## Monday July 14, 1980



# Part V


# Department of Energy

Office of Energy Conservation and Solar Energy

Energy Conservation Program for Consumer Products; Proposed Test =Procedures for Electric Refrigerators, Electric Refrigerator-Freezers, and Freezers

### 47396 Federal 

### Register 

## I Vol 45, No. 136 

## I Monday. July 14, 1980 

## I Proposed Rules

f'II;PARTMENT OF ENERGY



### .Ice of Energy Conservation and )larEnergy



### -10 CFR Part

### 430
[Docket No. CAS-RM-8O-118J
Energy Conservation Program for Consumer 

### Products; Proposed Rulemaklng and Public Hearing 'RegaJ:dlng Test Procedures for 

### Electric Refrigerators, 

### Electric Refrlgerator..freezers, and Freezers

AGENCY: Department ofEnergy.

ACTION: Proposed rule.

SUMMARY: The Department ofEnergy hereby proposes to amend its test procedures for refrigerators. refrigeratorfreezers, andfreezers. These test procedures ate part ofthe energy conservation program for consumer products established pursuant to the Energy Policy and Conservation Act.,as amended by the National Energy Conservation Policy Act. Among other
program elements. the legislation requires that standard methods of testing be prescribed for covered products.

DATES: Written comments in response to this notice by September 12. 1980;

'quests to speakby Aug. 21.1980;

.tements by Sept. 5. 1980; public uearing to be held on Sept. 9. 1980. Speakers to be notified by Aug. 27.1980.

ADDRESSES: Public hearing to be held at: Room 3000A Federal Building. Department ofEnergy. 12th and PennsyvlaniaAvenue. N.W•• Washington. D.C.

Comments. requests to speak at the hearing and statements to: Ms. C. Snipes. U.S. Department ofEnergy. Office ofConservation and Solar Energy. Hearings and Dockets. Mail Stop 6B-025. 1000 Independence Ave., S.W.• Washington. D.C. 20585.

FOR FURTHER INFORMATION CONTACT: James A. Smith, U.S. Department of

Energy. 'Office ofConservation and SolarEnergy. Division ofBuildings and Community Systems. Consumer Products Efficiency Branch. Room GH-065. Mail Station 6B-025.1000 Independence Ave. S.W.• Washington. D.C. 20585. (202) 252-9127. Carol 

### A. Snipes (Hearing Procedures).

U.S. Department ofEnergy. Office of Conservation and SolarEnergy. Office ofHearings andDockets. Mail Station 68-025. 1000 Independence Avenue, S.W.• Washington. D.C. 20585, (202) 252-9319.**~ne** Margolis. Esq.• U.S. Department 

### JiEnergy. Office ofGeneral Counsel. Room 

### lJ.t...254. Mail Station 

### 8A-1.52. 2.000Independence Avenue.

## aw

.. Washington. D.C. 20585. (ZOZ) 

### 252-
9510.

SUPPLEMENTARY INFORMATION:


### 'A.Background

On October 1. 1977. the nepartment

### of Energy (DOE) assumed the authority of the Federal Energy Administration (PEA) for the energy conservation
program for consumerproducts. 

### under Section 301 ofthe Department of.Energy OrganizationAct (DOE Act) 

### [Pub. 1..

### 95- 91). The energy conservationprogram for consumer products was establiahed by

### PEA pursuant toTitle

# m. PartB of the Energy Policy and Conaervation Act (Act) (Pub. 

### L. 94-163). SubBequently. the Act was amended by the National Energy ConservationPolicy Act (NECPA) (Pub. 

### L. 95-619}.Referencesin this notice to "the Act". orto sections of the Act. refer to the Energy 

### Policy and

. Conservation Act 

### as amended by NECPA. Section 323 (42 U.S.C. 8293) of the Actrequires that standard methods 

### DI testing be prescribed for covered products. Testprocedures appear at 10 

### CPR Part

### 430. Subpart B.

Test procedures were proposed for refrigerators. refrigerator-freezers. and freezers by notice issued April 21. 1977 (42 FR .21576. April 27. 1977) and a public hearing on the proposed test procedures

was held on June 14. 1977. Final test procedureswere prescribed on September 8. 1977 (42 FR 46140. September 14. 1977).

l)ub.sequentlY.8 Petition for Rulemakingwas submittedby the Association ofHome Applicance Manufacturers (AHAM). This petition requested that DOE examine shortened
testprocedures for electric refrigerators. refrigerator-freezers. and freezers. AHAM stated that its altemate test procedures were much less burdensome and would

### give results that would differ by less than four percent from those obtained under the existingDOEtest procedures. The National Bureau of Standards (NBS) has evaluated experimentally the testprocedures suggested by 

### AHAM along with 

### other

comments received directly from manufacturers and has recommended to DOE revised test procedures which incorporate many ofthe AHAM suggestions. On the basis ofthis evaluation and recommendation 

### by NBS. DOE is today proposing to amend the test procedures for electric refrigerators. refrigerator-freezera.and freezers as discussed below. 

### IS. Discussion (1)

### AHAM Petition (Single Control 

### Refrigerotors. Refrigerotor-Free:zers, l1lIdFreezers)

The currentDOE test procedures for refrigerators. refrigerator-freezers. and freezers with single temperature control devices specify that the units be tested for energy'consumption at the warmest. midpoint. and coldest temperature -positions ofthe control. After plotting an energy consumption vs. compartment temperature curve corresponding to these controlpositions. the energy consumptionfor the standardized freezer compartment temperatures 

### (0' F 

### forfreezers. 5° F for refrigeratorfreezers. and 15· F for refrigerators) is read from the graph. 

### AHAM proposed than an altemate test procedure be allowed whichrequires that the control be set such that energy consumption is 'measured at two rather than three freezer compartmenttemperatures. One
test is conductedby selecting a temperature control position such that the freezer compartment falls within 3' F above the standardizedfreezer compartment temperature. The other
test is conducted with the freezer temperature'within 3· F below the standardized freezer compartment temperature. These freezer temperatures and energy consumption values are plotted and are connected by straight lines. The energy consumption of the unit at-the standardized freezer compartment temperature (either 

### 0·, 5·.

or 15·F. dependingupon the class of product} is obtained from the graph.

NBS andDOE have analyzed this test procedure and have determined that a test which requires such careful selection of control positions could potentiallybe as burdensome as the existing procedure which requires three
test points. Any data taken when temperatures differ by more than 3·F from the specified temperature would have to be discarded and the test would have to be repeated with different control settings. This difficulty would be
most prevalent when independent laboratory technicians would have to

. guess correct control settings on products whose control characteristics

were unfamlliar to them.

The test procedure proposed today for single control**re~eration** products 

### will

neverrequire more than two control

,

-settings for a valid test. The procedure requires that the energy consumption first bemeasured with the control set at 

### the midpoint of the control range and that a second energy consumption value 

### be measured with the control set either

- .. t 

### the warmest orthe coldest setting so that wheneverpossible. the freezer

### Federal Register / Vol. 45. No. 136 / Monday. July 14. 1980 / Proposed Rules 47397

comparbnent temperatures bracket (i.e.•

one is above and one is below) the standardized freezer comparbnent temperature. Energy consumption values

are plotted vs. freezer temperature and the data points are connected by a straight line. The energy consumption of the test unit at the standardized freezer compartment temperature may be obtained from the graph. 

### (2)AHAMPetition (Multiple Control Rejrigerator--Freezers)

The existing DOE test procedure specifies thatmultiple control refrigerator-freezers be tested at each of the extreme positions ofthe controls (warm/warm, warm/cold. cold/warm, cold/cold) and that the energy consumption and freezer comparbnent temperature be plotted vs. fresh food compartment temperature. These points

are connected by straight lines to form envelopes. Test unit energy consumption is reported as the average ofthe two energy consumption values read from the graph at the 5' 

### F freezer

. compartment temperature. These tests

.are carried ont with the freezer loaded
to 75% ofits capacity with frozen food packages.

AHAM 

### proposed that multiple control frost-free refrigerator-freezers by allowed to be tested for energy consumption under the following conditions:

a. No load in the freezer !lompartmenl b. Freezer compartment temperatUres measured with weighted thermocouples

as specified in ANSI B38.1-1970.

c. Freezer comparbnent thermocouples located in positions that would normally be occupied by the thermocoupled test packages.

.

d. After thermal stabilization has been achieved, energy consumption is measured from the time the compressor begins operating after defrost to the similar time in the next defrost cycle with each control set at the midpoint of its range (m/m). If

### the midpoint control positions (m/m) result in an average freezer compartment temperature greater than 5°F. the primary and secondary controls are reset to their coldest positions (c/c). 

### If

### the midpoint control positions (m/m) result in an average freezer compartment temperature less than 5°F, the primary and secondary controls are reset at their warmest positions (w/w).

.

The resulting temperature and energy consumption values are plottea and the energy consumption ofthe unit is determined at the Sop 

### average freezer compartment temperature.

NBS carefully analyzed all four conditions ofthe AHAM-suggested procedure. The provision for no load in the freezer is a change from the present testprocedure which specifies no load in the fresh food comparbnent and a 75% freezer comparbnent load ofstandard sizedpackages offrozen food. The change was requested by industry to reduce the burdensomeness ofthe test related to selecting and maintaining the packages. constantlyrelocating them. arranging them in the freezer comparbnent under test, and assuring that the imbedded thermocouples are correctly positioned. The-load increases the length oftime 

### a test takes since a large thermal mass requires considerable time to reach equilibrium conditions. Industry has submitted data which shows 

### that there is no appreciable difference in the results of
tests with and without a load. The Canadian Standards AsSOl"jation has long been testing without a freezer comparbnent load and 

### has obtained results equivalent to those from the
current DOE testprocedure. NBS ran tests on refrigerator-freezerS both with and without loads to assure the acceptability ofthe proposal. The NBS
tests showed that as the load is presently specified, many different load arrangements can result when the same refrigerator freezer comparbnent is loaded, unloaded. then reloaded several times. The exact placement ofeach package cannot be specified. Thus. the placement ofthe firs! food packages affects the final arrangement ofthe remaining packages. the location ofthe thermocouples, and the total number of packages finally placed in the comparbnenl Conse'luently. the specified 75% load is actually a variable.

NBS has also found that air 

### circulation around the packages is a very importantparameter. An 

### air gap of 1h to llh inches (1.5 to 4 em) between the packages and the freezer walls is 

### specified and the use ofinsulating spacers is permitted to maintain this gap. Even with spacers, it 

### is very difficult to arrange the load packages in

a manner such tha.t the gap is maintained. Also. normal vibrations such as those causedby the compressor motor starting and stopping can cause the food packages to shift position and the air 

### gap to change. NBS concluded that tests with and without a load in the freezer comparbnent produced essentially the same test results when the load was arranged according to specifications. Blocking ofany ofthe air 

### gaps effects the results by producing different energy usage figures. The elimination ofthe test load should reduce not only burdensomeness but sbould also provide a much more standardized andrepeatable tesl Consequently, today's proposed rule does not require a load in the freezer comparbnent of automatic defrost refrigerator-freezers.

Since the proposed test procedure does not require a freezer comparbnent load for certain refrigerator-freezers. the existing method ofmeasuring freezer compartment temperatui:e must be modified since the temperature sensors

. are specified to be located in the load packages. AHAM 

### requested thatfreezer temperatures bemeasured in accordance with an existing industry method in which a thermal mass (with a heat capacity not to exceed that of20 grams ofwater) is attached to the temperature sensor. These sensors are then located in the freezer comparbnent in the positions previously occupied by the instrumented frozen food packages. NBS has determined that the thermal

mass of20 grams could be obtained with

a small containerofwater (less than an ounce). a large volume offoarn insulation. a metal sphere or a large 

### thin sheet ofmetal. etc. The physical dimensions ofthe thermal mass can affect the measured compartment temperature. particularly in the freezer compartment. A thermal mass is desirable on temperature sensors in the freezer section because ofthe large cyclic temperature variation and sharp changes which make temperature averaging difficult:Today's proposed rule requires the use ofweighted temperature sensors and specifies the thermal mass dimensionally. in order to reduce differences due to (1) the effects ofthe thermal mass on the air circulation in the compartment, (2) the locations ofthe sensors, and (3) the variation ofmeasured temperatures. The metallic material used and its thermal

·mass are not critical since neither actually affect the average temperature measured. Therefore, a broad dimensional tolerance is permitted and any metal material is allowed.

The revised control settings suggested by AHAM 

### (testing at the mid/mid and then either cold/cold or warm/warm positions), which reduce the refrigeratorfreezer testprocedure from a four-point
test to a two-point test, were evaluated by NBS. NBS confirmed that these control settings. in combination with no load in the freezer, did give test results which varied no more than 4 percent from the existing test procedure. Part of this variation may be due to inaccuracies in selecting the mid/mid posittlln on controls that have widely separated control setting markings and those with an even number of control markings such that none ofthe marks is
at the actual center position. Some of

### Federal Register 

## I Vol. 45, No. 136 / Mondtt July '14. 1.980 

## I Proposed Rules

these controls alsohave detents and. 'lirgedifferences in control settings can asult 

### by selecting a position (detent) on either side of the midpoint. Consequently. 

### today's proposed rule includes theAHAM-suggested two-point
test butrequires that the controls 

### be set at the midpoints even if detents have to be mechanically overridden. (a)

### AnotherTwo-Point Test Procedure

-One 

### industry member submitteddata
to NBS which indicated that a two-point
testprocedure using the cold

## Icold and warm/warm settings rather than a mid/ mid setting would produce more consistent results with less deviation from test 

### to test. While 

### this conclusion
may 

### be true for 

### this manufacturer. it
maynot hold tnle for all manufacturers. The use ofextreme positions can produce erroneous results if·the efficiency 

### ofthe unit tested varies noticeably with the duration of compressor operating cycles.

. Consequently. this test procedure was not included in

### the proposed rule. 

### '(4)All-Refrigerator

A new refriseration product. whi.cb the present test procedures do not adequately.evaluate. is now available in the marketplace.The "all-refrigerator" has a 

### very small freezer compartment for frozen loads and is not designed to 'Ilaintain temperatures much below

### the ,2°p'temperature needed to make the
store ice cubes.Today's proposedrule contains a definition of the "allrefrigerator" whicb specifies that its

.. freezer compartment can be no larger than 0.25 cubicfeet. Since the freezer temperature ofan all-refriger&tor 

### is not

a criticalparameter. a new test procedure is proposed which calculates
energy consumption for this product based upon the temperature of the fresh food compartment. This calculation

. _ procedure employs two formulas. One formula determines the per-cycle energy pse at 38.00P (3.3.°C) in the fresh food compartment by selecting this point on the energy consumption curve defined by the twotest data points. When the temperature control cannot be set to

. attain a fresh food compartment temperature at orabove 38.0"P (3.a.-C). the otherformula is used to select the minimum testenergy use as the percycle energy consumption.
(5)

### NonTime-lniliated(Demand)Defrost

At the present time. there are no refrigeration products on the market which initiate automatic defrostingof the freezer by measuring any parameter other than compressor run time. The**~hnology** to produce such a system is lently available.This technique is often caned demand defrost and 

### its use could reduce the amount ofenergy consumed by automatic defrost refrigeration products.

A testprocedure for non-lime-initiated defrost products isincludedintoday's proposed rule and wouldbeapplicable
to such a system when itappears on the market. This testprocedure consists of
twoparts. The first partis the same as a nonautomatic defrost test andisused to determine the steady state energy use of

a unit whennot defrosting. Thesecond partmeasnres the energy ofa defrost period and requires a manual initiation ofdefrost while the compressormotor is running. The energy use during defrost is measured from initiation 

### until the completion ofthe second cycle ofthe
compressormotor afterdefrost to include the most significantpart ofthe
energy consumption duringthe stabilizationperiod after defrost.The manual defrostinitiation

### isnecessary since thereisinsufficient frost build-up during a no-load closed doortest 

### to

cause an antomatic initiation. 

### Ifan attemptwere made to cause

### frost buildup by using a water loadin the fresh

. food orfreezer compartment. the defrost
energywouldbe artificiallyhigh 1higher 

### than for time-initiated defrost} since
energywouldberequired to melt the frost. Portime-initiated defrost sys.tems. the existing testproceduremeasures the
energy used to defrost a unit whichhas little accumulatedfrost andhas been correlated to actualfielduseexperience. A similartestwithont frost onthe coU should also correlate for non-timeinitiated defrost systems. The accurate calculation ofenergy consumption of demand defrostproductsrequires knowledge ofthe averagetime between defrosts. Since demanddefrost products currently are notmarketed.. the data is
not·available.Demand defrostfrequency will vary depending uponthe average amount ofmoisture input to the cabinet from the ambient 

### air introducedby door opelrlngs andfrom moisture released-by food items placedin the refrigeratorfreezer. The moisture input due to food load

### willvarywith 

### !:he design ofthe product depending upon the amount of aircirculation

### betweenthe fresh food and freezer compartments. Based upon information published by a defrost control manufacturer. NBS has recommended that thepropused test procedure assume that demanddefrosts

occur once every Z4 hours. Manufacturers are specifically invited to comment onthis aspectoftheproposed
test procedure. When demand defrost products appear on the market. 

### it

### is possiblethat the average frequency 

### of defrost will differ from 

### the 24 

### hour intervalwhichis assumed by the test procedure. 

### Ifmanufacturers can substantiate the average defrost intervals for theirproducts. DOEwiD considermodifying the test procedure

. calculations toutilize the more accurate information. 

### (8) TemperatureMeasuremelll.8

Methods ofmeasuring compartment temperatures proposed in today's rule differ slightly from the methods in the existing test procedure. Instead of measuring temperatures on an unspecified number 

### ofcompressor

.cycles before defrost. today's rule requires measurements to be made during onetofour cycles. depending upon the frequency at which temperatUres are measured.Thenumber oftemperature cycles measuredis proposed to be equal to the time interval (inminutes) between temperature measurements.When averaging a number ofmeasurements ofa variable. the deviation to 

### be expected is inversely proportional to thenumber of
measurements taken. Today'sproposed rule provides equivalent accuracyfor differing frequencies ofmeasurements. while keeping the number of
measurements relatively constant. 

### (7)**Pe~CyaJe**

### Energy COasumptioll

Equationsfor calculating the per-cycle
energy consumption are incluood in today'sproposedprocedure.These equationsreplace the graphical evaluationprocess ofthepresent. procedure.The equations mathematically determine energy use in exactly the sameway as does a graphical procedure. Inmany cases. industry members already calculate these energy valuesbecause the calculatedresults are more accurate. less time consuming. and easily done with simple computers or calculators. Por refrigerators orrefrigerator-freezers. the per-cycle energy use is calculatedby using one ofthree formulas described 

### in section 6.2 ofAppendix; A. 

### Ifthe fresh food compartment temperature cannot be set at or**abov~** 45°P (7.2°C) and the freezer compartment cannot be set at or above its standardized temperature (either 5· or 15"F) with any control setting. the first formula selects the lowest actual test-measured energy consumption. In all other cases the percycle energy use is calculated using two formulas. Qne ofwhich determines
energy use as if the 

### fresh food compartmentwere at 45°P and the other which calculates energy use as 

### ifthe freezer were at its standardized temperature (5° or 15°F). These values
mayormay not be attainable in a particular test unit. 

### Ifnot attainable. the

### Federal Register 

# 1 Vol. 45. No. 136 

## I Monday. July 14. 1980 

## I Proposed Rules 47399

formula extends the line passing through the two actual measured conditions so that energy consumption maybe calculated for both ofthese temperatures. Thereported value ofpercycle energy consumption is then

. selected as the higher ofthe two calculated values. These methods 

### will replace the existing test procedure's graphical treatment ofvarious special

cases. 

### (8) Definitions

Today's proposed rule modifies the definition of "electricrefrigerator" to eliminate the overly prescriptive requirement that the unit has "only one exterior door."

In

### addition. since DOE is 

### not aware of any gas-powered refrigerators or refrigerator-freezers that are distributed
to any significant extent in commerce for domestic use in the United States. today's proposed rule revises the

.definitions of,these products to include only appliances powered by singlephase alternating current electric power. (9) 

### Commercial Standards



### A new ANSI/

### AHAM standardhas been approved which incorporates portions oftwo existing standards (AHAM HRF-2-ECFf 

### and ANS B38.1- 1970) 

### which 

### are referenced by the existing DOE test procedure. The differences between the old andnew standards 

### are minor and do not affect
test procedure results. The standardis used to standardize the test setup and to

measure the useful volume of refrigerators. refrigerator-freezers. and freezers. Where applicable. today's revised test procedure refers to the appropriate portion ofthe new ANSI/ AHAM 

### Standard HRF-1-1979.



### Under section 301 

### ofthe 

### DOE Act. DOE isrequired to comply with section 32 ofthe Federal Energy Administration Act 

### of 1974 (FEA Act) (Pub. 

### L. 93-275).



### as amended by section 9 

### ofthe Federal Energy Administration Authorization Act of 1977 (Pub. 

### L. 95-70).

.

Sections 32 (a) and (b) ofthe 

### FEA Act provide that:

(a) 

### Ifany proposed rule by the Administrator contains any commercial standards. or specifically authorizes or requires the uSe ofany such standards. then any general notice ofthe proposed rulemaking shall:

.

(1) Identify. by name. the organization which promulgated such standards; and

(2) State whether ornot. in the judgment ofthe Administrator. such organization complied with the requirements ofsubsection (b) in the promulgation of such standards.

(b) An organization complies with the requirements ofthis subsection in promulgating any commercial standards if: (1) 

### It

### gives interested persons adequate notice ofthe proposed promulgation ofthe standards and an opportunity to participate in the promulgation process through the presentation oftheir views in hearings

. ormeetings which 

### are open to the public;

(2) The membership ofthe organization at the time of the promulgation ofthe standards'is,:, sufficiently balanced so as to 

### allow for the effective representation ofall interestedpersons;

.

(3) Before promulgatipg such standards. it

### makes available to the public any records orp;roceedings ofthe organization. and any documents. letters. memorandums. and materials relation to such standards; and

(4) 

### It

### has procedures allowing interestedpersons to:

(Al Obtain a reconsideration ofany action taken by the organizationrelating
to the promulgation ofsuch standards. and

(B) 

### Obtain a review ofthe standards (including a review ofthe basis or adequacy of such standards).

The findings required ofDOEby section 32 ofthe

### FEA Act serve to alert the public and DOE to the use and**ba~Undofcommercialstandardsin** 

### a proposed rulemaking and. 

### through the
comment andhearing process, allow interestedpersons to make known their views regarding the appropriateness of the use ofthoseparticular commercial standards inthat proposedrulemaking. Any 

### negative finding does not reflect a determinationby DOE ofthe advisability ofusing a particular standardfor part ofthe test procedure regulation.

.

As 

### noted above. the rulemaking proposed today contains elements ofa commercial standard ANSI/AHAM HRF-1-1979. 

### promulgated by two nongovernmental organizations. ANSI andAHAM.

DOE has determined that this standard does not comply with the requirements of section 32(b) because.
among other things. it

### was not developed in a manner whichprovided for public participation. comment. and review. As 

### required by Section 32(c). DOE will consult with the Attorney General and the Chairman ofthe Federal Trade Commission concerning the impact ofthis standard on competition before prescnbingfinal test procedures. C. Comment Procedure



### 1. Written Comment

Interested persons are invited to participate in this rulemaking by submitting data. views or arguments with respect to the proposed amendments set forth in this notice.

Comments should be identified on the outside of the envelope and on ·documents submitted to DOE with the designation "Refrigerators. Refrigeratorfreezers. and Freezers-Proposed Test Procedure Revision; Docket No. CASRM-80-118." 

### Fifteen copies should be submitted ifpossible. All comments received by the data specified at the beginning ofthis notice. and all other

. relevant information. will be considered by DOE before final action is taken on the proposedregulation. Pursuant to the provisions of 10 CFR 1004.11. 

### any person submitting information which he or she believes 

### to be confidential and exempt by law from public disclosure should subnrit one complete copy. and fifteen copies from which information claimed
to be confidential has been deleted. In 

### accordance with the procedures established at 10 CFR 1004.11. 

### DOE shall make its own determination which regard to .any claim that information submittedbe exempted from public disclosure.

2. 

### PublicHearing

a. Request Procedure. 

### The time and place ofthe public hearing are indicated
at the beginning ofthis preamble. The hearing 

### will be continued. ifnecessary.

on the following day. DO.E invites any person who has aninterestin today's proposed rule. orwho

### is a representative ofa group or class of
persons that has an interest in today's proposed amendments. to make a written request for an opportunity to make an oral presentation. Such a request should be directed to the address indicated at the beginning of 

### this preamble and must be received by the date specified at the beginning of this notice. Such a requestmay be hand delivered to such address. between the hours of9:00 a.m. and 5:00 p.m.• Monday through Friday. A request shouldbe labeled both on the document and on the envelope "Refrigerators.

. Refrigerator-freezers. and FreezersProposed Test Procedure Revision; Docket No. CAS-RM-80-118."

The person making the request should briefly describe the interest he or she represents (if any). and state why he or she is a proper representative ofa group



### or class ofpersons that has such an interest. Each person requesting an opportunity for formal comment should give a concise summary ofthe proposed

### 47400 Federal Register 

## I Vol. 45, No. 136 

## I Monday, July 14, 1980 

## I Proposed Rules

oral presentation and a 

### telephone

'Imber where he or she may 

### be _untacted.

DOE will notify each person selected
to appear at the hearing, Each person selected to be heard should submit 15 copies ofhis statement to the address and by the date given in the beginning of this preamble. 

### In the event any person wishing to testify cannot meet the 15
copy requirement, alternative arrangements can be made with Carol A. Snipes in advance of the hearing by

soindicating in the letter requesting an oral presentation, orby calling (202) 252-9319.

b. 

### Conduct of Hearing. DOE reserves the right to select the persons to be heard at the hearing, to schedule their respective presentations, and to establish the procedures governing the conduct ofthe hearing. The length of each presentation may be limited, based

on the number ofpersons requesting to be heard.

A DOE official will be designated to preside at the hearing. This 

### will notbe a judicial or evidentiary t)"'Pe hear:ins. Questions may be asked only by those

. conducting the hearing, and there 

### will be no cross-examination ofpersons presenting statements. Any decision made byDOE with respect to the subject matter ofthe hearing will be lased on all information available 

### to DOE. At the conclusion ofall initial oral statements, each person who has made

an oral statement will be given the opportunity, 

### ifhe or she so desires, to make a rebuttal statement. The rebuttal
statements

### will begiven in the orderin which the initial statements were made and 

### will be subject to time limitations.

Any interested person may submit questions to be asked of any person making a statement at the hearing. DOE will determine whether the question 

### is relevant, and whether the time limitations permit it to bepresented for

answer.

Any further procedural rules needed for the proper conduct ofthe hearing

. will be announced by the presiding officer.

A transcript ofthe hearing 

### will be made and the entire record of the hearing, including the transcript, 

### will be retained by DOE and made available for inspection at the DOE Freedom of Information Office in the FotTestal Building. 1000 Independence Ave •• S.W

.. Room 58-180, Washington, D.C

. .20585, 

### between the hours of 8:30 a.m. and4:00
p.m., Monday through Friday. 

### In ' 'Iddition, any person may purchase a



### JPY of

### this transcript from thereporter. 

### D. RegulatoryandEnvironmental Renew •

Pursuant to Section 7(a)(1} ofthe Federal Energy Administration Act of 1974. a copy oftliis notice has been submitted 

### to the Administrator ofthe Environmental Protection Agency for his
comments concerning the impact ofthis proposal on the quality ofthe environment. No comments have been received from ,the AdmiIlistrator.

In accordance with the requirements ofthe National Environmental Policy Act of 

### 1969 (NAPA). 

### 42 U.S.C. 4321 et seq.• DOE has evaluated the proposed establishment of theseJesting procedures for consumer products to 'determine 

### ifan environmental
assessment 

## (EAl or an environmental impact statement (EIS) 

### is required. These testprocedures 

### will be used only to 

### standardize the measurement of
energy usage for the subjectconsumer products. The action ofprescribing these
test procedures. by itself, 

### will not result in any environmental impacts. Thus, it

### is clear that the proposed action is not a majorFederal action significantly affecting the quality of the human environment, andneither an EA nor an BIS is required. The potential environmental impacts that might occur from the application ofthe test procedures in connectionwith DOE's minimum energy efficiency standards
program 

### will be evaluated separatelyby that program.

The proposed rule has beenreviewed in accordance withExecutive Order l2044 andDOE Order203o.t, and it has been determined that the proposal is significant innature but does not have majorimpacts to manufacturers and

consumers (i.e., wouldnot impose annual economic costs of$100 million or more). Consequently, a reg'.tlatory analysis has not been prepared for this proposed rule.



### In consideration ofthe foregoing. it

### is

__ proposed to amend Chapter

## n ofTitle

10, Code ofFederal Regulations, as set forth below.

Issued inWashin8ton. D.C., July 9.1980. 

### T. B. 

### Stelson.

AssistantSecretary. ConS8l'VrItion andSolar 

### Energy.

PART 430-ENERGY CONSERVATION 

### PROGRAM FOR CONSUMER PRODUCTS

, 

### ,. Provisions of10 CFR Part

### 430, Subpart B and Appendices A and B are amended

as follows:. SUbpart 

### B- Test Procedures


### 1. Section 430.2 definitions of "electric refrigerator," "electric refrigeratorfreezer," "freezer," "refrigerator," and

_ "refrigerator-freezer" are revised to read

as follows:


### f 430.2 [Amended] • * 

### * *.

..,



### "Electric refrigerator" means a cabinet designed for the refrigerated storage offood at temperatures above 32·F., and having a source of

. refrigeration requiring single phase. alternating current electric energy input only. An electric refrigerator may include a compartment for the freezing and storage offood at temperatures below 32°F.,but does not provide a separate low temperature compartment designed for the freezing ofand the long
term storage offood at temperatures below 8°F.



## ,. • 

# . .. ,.

"Electric refrigerator-freezer" means a cabinetwhich consists oftwo or more compartments with at least one of the compartments designed for the refrigerated storage offoods at temperatures above 32°F. and with at least one ofthe compartments designed for thefreezing ofand the storage of

. frozenloods at temperatures ofS·F. or below which may be adjusted by the

nser 

### to a temperature ofo·F. orbelow. The source ofrefrigeration requires single phase. alternating current electrical energy input only. 

## • 

# ,. ,. ,. ,.

"Freezer" means a cabinet designed

as a unit for the storage offood at " temperatures ofO°F. orbelow, baving

the ability to freeze food and having a

source ofrefrigeration requiring single phase, alternating current energy input only. 

## • 

# ,. * 

# ,. ,.

"F.efrigerator" means an eiectric refrigerator. 

### * • 

### * • •

"Refrigerator-freezer" means an electric refrigerator-freezer.

, 2. 

### Section430.22 paragraphs (a) and (b) 

### are revised to read as follows:

§ 430.22 Teat

### procedures for

### meaaurea of energy coneumptlon.

(a) 

### Refrigerators andrefrigeratorfreezers. (1) The estimated annual operating costfor electric refrigerators and electricrefrigerator-freezers without

an anti-sweat heater switch shall be the product 

### ofthe following three factors: (i) 

### The representative average-use cycle of 365 cycles peryear. (il) 

### the average percycle energy consumption for the ' standard cycle 

### in kilowatt-hours per cycle, determined according to 6.2 

### of

### Federal Register 

## I Vol. 45, No. 136 

## I Monday, July 14. 1980 

## I Proposed Rules 47401



### Appendix A of

### this subpart. 

### and (iii) 

### the representative average unit cost in 

### dollars perkilowatt-hour as provided by



### . the Secretary. the resulting product then being rounded offto the nearest dollar. per year. . •

(2) 

### The estimated annual operating

. cost for electric refrigerators and electric refrigerator-freezers with an anti-sweat heater switch shall 

### be the product ofthe following three factors: (i) 

### The representative average-use cycle of365 

### cycles per year. (ii) halfthe sum 

### ofthe· average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweatheater switch in 

### the poSition set at the factory just prior tQ 

### shipping. each in

### kilowatthours per cycle, determined according to 6.2 

### ofAppendix A ofthis subpart, and (iii) 

### the representative average unit cost 

### in dollars perkilowatt-hour as provided by the Secretary. the resulting product then being rounded offto the nearest dollar per year.

(3) The 

### estimated 

### annual operating
costfor any other specified cycle type for electric refrigerators and 

### electric refrigerator-freezers 

### shall 

### be the product of the following 

### three factors: (i) 

### The representative average-use cycle of365



### . cycles peryear. (ii) 

### the average percycle energy consumption for the specified cycle type. determined according to 6.2 

### ofAppendix A to 

### this subpart. and (iii) 

### the representative average unit cost 

### indollars perkilowatthour as provided by the Administrator. the resulting product thenbeing rounded off to the nearest dollar per year.

(4) 

### The energy factor for electric refrigerators and 

### elec,tric refrigeratorfreezers. expressed in 

### cubic feet per

. kilowatt-hour per cycle. shall 

### be-

(i) 

### For electric refrigerators and 

### electric refrigerator-freezers not having



### an anti-sweat heater switch. the quotient of(Al the adjusted total volume in 

### cubic feet. determined according to 6.1 

### ofAppendixA ofthis Bubp8rt, divided by (B) 

### the average per-cycle energy consumptionfor the standard cycle in kilowatt-hours per cycle. determined according to 6.2 of

### Appendix A of this subpart. the resulting quotient then being rounded offto the second decimal place, and

(ii) 

### For electric refrigerators and

. electric refrigerator-freezers having 

### an anti-sweat heater switch. the quotient of (A) the adjusted total volume in 

### cubic feet. determined according to 6.1 

### of Appendix A ofthis aubpart. divided by (B) 

### halfthe sum ofthe average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type with the anti-sweat heater switch 

### inthe position set at the factory. each in



### .kilowatt-hours per cycle. determined according to 6.2 

### of

### Appendix A of

### this subpart. the resulting quotient then beingrounded 

### offto the second decimal pmoe.

(.5) 

### Otheruseful meas\ll'eS 

### ofenmgy 

### consumption for electric refrigerators and electric refrigerator-freezera 

### ahaIJ be those measures ofenergy 

### consumption for electricrefrigerators and electricrefrigerator-freezers which the Secretary determines are likely to assist consumers 

### in making 

### purchasing decisions andwhich are derived from the application of**App~** 

### A ofthis 

### subpart.

(b) 

### Freezers. {l} 

### The estimated annual operating cost for freezers without an anti-sweat heater switch shall be the product of

### the following three factors: (i) 

### The representative average-use cycle of 365 

### cycles peryear, (if) 

### the average percycle energy consumption for the standard cycle in

### kilowatt-hours per cycle. determined according to 6.2 

### of 

### Appendix B 

### ofthis aubpart, and (iii) 

### the representative average unit cost in 

### dollars per

### kilowatt-hour as providedby the Secretary. the resulting product then

. being rounded offto the nearest dollar peryear.

(2) 

### The estimated 

### annual operating
cost for freezers with an anti-sweat heater switch 

### shall he the product ofthe following 

### three factors: (i) 

### The representative average-use cycle of 365 

### cycles peryear, (ill 

### halfthe 

### sum ofthe average per-cycle energy consumption for the standard cycle and the average per-cycle energy consumption for a test cycle type 

### with the anti-sweatheater switch in 

### the position set at the factory. each in

### kilowatt-hours per cycle, determined according to 6.2 

### of

### Appendix 

### Bof

### this subpart. and (iii) 

### the representative average unit cost in 

### dollars perkilowatt-hour as providedby the Secretary. the resulting product then being rounded offto the nearest dollar per year.

(3) 

### The estimated annual operating
cost for any other specified cycle type for freezers shall he the product ofthe following three factors: (1) 

### The representative average-nse cycle of365 

### cyc.:1es peryear, [Ii) 

### the average percycle energy consumption for the specified cycle type, determined according to 6.2 

### ofAppendix B 

### of

### this subpart, and (ill) 

### the representative
average unit cost in 

### dollars perkilowatthour as provided by 

### the Secretary, the resulting product then being 

### rounded off


### to the nearest dollar peryear.

(4) 

### The energy factor for freezers. expressed in

### cubic feet perkilowatthourper cycle. shall be- (i) Forfreezers not having 

### an antisweatheater switch. the quotient of(A) the adjustednetrefrigerated volume in cubic feet. determined according to 6.1 

### ofAppendix B.

### of

### this aubpart. divided by (B) 

### the average per-cycle energy consumption for the standard cycle in 

### kilowatt-hours per cycle. determined according to 6.2 

### ofAppendix B 

### ofthis subpart, the resulting quotient then beingrounded off to the second decimal place. and

.

(ii) 

### For freezers having 

### an anti-sweat heater switch. the quotient of (A) the adjusted net refrigerated volume in. cuhic feet. determined according to 6.1 

### ofAppendix B 

### of

### this subpart, divided by (B) 

### half

### the sum ofthe average percycle energy consumption for the standard cycle and the average percycle energy consumption for a test cycle type 

### with the anti-sweat switch in 

### the position set at the factory justprior
to shipping, each in

### kilowatt-hours per cycle. determined according to 6.2 

### of Appendix B 

### of

### this subpart. the resulting quotient 

### then beingrounded offto the second decimal place.

(5) 

### Other useful measures ofenergy consumption for freezers 

### shall be those

measures ofenergy consumption for freezers which the Secretary determines

are likely to assist consumers in 

### making purchasing decisions and which are derived from the application of Appendix B 

### ofthis subpart. • *

.. .. ..

3. 

### Appendix A is revised 

### to read as follows:
Appendix A-UDifonnTest Method for Measuringthe Euergy Consumption of Electric R.efri3erators aDd Electric 

### Refrigerator-Freaers

1. Defiaitioos

1.1 "HRF-1-1979" means the Association of

### Home Appliance Manufacturers standard

fOf household refrigerators. combination refrigerator-freezers, and household freezers. also approved as an American National Standard as a revision ofANSI B 38.1-1970.

1.2 "Adjusted total volume" means the

IUlD of (i) thefresh food compartment volume

as defined in HRF-1-1979 in cubic feet. and (til the product ofan adjustment factor and the net freezer compartment volume as 

### defined in HRF-l-l979, in 

### cubic feet.

1.3 "Anti-sweatheater" means a device incorporated into the design of a refrigerator

orrefrigerator-freezer to prevent the

. accumulation ofmoisture on exterior surfaces ofthe cal:1inet under conditions of high ambient humidity.

1.4 "All-refrigerator" means an electric refrigerator which does not include a compartment for the storage offrozen food at temperatures below 32"F (M°C). Itmay include a compartment of0-25 cubic feet (7.1 litersl 9f less for freezing and storage ofice.

1.5 "Cycle" means the period of24 hours for which the energy use of an electric

### 47402 Federal Register 

## I Vol. 45. No. 136 

## I Monday. July 14. 1980 

## I Proposed Rules

refrigerator or electric refrigerator-freezer is calculated as though the consumer**activa~d** compartment tempereture controls 

### were set

10 that the desired compartment temperatures were maintained.

1.6 "Cycle type" means the set oftest conditions having the calculated effect of operating an electric refrigerator or electric refrigerator-freezer for a period of24 hoUl'll, with the consumer activated controls other than those 

### thai control compartment temperatures set to esteblishvarious operating characteristics.

1.7 "Standard cycle" means the cycle type in which the antisweat heater control. 

### when provided. is set in the hishest 

### energy coll8lllJling position.

'1.8 "Automatic defrost" means s system in which the defrost cycle is automatically Initiated and terminated. with resumption of normal refrigeration at the conclusion of defrost operation. The system automatically prevents the permanent formation offrost on

.all refrigerated surfaces. Nominal refrigerated food temperatures are maintained during the operation ofthe automatic 

### defrost system.

2.Test 

### Conditions

z.t Operational conditions. The electric refrigerator or electric refrigerator-freezer shall be installed and its operating conditions maintained in accordance with HRF-l-l979. section7.1 through section 7.4.3.3. except as noted in paragraph 2.3. below.

2.2 Ambient temperature. The ambient temperature ofthe air surroUlldins the**uni~** belDs tested shall be 90.0 ±l°F(32.3 ± UOC) during the time while the unit is stabilizing to steady state conditions and during the test period.

2.3 Conditions for automatic defrost refrigerator-freezers. For automatic defrost refrigerator-freezers. the freezer compartments shall not be loaded with any frozen food packages. Cylindrical metallic

masses ofdimensions 1.12 ± 0.25 inches (2.9 '± 0.6 em) in diameter and height shall be attached in good thermal contact with each tempereture sensor within the refrigerated compartments. All temperature measuring

sensormasses shall be supported by non- thermally conductive supports in such a
manner that there will be atleast one inch (2.5 em) ofair space separating the thermal

mass from contact with any surface. Incase ofinterference with hardware at the sensor locations specified in section 5.1. the sensors shall be placed at the nearest adjacent location such that thers will bea one inch air space separating the sensor mass from the hardware.



## a. Test 

### Control SettiDga

3.1 Model with no user opereble temperature control. A test shall be performed during which the compartment temperatures and energy use shall be measured. A second test shall be performed with the temperature control electrically short circuited to cause the comprsssor to run continuously.

3.2 Model with user operable temperature control. A first test shall be performed with all compartment temperature controls set at their median position midway between their "'Yarmest and coldest setting. Knob detents 

### ehalI be mechanically defeated ifnecessary to attain a median setting. A second test shaU be performed with all controls seteither at their warmest or theircoldest settings. whichever isneeded to cause the compartment temperatures measured by the two tests to bracket (i.e

.. one is above and "

one isbelow) the standardized temperature for rsportlns energy consumption. The 

### Btandardized temperaturas sball be: 8.2.1 'All-rsfrigerator. 38°F (3.8°C) fresb 

### food compartment temperatura. 3.2.2 Refrigerator. 15"F (-9.4"C) freezer compartment C8mperature. 3.2.3 Refrigerator-freezer. 

## n (-15'C) freezer compartment temperature. Ifthe standardized temperature cannot be attained even with the extrsme position settlns. the measured temperature at

### the extrsme position shall be asclose to the standardized temperatura aspossible.



### t.Test Period

4.1 Test Period. Tests shall be performed byestablishin,g the conditions set forth in Section 2. and uslDs control settlnss as set forth in Section 3. above.

4.1.1 Nonautomatic Defrost. Ifno automatic freezer defrost provisions ars provided on the model belDs tested. the test time period shall start after steady state conditions have been rsached and be ofnot less than thrse hours in duration. During the test period. the comprsssor motor shall complete two or mors whole comprs8sor cycles (a comprsssor cycle is a complete "on" and a complete "ofr'period ofthe motor). If

, 110 "ofr' cyclins

### Will occur. the test period

shall be thrse hours. Ifincomplete cyclins (less than two compressor cycles) occurs during a 24 hour period. the results ofthe Z4 hour period shall be used.

4.1.2 Thned Automatic Defrost. Ifa timeInitiated defrost isprovided in the device 

### belns tested. the test time pertod shallatart after stabilization has bean completed andbe from one point during a defrost period to the

same point durin8 the next defrost period.

4.1.3 Non-Time-Initiated Defrost. Ifa non- time-Initiated defrost system is provided in the model belDs tested. the test time period shall consist oftwo parts. A first part shall be ths:IIame as the test for a unit having no defrost provisions (section 4.1.1). The second part shall start when a defrost period is manually initiated during a comprsssor "on" cycle and terminate at the second tum "ofr' ofthe compressor motor or after four hours. whichever comes first.

. S. Test Measurements

5.1 Temperature Measursments. Temperatures 

### shall be measured at the locations prescribed in Figures 7.1, 7.2. and 1.3 ofHRF-l-l979. No freezer temperature measurements need be taken in an aUrefrigerator model.

Ifthe interior arrangements ofthe cabinet do not conform with those shown in Figure 7- 1 and 7-2 ofHRF-l-l979. measurements shall be taken at selected locations chosen to reprssent approximately the entirs refrigerated compartment. The locations selected shall be a matter ofrecord.

5.1.1 Measured Temperature. The measured temperature ofa compartment ls to be the average ofall sensor temperature rsadings taken in that compartment at a particular time. Measurements shall be taken atrsgular intervals not to exceed four minutes.

5.1.2 CompartmentTemperature. The compartment temperature for each test period shall be an average ofthe measured temperetures taken in a compartment during

a complet.e cycle or several complete cycles ofthe comprsssor motor (one comprsssor cycle is one complete motor "on" and one complete motor "ofr' period). for non-timeInitiated defrost models. compartment temperatures shall be those measured in the first part ofthe testperiod specified in 4.1.3.

5.1.2.1 The number ofcomprsssor motor cycles over which the compartment temperature is to be averaged shall be equal to the number ofminutes betweenmeasured temperature readings. rounded up to the next whole minute. One ofthe cycles shall be the last complete compressormotor cycle during the test period.

5.1.2.2 Ifno comprss80r motor CYclins

occurs. the compartment temperatures shall be the average ofreadings taken during the last thirty minutes ofthe test period.

5.1.2.3 Ifincomplete CYclins occurs. the compartment temperetures shall be the average ofall readings taken during the last thrse hours ofthe last complete "on" period.

5.2 Energy Measurements 5.2.1 

### Per-day Energy Consumption. The energy consumption inkilowatt-hours per day for each test period sball be the energy expended during the testperiod as specified in section 4.1 adjusted to a 24 hour period. The adjustment shallbedetermined as follows:

5.2.1.1 Non automatic and time-initiated automatic defrost refrigerators and**refrlgeretor~freezer** modeis. The energy consumption inkilowatt-hours per day shall be calculated as:

- ET

...EPXl440/T wOOrs ET==test cycle energy expended inkilowatthours per day.

. EP==energy expended inkilowatt-hours durin8 the test period. T==

### lenath oftime ofthe test period in minutes. 1440=conversionfactor to adjust to a 24 hour period in minutes per day. 5.2.1.2 Non-time-lnitiated defrost. The anergy consumption in kilowatt-hours per ' day shall be calculated as: ET={{EPl/Tt)X(1440-T2)) +EP2 wbere ET==Defined in 5.2.1.1 EPl-energyexpended in kilowatt-hours during the first part ofthe test, EP2=energy expended inkilowatt-bours per day during the second part ofthe test. Tt and T2=length oftime in minutes ofthe first andsecond test parts rsspectively. and' 1440=conversionfactor to adjust to a 24-bour period.

. 5.3 Volume measurements. The electric refrigerator or electric refrigerator-freezer total rsfrlgerated volume. VT. shall be measured in accordance with HRF-l-l919. section 3.2 and section 4.1 through 4.3. and defined as:

.

### Federal Register 

## I Vol. 45. No. 136 

## I Monday. July 14. 1980 

## I Proposed Rules 47403

VT=VF+VFF where VT= total refrigerated volume in cubic feet. VF=freezer compartment volume in cubic

. feet. and VFF=fresh food compartment volume in cubic feet.

6. Calculation ofDerived Results from Test Measurements

6.1 Adjusted Total Volume. 6.1.1 Electric refrigerators. The adjusted total volume.

VA. for electric refrigerators under test shall be defined as:

. VA=[VFxCR)+VFF where VA- adjusted total volume in cubic feet. VF and VFF are defined in 5.3. and CR=adjustment factor oflM. dimensionless.

6.1.2. Electric refrigerato

....freezers. The adjusted total volume. VA. for electric refrigerato

....freezers under test shall be calculated as follows: VA=(VFxCRF)+VFF where VF and VFF are defined in 5.3 and VA is defined in 6.1.1. CRF= adjustment factor of 1.63. dimensionless. 6.2 Average Per-Cycle EJiergy Consumption.

- .

6.2.1 All-refrigerator Models. The average per-cycle energy consumption for a cycle type is expressed in kilowatt-hours per cycle to the nearest tenth (0.1) kilowatt-hour and shall depend upon the temperature attainable in the fresh food compartment as shown below. 6.2.1.1 If the fresh food compartment temperature is always below 38.o°P**(3.3~C).** the average per-cycle energy consumption shall be defined as: E=ETl where E=Total per-cycle energy in kilowatt-hours
per day. ET is defined in 5.2.1. and Number 1 indicates the test period during which the highest fresh food compartment temperature is measured. 6.2.1.2 Ifone of the fresh food compartment temperatures measuredfor a test period is greater than 38.0oP (3.3"C). the
average per-cycle energy consumption shall be defined as: BE=ETl+ ((ET2-ETl)X(38.0-TRll1 (TR2-TR1) where E is defined in 6.2.1.1. ET is defined in 5.2.1. TR=Presh food compartment temperature determined according to 5.1.2 in degrees P. Number 1 and 2 indicate measurements taken during the first and second test period as appropriate. and

. 38.0=Standardized fresh food compartment temperature in degrees P. 6.2.2 Refrigerators and refrigerato

.... freezers. The average per-cycle energy consumption for a cycle type is expressed in kilowatt-hours per-cycle to the nearest tenth (O.l) kilowatt-hour and shall be defined in the applicable follOwing manner:

. .

6.2.2.1 Ifthe fresh food compartment temperature is at orbelow 45'P (7.2·C) in



# , both ofthe tests and the freezer compartment temperature is always at orbelow 15°P (-9.4"C) in both tests ofa refrigerator or at

orbelow 5"P (-15'C) in both tests ofa refrigerator-freezer. the per-cycle energy consumption shall be: B=ETl where Bis defined in 6.2.1.1. ET is defined in 5.2.1. and Number:t indicates the testperiod during which the highest freezer compartment temperature was measured.

_ 6.2.2.2 Ifthe conditions of6.2.2.1 do not exist. the per-cycle energy consumption shall be defined by the higher ofthe-two values calculated by the following two formulas: E=ETl+((ET2-ETl)x [45.Q-TR1)! (TR2-TR1)) and E=ETl+((ET2-ETl)x(k-TFl)/(TF2-TFl)} where • B is defined in 6.2.1.1. ET is defined in 5.2.1. TR and number 1 and 2 are defined 

### in 6.2.1.2. TF=Freezer compartment temperature determined according to 5.1.2 in degrees F. 45.0 is a specified fresh food compartment temperature in degree P. and k is a constant 15.0 for refrigerators or 5.0 for refrigerato

....freezers each being standardized freezer compartment temperature in degrees P. 4. Appendix B is revised-to read as follows: Appendix B-UnlformTest Method for Measuring the Energy Consumption of 

### Freezers

1. Definitions.

1.1 "HRF-l-l979"means the Association ofHome Appliance Manufacturers standard for household refrigerators. combination

. refrigerator-freezers. and household freezers. also approved as an American National Standard as a version ofANSI B38.1-1970.

1.2 "Anti-sweat heater" means a device incorporated into the design ofa freezer to prevent the accumulation ofmoisture on exterior surfaces of the cabinet under conditions ofhigh ambient humidity.

1.3 "Cycle" means the period of24 hours for which the energy use ofa freezer is 1:alcul.ated as though the consumer-activated compartment temperature controls were preset so that the desired compartment temperatures were maintained.

1.4 "Cycle type" means the set oftest conditions having the calculated effect of operating a freezer for a period of24 hours with the consumer-activated controls other than the compartment temperature CQntrol
set to establish various operating characteristics.

1.5 "Standard cycle" means the cycle type in which the anti-sweat heater switch. when provided. is set in the highest energy consumingposition.

1.6 "Adjusted total volume" means the product of. (1) the freezer volume as defined in HRF-1-1979 in cubic feet. times (2) an adjustment factor.

1.7 "Automatic Defrost" means a system in which the defrost cycle is automatically initiated and terminated. with resumption of normal refrigeration at the conclusion of defrost operation The system automatically prevents the permanent formation offrost on all refrigerated surfaces_ Nominal refrigerated food temperatures are maintained during the operation of the automatic defrost system. 

### :iTest Conditions.

2.1 Operational conditions. The freezer shall be installed and its operating conditions maintained in accordance with HRF-l-1979. section 3.19 and section 7 through section 7.4.3.3.

3.Test Control Settings.

3.1 Model with·no user operable temperature control. A test shall be performed durmg which the compartment temperatures and energy use shall be**~easured.** A second test shall be performed with the temperature control electrically short circuited to cause the compressor to run continuously.

- 3.2 Model with user operable temperature control. A first test shall be performed with temperature control set at its median position midway between the warmest and coldest setting. A second test shall be performed with the control set either at the warmest or coldest setting whichever is needed to cause the compartment temperatures measure!! by the two tests to brackfl.t (one above and one below) o.ooP (-l7.8"C). Ifo.O·P (-17.8·C)

cannot

### be attained even with the

extreme position setting. the measured temperature at the extreme position shall be as close as possible to 0.0·F (- 17.s°C).

4. Test Period.

4.1 Test Period. Tests shall be performed by establishing·the conditions set forth in Section 2 and using control settings as set forth in .Section 3 above.

4.1.1 Nonautomatic Defrost. Ifno automatic freezer defrost provisions are provided on the model being tested. the test time period shall start after steady state conditions have beenreached and be ofnot

. less than three hours duration. During the test period the compressor motor shall complete
two or more whole cycles (a compressor cycle is a complete "on" and a complete "off" period ofthe motor). Ifno "off" cycling will

occur the test penod shall be three hours. If incomplete cycling (less than two compressor cycles) occurs durmg a 24 hour period. the results of the 24 hour period shall be used.

4.1.2 Timed Automatic Defrost. Ifa timeinitiated defrost is provided in the device being tested. the test time period shall start after stabilization has been reached and be from one point during a defrost period to the

same point dunng the next defrost period.

4.1.3 Non-Time-Initiated Defrost. If a nontime-initiated defrost system is provided in the model being tested. the test time period shall consist of two parts. A first part shall be the same as the test for a unit having no defrost provisions (section 4.1.1). The second pari shall start when a defrost period is manually initiated during a compressor "on" cycle and terminate at the second turn "off" of the compressor motor or after four hours. whichever comes first.

.

# ..

47404 Federal Register 

## I Vol. 45, No. 186 

## I Monday, July 14. 1980 

## I Proposed Rules

'"Test Measwvments

..

5.1 Temperature measurements shall 

### be made in aoco.rdance With HRF-l-l978 aection 7.4.3.3.

5.1.1 Measured Temperature. The measured temperature IS to be the average of all sensortemperature readmgs taken at a particulartime. Measurements shall**~** taken
atregularintervals not to exceedfour minutes.

5.1.2 CompartmentTemperature.The compartment temperature for each test period shall be an averBlle ofthe measured temperatures taken dunng a complete cycle

or several complete cycles ofthe compressor motor 

### (one compressor cycle is one complete
motor 

### "on" and 

### one complete motor 

### "oft·

. period). Fornon-time-initiated defrost models. compartment temperatures shall 

### be those measured in the first pari ofthe test period specified in 4.1.3.

-

5.1.2.1 The number ofcompressor motor cycles overwhich the compartment temperature is 

### to be avefBlled shall beequal
to the number ofminutes betweenmeasured temperature readings roundedup to the next whole minute. One ofthe cycles shall be the last complete compressormotor cycle

## d.uriDs
the test period.

5.1.2.2 Ifno compressormotor cycling



### occurs. the compartment temperature shall be the avefBlle ofreadings taken during the last thirty minutes ofthe testperiod.

5.1.2.3 Ifincomplete cycling 

### occurs (less than one cycle) the compartment temperature shall be the avefBlle ofall readings 

### taken during the last three hours ofthe last complete "on" period.

.

5.2 Energy Measurements: 5.2.1 Per-day Energy Consumption. The
energy consumption in kilowatt-hoursper day

### for each test period shall be the 

### energy expended during the test period as sPecified in section 4.1 adJusted to a Z4 hour period.

The adjustment shall be d.etermined as follows: •

5.2.1.1 Nonautomatic and time-lnitiated automatic defrost models The energy consumption kilowatt-tlOurs perday shall be calculated as: ET"'(EPXl440Xkl/T where
ET=test cycle energy expendedin.kilowatthours perday. EP=energy expend.ed m kilowatt-hours

during the test pel'lOO. T=length oftime of tllE' leat period in

minutes. 1440=convenrionfactor to adjust to a Z4 hour·

period in minutes per day. and
K=correction factOI of0 7 for cItest freezers

and 0.85 for upngl1T freezers to adjust for aV8fB88 househOld UlldJlle. dimensionless.
5.2.1.3 Non-time-mltlated defrost.The

. energy consumptionm kilowatt-hours per day shall be calcu1ated as: ET=(((EP1/Tl)X(1440- nn+EPZ)xK
where ET. 1440. and K are defined in 5.Z.1.1 EP1==energy expended m kilowatt-hOUJ'l



## durlnr the first pari ofthe test, PZ=energy expended tn kilowatt-hours per day 

### durin8 the second pari of**~e** telt. 

### and T1 andTZ=length oftime in minutes ofthe first and seCond teat parts respectively.
5.3 Volume mauurements.The electric

. freezer totalrefrigerated volume. VI'. shall be measured in accordance with HRF-1-1979. section 3.2 and section 5.1 

### throl18h 5.3.

&. Calculation of

### Derived Results FromTest Measurements.

8.1 AdjustedTotalVolume: 8.1.1 Electric freezers. The

### ~usted total volume. VA. forelectric freezers under test ahall be defined

### as: VA=VTxCF where VA=adjusted total volume in cubic feet, VI'

### ==total refrigerated volume in cubicfeet.

and CF=oorrectiori factor of1..13.dimensi.oDless.

6.2 Average Per-CycJe Energy Consumption:

6.2.1 The average per-cycle energy consumption for a cycle type is expressed in kilowatt-hours per cycle to thp nearest tenth (0.1) kilowatt-hour and shall depend upon the temperature attainable in the freezer compartment as shownbelow.

6.2.1.1 Hthe freezer compartment temperature is always below 0.0· F (17.8" C). the average per-cycle energy consumption shall be defined as: E=ET1 where E=Total per-cycJe energy in kilowatt-hours

per day. ET is defined in 5.2.1. and Number 1 indicates the test period during

. which the highest freezer compartment temperature is measured.
6.2.1.2 Ifone ofthe freezer compartment temperaturesmeasured for a test period is greater than 0.0° 

### F (17.8· C). the average percycle energy consumption shan be defined as: EE=ET1+(ET2-El'1x [0.0-TF1)/

(TF2-TF1))
where
E is defined in6.2.1.1 ET is defined in 5.2.1

. TF=)'reezer compartment temperature

., determined according to 5.1.2 

### m degreesF. Numbers 1 and 2 indicate measurements

taken**d~** the first and second test period as appropriate. and
O.O=Standardized freezer compartrn"lnt

temperature in degrees F.
(FR Doc. eo-.zo871Pl1ed ,...U_8145 ami
BILLING CODE

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