in ceiling fans beyond the baseline. This includes information on the order in which manufacturers would incorporate the different technologies to incrementally improve the efficiencies of products from the baseline through the max-tech designs and beyond maxtech designs where possible. As part of this request, DOE seeks information as to whether there are limitations on the use of certain combinations of design options. DOE also requests feedback on whether the increased energy efficiency would lead to other design changes that would not occur otherwise. DOE is also interested in information regarding any potential impact of design options on a manufacturers ability to incorporate additional functions or attributes in response to consumer demand.
Issue 12: DOE requests comment on whether certain design options may not be applicable to or are incompatible with specific product classes.
2. Screening of Technology Options The purpose of the screening analysis is to evaluate the technologies that improve equipment efficiency to
PO 00000

Frm 00030

Fmt 4702

Sfmt 4702

determine which technologies will be eliminated from further consideration and which will be passed to the engineering analysis for further consideration. DOE determines whether to eliminate certain technology options from further consideration based on technological feasibility; practicability to manufacture, install, and service;
adverse impacts on product utility or product availability; adverse impacts on health or safety; and unique-pathway proprietary technologies. 10 CFR part 430, subpart C, appendix A, 6c3 and 7b.
Technology options identified in the technology assessment are evaluated against these criteria using DOE
analyses and inputs from interested parties e.g., manufacturers, trade organizations, and energy efficiency advocates. Technologies that pass through the screening analysis are referred to as design options in the engineering analysis. Technology options that fail to meet one or more of the five criteria are eliminated from consideration.
Table II.4 summarizes the technology options that DOE screened out in the January 2017 Final Rule, and the applicable screening criteria. Most technologies were eliminated because of significant adverse impacts on the utility of the equipment to a considerable number of consumer subgroups. 82 FR 6826, 68376839.
Three-phase induction motors were not considered as a design option for standard, hugger, VSD, and HSSD fans, primarily because three-phase power is extremely uncommon in residential applications. Large direct-drive singlephase induction motors were screened out for HSSD and LDCF because HSSD
manufacturers indicated that HSSD
ceiling fans already use the most efficient size of AC induction motors, while LDCF manufacturers stated that increasing the size of the motor in a LDCF will not improve energy efficiency. See chapter 4 of the 2017 CF
ECS TSD.

E:FRFM07MYP1.SGM

07MYP1