Federal Register - December 7, 2021
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Source: Federal Register
Federal Register / Vol. 86, No. 232 / Tuesday, December 7, 2021 / Proposed Rules 3 Include high-speed belt-driven and large-diameter belt-driven ceiling fans within scope;
4 Add a standby power metric for largediameter ceiling fans;
5 Modify the low-speed definition to ensure that LSSD ceiling fans including VSD
ceiling fans that also meet the definition of an LSSD fan are tested at a more representative low speed rather than the currently required lowest available ceiling fan speed;
6 Allow use of an alternative procedure for air velocity data collection that relies on a two-arm sensor arm setup, and require setups with arm rotation to stabilize the arm prior to data collection;
7 Clarify the alignment of air velocity sensor placement on the sensor arms;
8 Specify the instructions to measure blade thickness for LSSD and HSSD ceiling fan definitions;
9 Specify test procedures for ceiling fans with accessories and/or features; and
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10 Amend product-specific rounding and enforcement provisions for ceiling fans.
Table II.1 summarizes DOEs proposed actions compared to the current test procedure, as well as the reason for the proposed change.
TABLE II.1SUMMARY OF CHANGES IN PROPOSED TEST PROCEDURE RELATIVE TO CURRENT TEST PROCEDURE
Current DOE test procedure
NOPR proposal
SNOPR proposal
Defines ceiling fan based on EPCA as a nonportable device that is suspended from a ceiling for circulating air via the rotation of fan blades.
Interpreted the EPCA definition of ceiling fan to mean those fans offered for mounting only on a ceiling and seeks comment on a proposed alternative interpretation.
Response to industry comments.
Excludes large diameter fans with a diameter of greater than 24
feet from the test procedure.
Specified that large-diameter ceiling with blade spans greater than 24 feet do not need to be tested pursuant to the DOE test method.
N/A
Defines the term circulating air for the purpose of the ceiling fan definition to mean the discharge of air in an upward or downward direction with the air returning to the intake side of the fan. A ceiling fan that has a ratio of fan blade span in inches to maximum rotation rate in revolutions per minute greater than 0.06 provides circulating air.
Includes large diameter fans with a diameter of greater than 24
feet in the scope of the test procedure.
Includes definitions and test procedures for high-speed beltdriven ceiling fans and large-diameter belt-driven ceiling fans.
Amends Appendix U to include a standby power metric for largediameter ceiling fans.
Response to industry comments.
Defines low speed as the lowest available ceiling fan speed for which fewer than half or three, whichever is fewer, sensors per individual axis are measuring less than 40 feet per minute. Alternatively, DOE is considering representing the proposed definition as a table instead, indicating the number of sensors that must measure >40 FPM.
Adds an alternative two-arm setup to measure air velocity. Further, adds requirement for setups that require arm rotation to stabilize the arm to dissipate any residual turbulence prior to data collection.
Provides explicit instructions to align the air velocity sensors perpendicular to the airflow.
Improve the repeatability and reproducibility of the test procedure as determined during round robin testing.
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Excludes all belt-driven ceiling fans from the test procedure.
Includes a standby power test procedure, but no standby power metric for large-diameter ceiling fan CFEI metric. Prior to the Energy Act of 2020, the CFM/W
metric was applicable for largediameter ceiling fans, which included standby power.
Defines low speed as the lowest available ceiling fan speed, i.e., the fan speed corresponding to the minimum, non-zero, blade RPM.
N/A
Prescribes two setups, a four-arm and one-arm sensor setup for certain fan types.
N/A
Does not explicitly specify air velocity sensor alignment or acceptance angle.
N/A
Does not specify how fan blade thickness should be measured.
Added specification to measure fan blade thickness without consideration of rolled-edge blade design.
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No proposed updates, but requested comment on updating the definition of low speed to as the lowest available ceiling fan speed for which fewer than half or three, whichever is fewer, sensors on any individual axis are measuring less than 30 feet per minute.
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Adds specification to measure fan blade thickness in a consistent manner for all fan blade types including rolled-edge blade designs.
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Response to industry comments.
42 U.S.C. 6295gg2A requires test procedures for all products to include standby mode and off mode energy consumption.
Improve the repeatability and reproducibility of the test procedure as determined during round robin testing.
Improve the repeatability and reproducibility of the test procedure as determined during round robin testing.
Improve the repeatability and reproducibility of the test procedure.
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