CAS-RM-80-118 COMMENT 0A

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 
 CAS-RM-80-118 COMMENT 0A

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 of Energy. 

ACTION: Proposed rule. 

SUMMARY: The Department of Energy 

hereby proposes to amend its test 

procedures for refrigerators. refrigeratorfreezers, and freezers. These test 

procedures ate part of the 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 speak by 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 of Energy. 12th and 

Pennsyvlania Avenue. N.W •• 

Washington. D.C. 

Comments. requests to speak at the 

hearing and statements to: Ms. C. 

Snipes. U.S. Department of Energy. 

Office of Conservation 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 of Conservation and 

Solar Energy. Division of Buildings 

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 of Energy. Office of 

Conservation and Solar Energy. Office 

of Hearings and Dockets. Mail Station 

68-025. 1000 Independence Avenue, 

S.W .• Washington. D.C. 20585, (202) 

252-9319. 

~ne Margolis. Esq .• U.S. Department 

Ji Energy. Office of General Counsel. 

Room lJ.t...254. Mail Station 8A-1.52. 

2.000 Independence 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 consumer products. under 

Section 301 of the Department of.Energy 

Organization Act (DOE Act) [Pub. 1.. 95-

91). The energy conservation program 

for consumer products was establiahed 

by PEA pursuant to Title m. Part B of 

the Energy Policy and Conaervation Act 

(Act) (Pub. L. 94-163). SubBequently. the 

Act was amended by the National 

Energy Conservation Policy Act 

(NECPA) (Pub. L. 95-619}.References in 

this notice to "the Act". or to 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 Act requires that standard methods 

DI testing be prescribed for covered 

products. Test procedures 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 

procedures were prescribed on 

September 8. 1977 (42 FR 46140. 

September 14. 1977). 

l)ub.sequentlY.8 Petition for 

Rulemaking was submitted by the 

Association of Home Applicance 

Manufacturers (AHAM). This petition 

requested that DOE examine shortened 

test procedures 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 existing DOE test 

procedures. The National Bureau of 

Standards (NBS) has evaluated 

experimentally the test procedures 

suggested by AHAM along with other 

comments received directly from 

manufacturers and has recommended to 

DOE revised test procedures which 

incorporate many of the AHAM 

suggestions. On the basis of this 

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, 

l1lId Freezers) 

The current DOE 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 of the control. After plotting an 

energy consumption vs. compartment 

temperature curve corresponding to 

these control positions. the energy 

consumption for the standardized 

freezer compartment temperatures (0' F 

for freezers. 5° F for refrigeratorfreezers. and 15· F for refrigerators) is 

read from the graph. AHAM proposed 

than an altemate test procedure be 

allowed which requires that the control 

be set such that energy consumption is 

'measured at two rather than three 

freezer compartment temperatures. One 

test is conducted by selecting a 

temperature control position such that 

the freezer compartment falls within 3' F 

above the standardized freezer 

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. depending upon the class of 

product} is obtained from the graph. 

NBS and DOE have analyzed this test 

procedure and have determined that a 

test which requires such careful 

selection of control positions could 

potentially be 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 never require more than two control , 

-settings for a valid test. The procedure 

requires that the energy consumption 

first be measured 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 or the coldest setting so 

that whenever possible. the freezer 
 CAS-RM-80-118 COMMENT 0A

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) AHAM Petition (Multiple Control 

Rejrigerator--Freezers) 

The existing DOE test procedure 

specifies that multiple control 

refrigerator-freezers be tested at each of 

the extreme positions of the 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 of the 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% of its 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 of the unit is 

determined at the Sop average freezer 

compartment temperature. 

NBS carefully analyzed all four 

conditions of the AHAM-suggested 

procedure. The provision for no load in 

the freezer is a change from the present 

test procedure which specifies no load 

in the fresh food comparbnent and a 75% 

freezer comparbnent load of standard 

sized packages of frozen food. The 

change was requested by industry to 

reduce the burdensomeness of the test 

related to selecting and maintaining the 

packages. constantly relocating them. 

arranging them in the freezer 

comparbnent under test, and assuring 

that the imbedded thermocouples are correctly positioned. The-load increases 

the length of time 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 test procedure. NBS ran tests on refrigerator-freezerS both with 

and without loads to assure the 

acceptability of the 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 of each 

package cannot be specified. Thus. the 

placement of the firs! food packages 

affects the final arrangement of the 

remaining packages. the location of the 

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 important parameter. 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 of insulating 

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 caused by 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 of any of the air 

gaps effects the results by producing 

different energy usage figures. The 

elimination of the test load should 

reduce not only burdensomeness but 

sbould also provide a much more standardized and repeatable 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 of measuring freezer 

compartment temperatui:e must be 

modified since the temperature sensors . are specified to be located in the load 

packages. AHAM requested that freezer 

temperatures be measured in 

accordance with an existing industry 

method in which a thermal mass (with a heat capacity not to exceed that of 20 

grams of water) 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 of 20 grams could be obtained with 

a small container of water (less than an ounce). a large volume offoarn 

insulation. a metal sphere or a large thin 

sheet of metal. etc. The physical 

dimensions of the 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 of the large 

cyclic temperature variation and sharp 

changes which make temperature 

averaging difficult: Today's proposed 

rule requires the use of weighted 

temperature sensors and specifies the 

thermal mass dimensionally. in order to 

reduce differences due to (1) the effects 

of the thermal mass on the air 

circulation in the compartment, (2) the 

locations of the sensors, and (3) the 

variation of measured 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 test procedure 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 of the marks is 

at the actual center position. Some of 
 CAS-RM-80-118 COMMENT 0A

Federal Register I Vol. 45, No. 136 / Mondtt July '14. 1.980 I Proposed Rules 

these controls also have 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 the AHAM-suggested two-point 

test but requires that the controls be set 

at the midpoints even if detents have to 

be mechanically overridden. 

(a) Another Two-Point Test Procedure 

-One industry member submitted data 

to NBS which indicated that a two-point 

test procedure using the cold I cold 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 

may not hold tnle for all manufacturers. 

The use of extreme positions can produce erroneous results if·the 

efficiency of the 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 proposed rule 

contains a definition of the "allrefrigerator" whicb specifies that its .. 

freezer compartment can be no larger 

than 0.25 cubic feet. Since the freezer 

temperature of an all-refriger&tor is not 

a critical parameter. 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 two test data points. When the 

temperature control cannot be set to . 

attain a fresh food compartment 

temperature at or above 38.0"P (3.a.-C). 

the other formula is used to select the 

minimum test energy use as the percycle energy consumption. 

(5) Non Time-lniliated (Demand) Defrost 

At the present time. there are no 

refrigeration products on the market 

which initiate automatic defrosting of 

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 of energy 

consumed by automatic defrost 

refrigeration products. 

A test procedure for non-lime-initiated 

defrost products is included in today's 

proposed rule and would be applicable 

to such a system when it appears on the 

market. This test procedure consists of 

two parts. The first part is the same as a 

nonautomatic defrost test and is used to 

determine the steady state energy use of 

a unit when not defrosting. The second 

part measnres the energy of a defrost 

period and requires a manual initiation 

of defrost while the compressor motor is 

running. The energy use during defrost is 

measured from initiation until the 

completion of the second cycle of the 

compressor motor after defrost to 

include the most significant part of the 

energy consumption during the 

stabilization period after defrost. The 

manual defrost initiation is necessary 

since there is insufficient frost build-up 

during a no-load closed door test to cause an antomatic initiation. If an 

attempt were made to cause frost buildup by using a water load in the fresh . 

food or freezer compartment. the defrost 

energy would be artificially high 1higher 

than for time-initiated defrost} since 

energy would be required to melt the 

frost. Por time-initiated defrost sys.tems. 

the existing test procedure measures the 

energy used to defrost a unit which has 

little accumulated frost and has been 

correlated to actual field use experience. 

A similar test withont frost on the coU 

should also correlate for non-timeinitiated defrost systems. The accurate 

calculation of energy consumption of 

demand defrost products requires 

knowledge of the average time between 

defrosts. Since demand defrost products 

currently are not marketed.. the data is 

not ·available. Demand defrost frequency 

will vary depending upon the average 

amount of moisture input to the cabinet 

from the ambient air introduced by door 

opelrlngs and from moisture released-by 

food items placed in the refrigeratorfreezer. The moisture input due to food 

load will vary with !:he design of the 

product depending upon the amount of 

air circulation between the fresh food 

and freezer compartments. Based upon 

information published by a defrost 

control manufacturer. NBS has 

recommended that the propused test 

procedure assume that demand defrosts 

occur once every Z4 hours. 

Manufacturers are specifically invited to 

comment on this aspect of the proposed 

test procedure. When demand defrost 

products appear on the market. it is 

possible that the average frequency of 

defrost will differ from the 24 hour 

interval which is assumed by the test 

procedure. If manufacturers can substantiate the average defrost 

intervals for their products. DOE wiD 

consider modifying the test procedure . 

calculations to utilize the more accurate 

information. 

(8) Temperature Measuremelll.8 

Methods of measuring 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 of compressor . cycles before defrost. today's rule 

requires measurements to be made 

during one to four cycles. depending 

upon the frequency at which 

temperatUres are measured. The number 

of temperature cycles measured is 

proposed to be equal to the time interval 

(in minutes) between temperature 

measurements. When averaging a 

number of measurements of a variable. 

the deviation to be expected is inversely 

proportional to the number of 

measurements taken. Today's proposed 

rule provides equivalent accuracy for 

differing frequencies of measurements. 

while keeping the number of 

measurements relatively constant. 

(7) Pe~CyaJe Energy COasumptioll 

Equations for calculating the per-cycle 

energy consumption are incluood in 

today's proposed procedure. These 

equations replace the graphical 

evaluation process of the present. 

procedure. The equations 

mathematically determine energy use in 

exactly the same way as does a 

graphical procedure. In many cases. 

industry members already calculate 

these energy values because the 

calculated results are more accurate. 

less time consuming. and easily done 

with simple computers or calculators. 

Por refrigerators or refrigerator-freezers. 

the per-cycle energy use is calculated by 

using one of three formulas described in 

section 6.2 of Appendix; A. If the 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 of which determines 

energy use as if the fresh food 

compartment were at 45°P and the other 

which calculates energy use as if the 

freezer were at its standardized 

temperature (5° or 15°F). These values 

mayor may not be attainable in a 

particular test unit. If not attainable. the 
 CAS-RM-80-118 COMMENT 0A

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 may be 

calculated for both of these 

temperatures. The reported value of percycle energy consumption is then . 

selected as the higher of the two 

calculated values. These methods will 

replace the existing test procedure's 

graphical treatment of various special 

cases. 

(8) Definitions 

Today's proposed rule modifies the 

definition of "electric refrigerator" 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 standard has 

been approved which incorporates 

portions of two 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 and new 

standards are minor and do not affect 

test procedure results. The standard is 

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 of the new ANSI/ 

AHAM Standard HRF-1-1979. 

Under section 301 of the DOE Act. 

DOE is required to comply with section 

32 of the Federal Energy Administration 

Act of 1974 (FEA Act) (Pub. L. 93-275). 

as amended by section 9 of the Federal 

Energy Administration Authorization 

Act of 1977 (Pub. L. 95-70). . Sections 32 (a) and (b) of the FEA Act 

provide that: 

(a) If any proposed rule by the 

Administrator contains any commercial 

standards. or specifically authorizes or 

requires the uSe of any such standards. 

then any general notice of the proposed 

rulemaking shall: . 

(1) Identify. by name. the organization 

which promulgated such standards; and 

(2) State whether or not. in the 

judgment of the Administrator. such 

organization complied with the 

requirements of subsection (b) in the 

promulgation of such standards. 

(b) An organization complies with the 

requirements of this subsection in 

promulgating any commercial standards 

if: 

(1) It gives interested persons 

adequate notice of the proposed 

promulgation of the standards and an 

opportunity to participate in the 

promulgation process through the 

presentation of their views in hearings . 

or meetings which are open to the 

public; 

(2) The membership of the 

organization at the time of the 

promulgation of the standards'is,:, 

sufficiently balanced so as to allow for 

the effective representation of all 

interested persons; . 

(3) Before promulgatipg such 

standards. it makes available to the 

public any records or p;roceedings of the 

organization. and any documents. 

letters. memorandums. and materials 

relation to such standards; and 

(4) It has procedures allowing 

interested persons to: 

(Al Obtain a reconsideration of any 

action taken by the organization relating 

to the promulgation of such standards. 

and 

(B) Obtain a review of the standards 

(including a review of the basis or 

adequacy of such standards). 

The findings required of DOE by 

section 32 of the FEA Act serve to alert 

the public and DOE to the use and 

ba~Undofcommercialstandardsin 

a proposed rulemaking and. through the 

comment and hearing process, allow 

interested persons to make known their 

views regarding the appropriateness of 

the use of those particular commercial 

standards in that proposed rulemaking. 

Any negative finding does not reflect a 

determination by DOE of the 

advisability of using a particular 

standard for part of the test procedure 

regulation. . 

As noted above. the rulemaking 

proposed today contains elements of a 

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 which provided 

for public participation. comment. and 

review. As required by Section 32(c). 

DOE will consult with the Attorney 

General and the Chairman of the 

Federal Trade Commission concerning 

the impact of this standard on 

competition before prescnbing final 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 if possible. All comments 

received by the data specified at the 

beginning of this notice. and all other . relevant information. will be considered 

by DOE before final action is taken on the proposed regulation. 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 

submitted be exempted from public 

disclosure. 

2. Public Hearing 

a. Request Procedure. The time and 

place of the public hearing are indicated 

at the beginning of this preamble. The 

hearing will be continued. if necessary. 

on the following day. DO.E invites any 

person who has an interest in today's 

proposed rule. or who is a representative of a 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 request may be hand 

delivered to such address. between the 

hours of 9:00 a.m. and 5:00 p.m .• Monday 

through Friday. A request should be 

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 of a group 

or class of persons that has such an 

interest. Each person requesting an 

opportunity for formal comment should 

give a concise summary of the proposed 
 CAS-RM-80-118 COMMENT 0A

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 of his 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 

so indicating in the letter requesting an 

oral presentation, or by 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 of the hearing. The length of 

each presentation may be limited, based 

on the number of persons requesting to 

be heard. 

A DOE official will be designated to 

preside at the hearing. This will not be 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 of persons 

presenting statements. Any decision 

made by DOE with respect to the 

subject matter of the hearing will be 

lased on all information available to 

DOE. At the conclusion of all initial oral 

statements, each person who has made 

an oral statement will be given the 

opportunity, if he or she so desires, to 

make a rebuttal statement. The rebuttal 

statements will be given in the order in 

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 be presented for 

answer. 

Any further procedural rules needed 

for the proper conduct of the hearing . 

will be announced by the presiding 

officer. 

A transcript of the 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. and 4:00 

p.m., Monday through Friday. In ' 

'Iddition, any person may purchase a 

JPY of this transcript from the reporter. 

D. Regulatory and Environmental 

Renew • 

Pursuant to Section 7(a)(1} of the 

Federal Energy Administration Act of 

1974. a copy of tliis notice has been 

submitted to the Administrator of the 

Environmental Protection Agency for his 

comments concerning the impact of this 

proposal on the quality of the 

environment. No comments have been 

received from ,the AdmiIlistrator. 

In accordance with the requirements 

of the National Environmental Policy 

Act of 1969 (NAPA). 42 U.S.C. 4321 et 

seq .• DOE has evaluated the proposed 

establishment of these Jesting 

procedures for consumer products to 

'determine if an environmental 

assessment (EAl or an environmental 

impact statement (EIS) is required. 

These test procedures will be used only 

to standardize the measurement of 

energy usage for the subject consumer 

products. The action of prescribing these 

test procedures. by itself, will not result 

in any environmental impacts. Thus, it is 

clear that the proposed action is not a 

major Federal action significantly 

affecting the quality of the human 

environment, and neither an EA nor an 

BIS is required. The potential 

environmental impacts that might occur 

from the application of the test 

procedures in connection with DOE's 

minimum energy efficiency standards 

program will be evaluated separately by 

that program. 

The proposed rule has been reviewed 

in accordance with Executive Order 

l2044 and DOE Order 203o.t, and it has 

been determined that the proposal is 

significant in nature but does not have 

major impacts to manufacturers and 

consumers (i.e., would not impose 

annual economic costs of $100 million or more). Consequently, a reg'.tlatory 

analysis has not been prepared for this 

proposed rule. 

In consideration of the foregoing. it is __ proposed to amend Chapter n of Title 

10, Code of Federal Regulations, as set 

forth below. 

Issued in Washin8ton. D.C., July 9.1980. 

T. B. Stelson. 

Assistant Secretary. ConS8l'VrItion and Solar 

Energy. 

PART 430-ENERGY CONSERVATION 

PROGRAM FOR CONSUMER 

PRODUCTS , 

,. 

Provisions of 10 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 of food 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 of food at temperatures 

below 32°F.,but does not provide a 

separate low temperature compartment 

designed for the freezing of and the long 

term storage of food at temperatures 

below 8°F. ,. • . .. ,. 

"Electric refrigerator-freezer" means a 

cabinet which consists of two or more 

compartments with at least one of the 

compartments designed for the 

refrigerated storage of foods at 

temperatures above 32°F. and with at 

least one of the compartments designed 

for the freezing of and the storage of 

. frozen loods at temperatures of S·F. or 

below which may be adjusted by the 

nser to a temperature of o·F. or below. 

The source of refrigeration requires 

single phase. alternating current 

electrical energy input only. 

• ,. ,. ,. ,. 

"Freezer" means a cabinet designed 

as a unit for the storage of food at 

" temperatures of O°F. or below, baving 

the ability to freeze food and having a 

source of refrigeration requiring single 

phase, alternating current energy input 

only. 

• ,. * ,. ,. 

"F.efrigerator" means an eiectric 

refrigerator. 

* • * • • 

"Refrigerator-freezer" means an 

electric refrigerator-freezer. , 2. Section 430.22 paragraphs (a) and 

(b) are revised to read as follows: 

§ 430.22 Teat procedures for meaaurea of 

energy coneumptlon. 

(a) Refrigerators and refrigeratorfreezers. (1) The estimated annual 

operating cost for electric refrigerators 

and electric refrigerator-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 per year. (il) the average percycle energy consumption for the ' 

standard cycle in kilowatt-hours per 

cycle, determined according to 6.2 of 
 CAS-RM-80-118 COMMENT 0A

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 per kilowatt-hour as provided by 

. the Secretary. the resulting product then 

being rounded off to 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 of the 

following three factors: (i) The 

representative average-use cycle of 365 

cycles per year. (ii) half the sum of the· 

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 in the poSition set at the factory 

just prior tQ shipping. each in kilowatthours per cycle, determined according to 

6.2 of Appendix A of this subpart, and 

(iii) the representative average unit cost 

in dollars per kilowatt-hour as provided 

by the Secretary. the resulting product 

then being rounded off to the nearest 

dollar per year. 

(3) The estimated annual operating 

cost for 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 of 365 

. cycles per year. (ii) the average percycle energy consumption for the 

specified cycle type. determined 

according to 6.2 of Appendix A to this 

subpart. and (iii) the representative 

average unit cost in dollars per kilowatthour as provided by the Administrator. 

the resulting product then being 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 of Appendix A of this Bubp8rt, 

divided by (B) the average per-cycle 

energy consumption for 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 off to 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 of this aubpart. divided by 

(B) half the sum of the 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 in the 

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 

being rounded off to the second decimal 

pmoe. 

(.5) Other useful meas\ll'eS of enmgy 

consumption for electric refrigerators 

and electric refrigerator-freezera ahaIJ 

be those measures of energy 

consumption for electric refrigerators 

and electric refrigerator-freezers which 

the Secretary determines are likely to 

assist consumers in making purchasing 

decisions and which are derived from 

the application of App~ A of this 

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 per year, (if) the average percycle energy consumption for the 

standard cycle in kilowatt-hours per 

cycle. determined according to 6.2 of 

Appendix B of this aubpart, and (iii) the 

representative average unit cost in 

dollars per kilowatt-hour as provided by 

the Secretary. the resulting product then . being rounded off to the nearest dollar 

per year. 

(2) The estimated annual operating 

cost for freezers with an anti-sweat 

heater switch shall he the product of the 

following three factors: (i) The 

representative average-use cycle of 365 

cycles per year, (ill half the sum of the 

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 in the position set at the factory. 

each in kilowatt-hours per cycle, 

determined according to 6.2 of Appendix 

B of this subpart. and (iii) the 

representative average unit cost in 

dollars per kilowatt-hour as provided by 

the Secretary. the resulting product then 

being rounded off to the nearest dollar 

per year. 

(3) The estimated annual operating 

cost for any other specified cycle type 

for freezers shall he the product of the 

following three factors: (1) The 

representative average-nse cycle of 365 

cyc.:1es per year, [Ii) the average percycle energy consumption for the 

specified cycle type, determined 

according to 6.2 of Appendix B of this 

subpart, and (ill) the representative 

average unit cost in dollars per kilowatthour as provided by the Secretary, the 

resulting product then being rounded off 

to the nearest dollar per year. 

(4) The energy factor for freezers. 

expressed in cubic feet per kilowatthour per cycle. shall be-

(i) For freezers not having an antisweat heater switch. the quotient of (A) 

the adjusted net refrigerated volume in 

cubic feet. determined according to 6.1 

of Appendix 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 of Appendix B of this 

subpart, the resulting quotient then 

being rounded 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 

of Appendix B of this subpart, divided 

by (B) half the sum of the 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 just prior 

to shipping, each in kilowatt-hours per 

cycle. determined according to 6.2 of 

Appendix B of this subpart. the resulting 

quotient then being rounded off to the 

second decimal place. 

(5) Other useful measures of energy 

consumption for freezers shall be those measures of energy 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 of this subpart. 

• * .. .. .. 

3. Appendix A is revised to read as 

follows: 

Appendix A-UDifonn Test Method for 

Measuring the 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 of ANSI B 38.1-1970. 

1.2 "Adjusted total volume" means the 

IUlD of (i) the fresh food compartment volume 

as defined in HRF-1-1979 in cubic feet. and 

(til the product of an adjustment factor and 

the net freezer compartment volume as 

defined in HRF-l-l979, in cubic feet. 

1.3 "Anti-sweat heater" means a device 

incorporated into the design of a refrigerator 

or refrigerator-freezer to prevent the . 

accumulation of moisture on exterior surfaces 

of the 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 of frozen food at 

temperatures below 32"F (M°C). It may 

include a compartment of 0-25 cubic feet (7.1 

litersl 9f less for freezing and storage of ice. 

1.5 "Cycle" means the period of 24 hours 

for which the energy use of an electric 
 CAS-RM-80-118 COMMENT 0A

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 of test 

conditions having the calculated effect of 

operating an electric refrigerator or electric 

refrigerator-freezer for a period of 24 hoUl'll, 

with the consumer activated controls other 

than those thai control compartment 

temperatures set to esteblish various 

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 of frost on . all refrigerated surfaces. Nominal refrigerated 

food temperatures are maintained during the 

operation of the 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. 

section 7.1 through section 7.4.3.3. except as noted in paragraph 2.3. below. 

2.2 Ambient temperature. The ambient 

temperature of the 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 of dimensions 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 sensor masses shall be supported by non- thermally conductive supports in such a manner that there will be at least one inch 

(2.5 em) of air space separating the thermal mass from contact with any surface. In case of interference 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 if necessary 

to attain a median setting. A second test shaU 

be performed with all controls set either at 

their warmest or their coldest settings. 

whichever is needed to cause the 

compartment temperatures measured by the 

two tests to bracket (i.e .. one is above and " one is below) 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. If the standardized temperature cannot be 

attained even with the extrsme position 

settlns. the measured temperature at the 

extrsme position shall be as close to the 

standardized temperatura as possible. 

t. Test Period 

4.1 Test Period. Tests shall be performed 

by establishin,g the conditions set forth in 

Section 2. and uslDs control settlnss as set 

forth in Section 3. above. 

4.1.1 Nonautomatic Defrost. If no 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 of not 

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 of the motor). If , 110 "ofr' cyclins Will occur. the test period 

shall be thrse hours. If incomplete cyclins 

(less than two compressor cycles) occurs during a 24 hour period. the results of the Z4 

hour period shall be used. 

4.1.2 Thned Automatic Defrost. If a timeInitiated defrost is provided in the device 

belns tested. the test time pertod shallatart 

after stabilization has bean completed and be 

from one point during a defrost period to the same point durin8 the next defrost period. 

4.1.3 Non-Time-Initiated Defrost. If a non- time-Initiated defrost system is provided in 

the model belDs tested. the test time period 

shall consist of two 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' 

of the 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 of HRF-l-l979. No freezer temperature 

measurements need be taken in an aUrefrigerator model. 

If the interior arrangements of the cabinet 

do not conform with those shown in Figure 7-

1 and 7-2 of HRF-l-l979. measurements shall 

be taken at selected locations chosen to 

reprssent approximately the entirs 

refrigerated compartment. The locations 

selected shall be a matter of record. 

5.1.1 Measured Temperature. The 

measured temperature of a compartment ls to 

be the average of all sensor temperature 

rsadings taken in that compartment at a particular time. Measurements shall be taken 

at rsgular intervals not to exceed four 

minutes. 

5.1.2 Compartment Temperature. The 

compartment temperature for each test 

period shall be an average of the measured 

temperetures taken in a compartment during a complet.e cycle or several complete cycles 

of the 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 of the test period specified in 4.1.3. 

5.1.2.1 The number of comprsssor motor 

cycles over which the compartment 

temperature is to be averaged shall be equal 

to the number of minutes between measured 

temperature readings. rounded up to the next 

whole minute. One of the cycles shall be the 

last complete compressor motor cycle during 

the test period. 

5.1.2.2 If no comprss80r motor CYclins occurs. the compartment temperatures shall 

be the average of readings taken during the 

last thirty minutes of the test period. 

5.1.2.3 If incomplete CYclins occurs. the 

compartment temperetures shall be the 

average of all readings taken during the last 

thrse hours of the last complete "on" period. 

5.2 Energy Measurements 

5.2.1 Per-day Energy Consumption. The 

energy consumption in kilowatt-hours per 

day for each test period sball be the energy 

expended during the test period as specified 

in section 4.1 adjusted to a 24 hour period. 

The adjustment shall be determined as follows: 

5.2.1.1 Non automatic and time-initiated 

automatic defrost refrigerators and refrlgeretor~freezer modeis. The energy 

consumption in kilowatt-hours per day shall 

be calculated as: - ET ... EPXl440/T 

wOOrs 

ET==test cycle energy expended in kilowatthours per day. . 

EP==energy expended in kilowatt-hours 

durin8 the test period. 

T == lenath of time of the test period in 

minutes. 

1440=conversion factor 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-energy expended in kilowatt-hours 

during the first part of the test, 

EP2=energy expended in kilowatt-bours per 

day during the second part of the test. 

Tt and T2=length of time in minutes of the 

first and second test parts rsspectively. 

and' 

1440=conversion factor 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: . 
 CAS-RM-80-118 COMMENT 0A

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 of Derived 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 If one of the fresh food 

compartment temperatures measured for a 

test period is greater than 38.0o

P (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 If the fresh food compartment 

temperature is at or below 45'P (7.2·C) in , 

both of the tests and the freezer compartment 

temperature is always at or below 15°P 

(-9.4"C) in both tests of a refrigerator or at 

or below 5"P ( -15'C) in both tests of a refrigerator-freezer. the per-cycle energy 

consumption shall be: 

B=ETl 

where 

B is defined in 6.2.1.1. 

ET is defined in 5.2.1. and 

Number:t indicates the test period during 

which the highest freezer compartment 

temperature was measured. _ 6.2.2.2 If the conditions of 6.2.2.1 do not 

exist. the per-cycle energy consumption shall 

be defined by the higher of the-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-Unlform Test Method for 

Measuring the Energy Consumption of 

Freezers 

1. Definitions. 

1.1 "HRF-l-l979" means the Association 

of Home Appliance Manufacturers standard 

for household refrigerators. combination . 

refrigerator-freezers. and household freezers. 

also approved as an American National 

Standard as a version of ANSI B38.1-1970. 

1.2 "Anti-sweat heater" means a device 

incorporated into the design of a freezer to 

prevent the accumulation of moisture on 

exterior surfaces of the cabinet under 

conditions of high ambient humidity. 

1.3 "Cycle" means the period of 24 hours 

for which the energy use of a 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 of test 

conditions having the calculated effect of 

operating a freezer for a period of 24 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 

consuming position. 

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 of frost on 

all refrigerated surfaces_ Nominal refrigerated 

food temperatures are maintained during the 

operation of the automatic defrost system. 

:i Test 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. If no 

automatic freezer defrost provisions are 

provided on the model being tested. the test 

time period shall start after steady state 

conditions have been reached and be of not . 

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 of the motor). If no "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. If a 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. . 
.. CAS-RM-80-118 COMMENT 0A

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 sensor temperature readmgs taken at a 

particular time. Measurements shall ~ taken 

at regular intervals not to exceed four 

minutes. 

5.1.2 Compartment Temperature. The 

compartment temperature for each test 

period shall be an averBlle of the measured 

temperatures taken dunng a complete cycle 

or several complete cycles of the compressor 

motor (one compressor cycle is one complete 

motor "on" and one complete motor "oft· . period). For non-time-initiated defrost 

models. compartment temperatures shall be 

those measured in the first pari of the test 

period specified in 4.1.3. -

5.1.2.1 The number of compressor motor 

cycles over which the compartment 

temperature is to be avefBlled shall be equal 

to the number of minutes between measured 

temperature readings rounded up to the next 

whole minute. One of the cycles shall be the 

last complete compressor motor cycle d.uriDs 

the test period. 

5.1.2.2 If no compressor motor cycling 

occurs. the compartment temperature shall be 

the avefBlle of readings taken during the last 

thirty minutes of the test period. 

5.1.2.3 If incomplete cycling occurs (less 

than one cycle) the compartment temperature 

shall be the avefBlle of all readings taken 

during the last three hours of the last 

complete "on" period. . 

5.2 Energy Measurements: 

5.2.1 Per-day Energy Consumption. The 

energy consumption in kilowatt-hours per 

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 per day shall be 

calculated as: 

ET"'(EPXl440Xkl/T 

where 

ET=test cycle energy expended in.kilowatthours per day. 

EP=energy expend.ed m kilowatt-hours 

during the test pel'lOO. 

T=length of time of tllE' leat period in 

minutes. 

1440=convenrion factor to adjust to a Z4 hour· 

period in minutes per day. and 

K=correction factOI of 0 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 consumption m 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 of the test, 

PZ=energy expended tn kilowatt-hours per 

day durin8 the second pari of ~e telt. and 

T1 and TZ=length of time in minutes of the 

first and seCond teat parts respectively. 

5.3 Volume mauurements. The electric . 

freezer total refrigerated 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 From Test 

Measurements. 

8.1 Adjusted Total Volume: 

8.1.1 Electric freezers. The ~usted total 

volume. VA. for electric freezers under test 

ahall be defined as: 

VA=VTxCF 

where 

VA=adjusted total volume in cubic feet, 

VI' == total refrigerated volume in cubic feet. 

and 

CF=oorrectiori factor of 1..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 shown below. 

6.2.1.1 H the 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 If one of the freezer compartment 

temperatures measured 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'1 x [0.0-TF1)/ 

(TF2-TF1)) 

where 

E is defined in 6.2.1.1 

ET is defined in 5.2.1 . 

TF =)'reezer compartment temperature ., determined according to 5.1.2 m degrees F. 

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 ...........