-' Tuesday

- _- September 9, 1997

,,

Part II

_ _

Department of

__ _Energy

Office of Energy Efficiency and

p -

s " Renewable Energy

10 CFR Part 430

-- a ^s Energy Conservation Program for

: | : Consumer Products: Test Procedures for

%-- = O eExternally Vented Refrigerators and

_____ _ ERefrigerator-Freezers; Final Rule

47535

 EE-RM-97-118 COMMENT 02
47536 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

DEPARTMENT OF ENERGY concerns the testing aspect of this over the condenser/compressor of a

program. EPCA, § 323, 42 U.S.C. 6293. refrigerator would reduce energy

Office of Energy Efficiency and The purpose of the test procedures is to consumption of the refrigerator. ESE

Renewable Energy produce test results that measure energy explained that the existing test

efficiency, energy use, water use (in the procedures address only a closed system 10 CFR Part 430 case of showerheads, faucets, water without the possibility of transfer of

RIN 1904-AA93 closets and urinals), or estimated annual exterior air cooler than the ambient

operating cost of a covered product room temperature.

Energy Conservation Program for during a representative average use While ESE's letter was submitted as a

Consumer Products: Test Procedures cycle or period of use. The test petition for waiver, the Department

for Externally Vented Refrigerators and procedures shall not be unduly concluded that its waiver process was

Refrigerator-Freezers burdensome to conduct. 42 U.S.C. not appropriate because waivers apply

6293(b)(3). One hundred and eighty to "basic models," and no models are AGENCY: Office of Energy Efficiency and days after a test procedure for a product currently being manufactured

Renewable Energy, Department of is adopted, no manufacturer may make incorporating this invention, nor is the

Energy. representations with respect to energy invention being produced for

ACTION: Final rule. use, efficiency or water use of such retrofitting. Therefore, the Department

SUMMARY: The Department of Energy product, or the cost of energy consumed published ESE's letter and issued a (Department or DOE) today promulgates by such product, except as reflected in Notice of Inquiry inviting public

test procedures for measuring the energy tests conducted according to the DOE comment on several issues relating to

tconsumption of an externally ented procedure. 42 U.S.C. 6293(c)(2). The externally vented refrigerators. 60 FR

consumpn of ane y v d Department, with assistance from the 37603, 37604 (uly 21, 1995). No public refrigerator and externally vented National Institute of Standards and comments were received in response to

refrigerator-freezer, a technological Technology, may amend or establish this Notice of Inquiry.

innovation c s ot coew test procedures, as appropriate, for On November 13, 1995, acting upon existing test procedures. Today's final new test procedures, as appropriate, for existing test procedures. Todays final any covered product. the Department's suggestion, ESE

rule does not change the test procedures Test procedures promulgated by DOE submitted a draft of proposed

applicable to refrigerator and appear at 10 CFR Part 430, Subpart B. amendments to the test procedures for

refrigerator-freezer designs without The "Uniform Test Method for refrigerators and refrigerator-freezers.

external venting. Measuring the Energy Consumption of The Department referred this submittal

EFFECTIVE DATE: October 9, 1997. Electric Refrigerators and Electric to the National Institute of Standards

FOR FURTHER INFORMATION CONTACT: Refrigerator-Freezers" appears at and Technology (NIST). NIST, the

Appendix Al to Subpart B. Department and ESE representatives Michael G. Raymond, U.S. Department Section 323(e) of the Act requires extensively discussed the requirements of Energy, Energy Efficiency and DOE to determine to what extent, if any, for test procedures for externally vented

Renewable Energy, Mail Station EE- a proposed test procedure would alter refrigerators and refrigerator-freezers.

43, Forrestal Building, 1000 the measured energy efficiency, On April 8, 1997, DOE published a Independence Avenue, SW, measured energy use or measured water Notice of Proposed Rulemaking (NOPR),

Washington, D.C., 20585-0121, (202) use of any covered product as to amend the test procedures for

586-9611 determined under the existing test refrigerators and refrigerator-freezers. 62

Eugene Margolis, Esq., U.S. Department procedure. If DOE determines that an FR 16739. DOE proposed to add test

of Energy, Office of General Counsel, amended test procedure would alter the procedure amendments specific to

Mail Station GC-72, Forrestal measured efficiency or measured use of externally vented refrigerators and

Building, 1000 Independence Avenue, a covered product, DOE is required to externally vented refrigerator-freezers.

SW, Washington, D.C. 20585-0103, amend the applicable energy The current test procedures for

(202) 586-9507 conservation standard accordingly. In refrigerators and refrigerator-freezers,

SUPPLEMENTARY INFORMATION: determining the amended energy found at 10 CFR Part 430, Appendix Al

conservation standard, DOE is required of Subpart B, do not address testing of

I. Introduction to measure the energy efficiency or externally vented refrigerators and

A. Authority energy use of a representative sample of refrigerator-freezers. The existing test

rt B f Tit I oEnerg Pi covered products that minimally procedures apply to a refrigerator Part B of Title III of the Energy Policy standard The system to which cool outside air cannot and Conservation Act of 1975, Public comply with the existing standard. The system to which cool outside air cannot

Law 94-163, as amended, established average energy use of this representative be introduced for purposes of heat

Law 94-163 as amended etabsample, determined under the amended transfer. Externally vented refrigerators

the Energy Conservation Program for test procedure, constitutes the amended would be designed to permit outside air

ConsumeroieT Products other than standard. EPCA, § 323(e) (2), 42 U.S.C. to be introduced across the refrigerator's Automobiles (Program).' The products 6293(e)(2). condenser and compressor and, in some currently subject to this Program cases, throughout the walls of the

(referred to hereafter as "covered B. Background refrigerator. The introduction of outside

products") include electric refrigerators On March 14, 1995, Edward Schulak air at temperatures lower than the

and electric refrigerator-freezers. Equities, Inc. ("ESE") submitted a letter ambient room air temperature permits Under the Act, the Program consists to the Department regarding the more efficient heat transfer, potentially

essentially of three parts: testing, inapplicability of existing test resulting in energy savings.

labeling, and the Federal energy procedures in Appendix Al to The Department has therefore revised

conservation standards. This final rule externally vented refrigerators. ESE the test procedures to include

submitted a description of an externally provisions tailored to measuring the

Part B of Title II of Energy Policy and vented refrigerator from a recently energy consumption of externally Conservation Act, as amended, is referred to in this

final rule as "EPCA" or the "Act" Part B of Title granted patent. ESE claimed that vented refrigerators and refrigeratorIII is codified at 42 U.S.C. 6291-6309. allowing cooler outside air to be passed freezers. These provisions add to, rather

 EE-RM-97-118 COMMENT 02
Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47537

than replace, the existing test amends the test procedures applicable consumption of any exterior air fan that

procedures, which remain fully to electric refrigerators and electric draws air to the refrigerator cabinet will

applicable to both externally vented refrigerator-freezers (10 CFR Part 430, be included in the total energy

vented refrigerators and refrigerator- Subpart B, Appendix Al), as follows: consumption measurements specified in

freezers and refrigerators and 1. Definitions and applicability of section 5.2.1.

refrigerator-freezers that are not amended test procedures. The 2. Exterior air source. The Department

externally vented. The amendments Department defines "externally vented recognizes that actual testing should

provide a method for accurately refrigerator or refrigerator-freezer" as a take place under conditions of variable

measuring the energy consumption of refrigerator or refrigerator-freezer with exterior air temperatures and, therefore,

an enclosed, externally vented an enclosed condenser or an enclosed requires that prescribed test conditions

refrigerator or refrigerator-freezer unit condenser/compressor compartment, include the provision of an external air

and take account of design features (e.g., and a set of air ducts for transferring source that provides air at adjustable

enclosed condenser, outside air exterior air from outside the building temperature and pressure capabilities

conduits, dampers) peculiar to an envelope into, through, and out of the (section 2.6). The test procedures

externally vented refrigerator or refrigerator or refrigerator-freezer prescribe the location of temperature

refrigerator-freezer that circulates condenser or condenser/compressor sensors for measuring the air

outside air around its condenser. With compartment (section 1.12). Energy temperature at the inlet to the

these amendments, the test procedures consumption savings from an externally condenser/compressor compartment

provide a basis for making comparable vented refrigerator or refrigerator-freezer (s e c t i

o n 26 .2). A ir temperature will also

measurements of energy consumption should be achievable for outside air be measured at the exterior air source.

for both externally vented ventedtemperatures between 60 °F and 80 °F Temperature measurements are to be

refrigerators and refrigerator-freezers Above 80 °F outside air may be warmermade at prescribed intervals.

and refrigerators and refrigerator- Above3. Air ducts. Externally vented

freezers that are not externally vented tha n a m bi e n t roo m airmaking h e a t refrigerators and refrigerator/freezers

More information about these test t ra n sf er n t h e w ro n g direction for depend upon air ducts to transfer

procedure amendments may be found ine gy savings. Below 60 F, outsl

de alr exterior air to the refrigerator cabinet.

the NOPR. 62 FR 16739 (April 8, 1997). may too cool for optimal operation of Rather than specifying the length,

Today's rule amends the testthe unit. The amendments to the test diameter, shape and material of the

procedures for electric refrigerators and procedures are generally predicated duct, the Department specifies air

electric refrigerator-freezers appearing upon a design that permits the pressure requirements as a uniform test

in 10 CFR Part 430, Subpart B, exclusion and/or mixing of outside air condition (section 2.6.3). Specifically,

Appendix Al by: (1) adding a definition that is either above 80 °F or below 60 the test procedures require exterior air

of externally vented refrigerators and F. (In the case that the mixing control pressure at the inlet to the refrigerator

refrigerator-freezers to which the is not able to maintain an inlet unit be maintained at a negative

revisions are applicable, (2) prescribing temperature of 60 'F, section 5.4.2.4 is pressure of 0.20" ± 0.05" water column

test conditions for externally vented invoked, and energy performance with (62 Pa ± 12.5 Pa). The test procedures

refrigerators and refrigerator-freezers, (3) inlet temperatures of 50 °F and 30 °F are also specify location distances for the

specifying energy consumption measured.) Accordingly, the pressure sensors, relative to the exterior

measurement tests for externally vented amendments to the test procedures will air source (i.e., the inlet to the building

refrigerators and refrigerator-freezers, apply only under conditions where the envelope) and to the condenser inlet.

and (4) including calculation methods externally vented refrigerator or 4. Applicability of general test method

for deriving results from test refrigerator-freezer design is capable of conditions. The amendments to the test

measurements. mixing the exterior air drawn in from procedures are not intended to supplant

These test procedure amendments outside the building envelope with the existing test methods applicable to all

apply only to this product design and ambient room air. The modification other refrigerators and refrigeratordo not apply to existing product designs includes thermostatically controlled freezers. Accordingly, the amendments

of refrigerators and refrigerator-freezers dampers or controls that: (1) enable the provide that, except as expressly

without this feature. Existing test proper mixing of outside and ambient modified, the test conditions and

procedures for non-externally vented room air when the outside air specifications included in the existing

refrigerators and refrigerator-freezers temperature is lower than 60 °F, and (2) test procedures also apply to externally

remain unchanged. The energy exclude outside air warmer than 80 °F, vented refrigerators and refrigeratorconservation standards for refrigerators or warmer than room air temperature freezers (section 5.4).

and refrigerator-freezers are unaffected (section 1.12). Externally vented units 5. Energy consumption correction

by the adoption or use of the new test could have temperature controls that factor for test measurements. The

procedures because the new test exclude outside air either at a pre-set Department prescribes a series of

procedure amendments do not apply to temperature no lower than 80 °F or formulas for determining energy

any refrigerator or refrigerator-freezer when the outside air temperature consumption from test measurements.

that is currently manufactured. exceeds the ambient room air First, the Department recognizes that

temperature (section 1.12). The test energy consumption of any refrigerator II. Discussion procedures require that prior to will be different with and without door

In response to the April 8, 1997, conducting energy consumption tests, openings. Under the existing test

NOPR, the Department received one the operability of thermostatic controls procedure, refrigerators are tested at 90

comment, which was from Mark L. be verified (section 5.4.1). All tests must °F without door openings to simulate

Perlis, counsel to ESE, urging the generally be conducted with the the energy consumption they would

adoption of the test procedures in the thermostatic controls operable. A have at normal room temperature with

NOPR. The Department believes it is special rule is provided for testing door openings. Normal room

appropriate to proceed to a final rule energy consumption when mixing temperature for the refrigerator test

promulgating the test procedures as controls do not operate properly procedure is considered to be 80 °F, the

proposed. The Department today (section 5.4.2.4). The energy typical temperature of the ambient air

 EE-RM-97-118 COMMENT 02
47538 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

surrounding the refrigerator's Region I. Externally vented refrigerators a testing procedure for a new design

condenser. An externally vented need only be tested at 90 °F and 60 °F, feature of refrigerators and refrigeratorrefrigerator will show an artificially low and from such measurements, freezers. DOE accordingly certifies that

energy consumption compared to an application of the correction factor, and this final rule will not have a significant

unvented refrigerator when tested at 90 application of the energy profile economic impact on a substantial

°F room air temperature, because 90 °F equation, the unit's average per cycle number of small entities and that

is warmer than normal room energy consumption can be determined preparation of a regulatory flexibility

temperature. The Department therefore for the nation as a whole and for each analysis is not warranted.

requires calculation of a correction of the four regions of the country. . " As t

factor for each basic model of externally 7. Reporting requirements. Assessment eview

vented refrigerator. The correction factor Refrigerators and refrigerator-freezers It has been determined pursuant to

is the ratio of the energy consumption are required to report annual energy Executive Order 12630 (52 FR 8859,

of an externally vented refrigerator (with consumption. For externally vented March 18, 1988) that this final rule will

external venting disabled) at 90 °F inlet products, the annual energy not result in any takings which might

air temperature to the energy consumption will depend on climate. require compensation under the Fifth

consumption of the unit at 80 °F inlet The annual energy consumption Amendment to the United States

air temperature (sections 5.4.2.1 and reported for externally vented products Constitution.

6.3.1). shall be the national average annual V. F r 6. Energy consumption test energy use. Separate reporting of erasm ev

measurements and calculations. Based regional energy use is not required. Executive Order 12612 (52 FR 41685,

on analysis by NIST and its derivation , October 30, 1987) requires that

of an algebraic equation for determining I Re v l e w Under the Nationalregulations or rules be reviewed for any

energy consumption over a range of Environmental Policy Act of 1969 substantial direct effects on States, on

outside air temperatures, the In this rule, the Department the relationship between the Federal

Department has determined that test promulgates amendments to the test Government and the States, or on the

measurements of energy consumption procedures for refrigerators and distribution of power and

need be taken at only two outside air refrigerator-freezers to include responsibilities among various levels of

temperatures, 90 °F and 60 °F (sections externally vented refrigerators and Government. If there are sufficient

5.4.2.2 and 5.4.2.3). If the outside air refrigerator-freezers. The Department substantial direct effects, the Executive

temperature is not in this range, mixing has determined that this rule is covered Order 12612 requires the preparation of

controls and dampers will keep the under the Categorical Exclusion found a Federalism assessment to be used in

condenser inlet temperature within the at paragraph A.5 of Appendix A to decisions by senior policy makers in

range. Accordingly, the Department Subpart D, 10 CFR Part 1021, which promulgating or implementing the

prescribes an energy profile equation applies to the amendment of an existing regulation.

that will allow for the interpolation of rule that does not change the This final rule will not alter the

energy consumption at outside air environmental effect of the rule. distribution of authority and

temperatures within this range (section Implementation of this final rule will responsibility to regulate in this area.

6.3.4). The parameters of the energy not affect the quality or distribution of This rule will only revise a currently

profile equation are determined for each energy usage and therefore will not applicable DOE test procedure to

basic model of externally vented result in any environmental impacts. accommodate a technological

refrigerator that is tested, based on the Accordingly, neither an environmental development in the manufacture of

measured energy consumption during assessment nor an environmental refrigerators and refrigerator-freezers.

testing at 90 °F and 60 °F. impact statement is required. Accordingly, DOE has determined that

Once the parameters of the energy preparation of a federalism assessment

profile equation are determined, the test IV. Regulatory Review is unnecessary.

procedures provide a basis for Today's final rule has been

calculating energy consumption at determined not to be a "significant VIII. Paperwork Reduction Act Review

various temperatures. Because regulatory action" under Executive This rule contains no new collections

temperatures vary across the country, Order 12866, "Regulatory Planning and of information under the Paperwork

throughout a day, and throughout the Review," (58 FR 51735, October 4, Reduction Act, 44 U.S.C. 3501 et seq.

year, the test procedures specify an 1993). Accordingly, today's action was IX Review Under Unfunded Mandates

energy consumption formula that not subject to review under the Refom t of 199

determines a unit's total energy Executive Order by the Office ofer Act 1

consumption based on weighted Information and Regulatory Affairs. Section 202 of the Unfunded

averaging of the unit's energy Mandates Reform Act of 1995

consumption at different exterior air V Regulatory Flexibility Review("Unfunded Mandates Act") requires

temperatures. The test procedures This rule has been reviewed under the that the Department prepare a budgetary

provide weighting factors for a national Regulatory Flexibility Act, Pub. L. 96- impact statement before promulgating a

average energy consumption (section 354 (42 U.S.C. 601-612) which requires rule that includes a Federal mandate

6.3.6) and weighting factors for four preparation of a regulatory flexibility that may result in expenditure by state,

different regions of the country, which analysis for any regulation that will local, and tribal governments, in the

are identified on a map. This procedure have a significant economic impact on aggregate, or by the private sector, of

was based on the test procedure for heat a substantial number of small entities. $100 million or more in any one year.

pumps, for which energy savings are This rule would not have significant The budgetary impact statement must

also a function of climate. The regional economic impact on manufacturers of include: (1) identification of the Federal

map is the same as that used in the heat externally vented refrigerators and law under which the rule is

pump test procedure, except Regions I refrigerator-freezers (there are presently promulgated: (2) a qualitative and

and II from the heat pump test no such manufacturers). This rule quantitative assessment of anticipated

procedure are combined and called modifies the testing methods to provide costs and benefits of the Federal

 EE-RM-97-118 COMMENT 02
Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47539

mandate and an analysis of the extent to Executive Order and determined that, to kilowatt-hour as provided by the

which such costs to state, local, and the extent permitted by law, they meet Secretary, the resulting product then

tribal governments may be paid with the requirements of those standards. being rounded off to the nearest dollar

Federal financial assistance; (3) if .. per year.

feasible, estimates of the future X Congressional Notficaton (8) The estimated regional annual

compliance costs and of any Consistent with the Small Business operating cost for externally vented

disproportionate budgetary effects the Regulatory Enforcement Act of 1996, electric refrigerators and externally

mandate has on particular regions, DOE will submit to Congress a report vented electric refrigerator-freezers with

communities, non-Federal units of regarding the issuance of today's final an anti-sweat heater switch shall be the

government, or sectors of the economy; rule prior to the effective date set forth product of the following three factors:

(4) if feasible, estimates of the effect on at the outset of this notice. The report (i) The representative average-use

the national economy; and (5) a will note the Office of Management and cycle of 365 cycles per year,

description of the Department's prior Budget's determination that this rule (ii) Half the sum of the average perconsultation with elected does not constitute a "major rule" under cycle energy consumption for the

representatives of state, local, and tribal that Act. 5 U.S.C. 801, 804. standard cycle and the regional average

governments and a summary and List of Subjects in 10 R Part 430 per-cycle energy consumption for a test

evaluation of the comments and cycle with the anti-sweat heater switch concerns presented. Administrative practice and in the position set at the factory just The Department has determined that procedure, Energy conservation, prior to shipping, each in kilowatt-hours

this action does not include a Federal Household appliances. per cycle, determined according to 6.3.7

mandate that may result in estimated Issued in Washington, D.C., on August 1, of appendix Al of this subpart, and

costs of $100 million or more to state, 1997. (iii) The representative average unit

local or to tribal governments in the Joseph J. Romm, cost of electricity in dollars per

aggregate or to the private sector. Secretary Ener iciency kilowatt-hour as provided by the

Therefore, the requirements of Sections ng Assistant Secretary, Energy Efiency Therefore the requirements of Sections and Renewable Energy. Secretary, the resulting product then 203 and 204 of the Unfunded Mandates being rounded off to the nearest dollar

Act do not apply to this action. or the reasons set forth in the

preamble, part 430 of chapter II of title per year. X. Review Under Executive Order 10, Code of Federal Regulations is (9) The estimated regional annual

12988, "Civil Justice Reform" amended as follows:operating cost for any other specified

With respect to the review of existing cycle for externally vented electric

regulations and the promulgation of PART 430-ENERGY CONSERVATION refrigerators and externally vented

new regulations, Section 3(a) of PROGRAM FOR CONSUMER electric refrigerator-freezers shall be the

Executive Order 12988, "Civil Justice PRODUCTS product of the following three factors:

Reform," 61 FR 4729 (February 7, 1996), 1. The authority citation for part 430 cycle of 365 cycles per year, imposes on executive agencies the continues to read as follows: (ii) The regional average per-cycle general duty to adhere to the following

requirements: (1) eliminate drafting Authority: 42 U.S.C. 6291-6309. energy consumption for the specified

errors and ambiguity; (2) write 2. Section 430.23(a) is amended by le,tin kilowatt-hours per cycle,

regulations to minimize litigation; and adding the parenthetical phrase "(6.3.6 determned according to 67 of

(3) provide a clear legal standard for for externally vented units)" after appendix Al of this subpart, and

affected conduct rather than a general "determined according to 6.2" in the (iii) The representative average unit

standard and promote simplification following locations: paragraph (a)(l)(ii) cost of electricity n dollars per

and burden reduction. With regard to paragraph (a)(2)(ii); paragraph (a)(3)(ii); kilowatt-hour as provided by the

the review required by Section 3(a), paragraph (a)(4)(i)(B); paragraph Secretary, the resulting product then

Section 3(b) of the Executive Order (a)(4)(ii)(B); paragraph (a)(5). being rounded off to the nearest dollar

specifically requires that Executive 3. Section 430.23(a) is further per year.

agencies make every reasonable effort to amended by adding paragraphs (a) (7), * *

ensure that the regulation: (1) clearly (a)(8), and (a)(9) to read as follows: 4. Section 1 of Appendix Al to

specifies the preemptive effect, if any; subpart B is amended by adding the

(2) clearly specifies any effect on §430.23 Test proceduresformeasuresof following definition 1.12:

existing Federal law or regulation; (3) energy consumption.Appendix A to Subpart B of Part 430-

provide a clear legal standard for (a) * * * Appendix Al to Subpart B of Part 430

affected conduct while promoting (7) The estimated regional annual Uniform Test Method for Measuring the

simplification and burden reduction; (4) operating cost for externally vented Energ ons ption of Etric

specifies the retroactive effect, if any; (5) electric refrigerators and externallyrs lectic Refrigeratoradequately defines key terms; and (6) vented electric refrigerator-freezers

addresses other important issues without an anti-sweat heater switch 1. Definitions

affecting clarity and general shall be the product of the following * * * * *

draftsmanship under any guidelines three factors: 1.12 "Externally vented refrigerator or

issued by the Attorney General. Section (i) The representative average-use refrigerator-freezer" means an electric

3(c) of the Executive Order requires cycle of 365 cycles per year, refrigerator or electric refrigerator-freezer

Executive agencies to review regulations (ii) The regional average per-cycle that: has an enclosed condenser or an in light of applicable standards Section energy consumption for the standard enclosed condenser/compressor

3(a) and Section 3(b) to determine cycle in kilowatt-hours per cycle, compartment and a set of air ducts for transferring the exterior air from outside the

whether they are met or it is determined according to 6.3.7 of building envelope into, through and out of

unreasonable to meet one or more of appendix Al of this subpart and the refrigerator or refrigerator-freezer cabinet:

them. DOE reviewed today's rulemaking (iii) The representative average unit is capable of mixing exterior air with the

under the standards of Section 3 of the cost of electricity in dollars per room air before discharging into, through,

 EE-RM-97-118 COMMENT 02
47540 Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations

and out of the condenser or condenser/ measurements for the externally vented consumption measurements for the

compressor compartment; includes refrigerator or refrigerator-freezer shall be externally vented refrigerator or refrigeratorthermostatically controlled dampers or made in accordance with the requirements of freezer shall be calculated in accordance with

controls that enable the mixing of the exterior other sections of this appendix, except as the requirements of this Appendix, as

and room air at low outdoor temperatures, modified in this section 5.4 or other sections modified in sections 6.3.1-6.3.7.

and the exclusion of exterior air when the expressly applicable to externally vented 6.3.1 Correction factor. A correction

outdoor air temperature is above 80 "F or the refrigerators or refrigerator-freezers. factor, K, shall be calculated as:

room air temperature; and may have a 5.4.1 Operability of thermostatic and K = ecw/ecgo

thermostatically actuated exterior air fan. mixing of air controls. Prior to conducting

5. Section 2 of Appendix Al is energy consumption tests, the operability of where ec 9o and ecst - the energy 5. Section 2 of Appendix Al isthermostatic controls that permit the mixing consumption test results as determined

amended by adding the following new of under 5.4.2.1. of exterior and ambient air when exterior air

sections 2.6 through 2.6.3: temperatures are less than 60 F must be 6.3.2 Combining test results of different

2. Test Conditions verified. The operability of such controls settings of compartment temperature 2. Test Conditions shall be verified by operating the unit under controls. For a given setting of the anti-sweat

ambient air temperature of 90 °F and exterior heater, follow the calculation procedures of

2.6 Exterior air for externally vented air temperature of 45 °F. If the inlet air 62 to combine the test results for energy

refrigerator or refrigerator-freezer. An exterior entering the condenser or condenser/ consumption of the unit at different

air source shall be provided with adjustable compressor compartment is maintained at 60 temperature control settings for each

temperature and pressure capabilities. The oF, plus or minus three degrees, energy condenser inlet air temperature tested under

exterior air temperature shall be adjustable consumption of the unit shall be measured 5.4.2.2, 5.4.2.3, and 5.4.2.4, where applicable,

from 35±1 "F (1.7±0.6 °C) to 90±1 °F (32.2+0.6 under 5.4.2.2 and 5.4.2.3. If the inlet air (ego)i, (eo)i, (eso),, and (e3o)i. The combined

"C). entering the condenser or condenser/ values are Ego, E~O, c5O, and 30o. where

2.6.1 Air duct. The exterior air shall pass compressor compartment is not maintained applicable, in kWh/day.

from the exterior air source to the test unit at 60 °F, plus or minus three degrees, energy 6.3.3 Energy consumption corrections.

through an insulated air duct. consumption of the unit shall also be For a given setting of the anti-sweat heater,

2.6.2 Air temperature measurement. The measured under 5.4.2.4. the energy consumptions £9o, eo. 5so, and £30

air temperature entering the condenser or 5.4.2 Energy consumption tests. calculated in 6.3.2 shall be adjusted by

condenser/compressor compartment shall be 5.4.2.1 Correction factor test. To enable multiplying the correction factor K to obtain

maintained to ±3 "F (1.7 "C) during the calculation of a correction factor, K, two full the corrected energy consumptions per day,

stabilization and test periods and shall be cycle tests shall be conducted to measure in kWh/day:

measured at the inlet point of the condenser energy consumption of the unit with air E9 0 = K x Ego, or condenser/compressor compartment mixing controls disabled and the condenser Eo6 = K x eo ("condenser inlet"). Temperature inlet air temperatures set at 90 "F (32.2 "C) E5o = K x Eo, and

measurements shall be taken from at least and 80 "F (26.7 °C). Both tests shall be E3 0 = K x 30

three temperature sensors or one sensor per conducted with all compartment temperature where, 4 square inches of the air duct cross sectional controls set at the position midway between K is determined under section 6.3.1, and

area, whichever is greater, and shall be their warmest and coldest settings and thed 1, and

averaged. For a unit that has a condenser air anti-sweat heater switch off. Record the e , e50o and £3( are determined under

fan, a minimum of three temperature sensors energy consumptions ecgo and ec 8o. in kWh/ section 6.3.2.

at the condenser fan discharge shall be day. 6.3.4 Energy profile equation. For a given

required. Temperature sensors shall be 5.4.2.2 Energy consumption at 90 "F. The setting of the anti-sweat heater, the energy

arranged to be at the centers of equally unit shall be tested at 90 °F (32.2 "C) exterior consumption Ex, in kWh/day, at a specific

divided cross sectional areas. The exterior air air temperature to record the energy exterior air temperature between 80 "F (26.7

temperature, at its source, shall be measured consumptions (ego), in kWh/day. For a given "C) and 60 "F (26.7 °C) shall be calculated by

and maintained to ±1 "F (0.6 °C) during the setting of the anti-sweat heater, i corresponds the following equation:

test period. The temperature measuring to each of the two states of the compartment Ex = a + bTx,

devices shall have an error not greater than temperature control positions.where

±0.5 "F (±0.3 "C). Measurements of the air 5.4.2.3 Energy consumption at 60 "F. The

temperature during the test period shall be unit shall be tested at 60 "F (26.7 "C) exterior Tx = exterior air temperature in 'F;

taken at regular intervals not to exceed four air a = 3E6

o- 2Ego, in kWh/day;

minutes. consumptions (ego)i in kWh/day. For a given b = (EFo- Ea)/30, in kWh/day per "F.

2.6.3 Exterior air static pressure. The setting of the anti-sweat heater, i corresponds 6.3.5 Energy consumption at 80 "F (26.7

exterior air static pressure at the inlet point to each of the two states of the compartment °C), 75 °F (23.9 "C) and 65 "F (18.3 °C). For

of the unit shall be adjusted to maintain a temperature control positions, a given setting of the anti-sweat heater,

negative pressure of 0.20"±+0.05" water 5.4.2.4 Energy consumption if mixing calculate the energy consumptions at 80 °F

column (62 Pa±12.5 Pa) for all air flow rates controls do not operate properly. If the (26.7 "C), 75 "F (23.9 "C) and 65 °F (18.3 "C)

supplied to the unit. The pressure sensor operability of temperature and mixing exterior air temperatures, Eso, E75 and E65.

shall be located on a straight duct with a controls has not been verified as required respectively, in kWh/day, using the equation

distance of at least 7.5 times the diameter of under 5.4.1, the unit shall be tested at 50 "F in 6.3.4.

the duct upstream and a distance of at least (10.0 "C) and 30 "F (- 1.1 "C) exterior air 6.3.6 National average per cycle energy

3 times the diameter of the duct downstream, temperatures to record the energy consumption. For a given setting of the antiThere shall be four static pressure taps at 90" consumptions (es-o)i and (e30o). For a given sweat heater, calculate the national average

angles apart. The four pressures shall be setting of the anti-sweat heater, i corresponds energy consumption, EN, in kWh/day, using

averaged by interconnecting the four pressure to each of the two states of the compartment one of the following equations:

taps. The air pressure measuring instrument temperature control positions. EN = 0.523 x E6o + 0.165 x E65 + 0.181 x E75

shall have an error not greater than 0.01" 7. Section 6 of Appendix Al is + 0.131 x Eo, for units not tested under

water column (2.5 Pa). amended by adding the following new 5.4.2.4,

6. Section 5 of Appendix Al issections 6.3 through 6.3.7, table A and EN = 0.257 x E3 + 0.266 x E., + 0. 165 x E3.

amended by adding the following new figure 1: tested under 5.4.2.4,

sections 5.4 through 5.4.2.4: 6. Calculation of Derived Results From Test where,

5. Test Measurements Measurements E30, Eo, and E6 0 are defined in 6.3.3,

* * * * * * * * * * E65, E75, and Ego are defined in 6.3.5, and

5.4 Externally vented refrigerator or 6.3 Externally vented refrigerator or the coefficients are weather associated

refrigerator-freezer units. All test refrigerator-freezers. Per-cycle energy weighting factors.

 EE-RM-97-118 COMMENT 02
Federal Register / Vol. 62, No. 174 / Tuesday, September 9, 1997 / Rules and Regulations 47541

6.3.7 Regional average per cycle energy the following equations and the coefficients where:

consumption. If regional average per cycle in the table A: E3o, E50 , and E60 are defined in 6.3.3,

energy consumption is required to be ER = a, x Eo6 + c x E65 + d x E75 + e x E8O, E6 5, E75 , and E8o are defined in 6.3.5, and

calculated, for a given setting of the anti- for a unit that is not required to be tested a,, a, b, c, d e are weather associated

sweat heater, calculate the regional average under 5.4.2.4, weighting factors for the Regions, as

per cycle energy consumption, ER, in kWh/ ER = a x E30 + b x E5o + c X E65 + d x E75 specified in Table A:

day, for the regions in figure 1 using one of + e x E8o, for a unit tested under 5.4.2.4,

TABLE A.-COEFFICIENTS FOR CALCULATING REGIONAL AVERAGE PER CYCLE ENERGY CONSUMPTION

[Weighting Factors]

Regions a, a b c d e

I ..................................................................................................................................... 0.282 0.039 0.244 0.194 0.326 0.198

II ........................................................................................................................................ 0.486 0.194 0.293 0.191 0.193 0.129

III ....................................................................................................................................... 0.584 0.302 0.282 0.178 0.159 0.079

IV ....................................................................................................................................... 0.664 0.420 0.244 0.161 0.121 0.055

BILLING CODE 6450-01-P

FIGURE 1. Weather Regions for the United States

IV IV I

wO NJ

Alaska Region IV

Hawaii Region I

§ 430.62 [Amended]

8. Section 430.62(a)(2) is amended by inserting after "(for refrigerators, refrigerator-freezers, and freezers)," in the

first sentence, the following: "the national average annual energy use and adjusted volume (for externally vented refrigerators and refrigerator-freezers),".

[FR Doc. 97-22379 Filed 9-08-97; 8:45 am]

BILLING CODE 6450-01-C

 EE-RM-97-118 COMMENT 02