Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 83927 

1The petition did not identify any of the 

information contained therein as confidential 

business information. 

administrative process in no way alters 

the legal effect of this document upon 

publication in the Federal Register. 

Signed in Washington, DC, on December 

18, 2020. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

[FR Doc. 2020–28457 Filed 12–22–20; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF ENERGY 

[Case Number 2020–009; EERE–2020–BT– 

WAV–0025] 

Energy Conservation Program: Notice 

of Petition for Waiver of Heat Transfer 

Products Group From the Department 

of Energy Walk-In Coolers and Walk-In 

Freezers Test Procedure and Notice of 

Grant of Interim Waiver 

AGENCY: Office of Energy Efficiency and 

Renewable Energy, Department of 

Energy. 

ACTION: Notification of petition for 

waiver and grant of an interim waiver; 

request for comments. 

SUMMARY: This document announces 

receipt of and publishes a petition for 

waiver and interim waiver from Heat 

Transfer Products Group (‘‘HTPG’’), 

which seeks a waiver for specified 

carbon dioxide (‘‘CO2’’) direct 

expansion unit cooler basic models from 

the U.S. Department of Energy (‘‘DOE’’) 

test procedure used to determine the 

efficiency of walk-in cooler and walk-in 

freezer refrigeration systems. DOE also 

gives notice of an Interim Waiver Order 

that requires HTPG to test and rate the 

specified CO2 direct expansion unit 

cooler basic models in accordance with 

the alternate test procedure set forth in 

the Interim Waiver Order. DOE solicits 

comments, data, and information 

concerning HTPG’s petition and its 

suggested alternate test procedure so as 

to inform DOE’s final decision on 

HTPG’s waiver request. 

DATES: The Interim Waiver Order is 

effective on December 23, 2020. Written 

comments and information will be 

accepted on or before January 22, 2021. 

ADDRESSES: Interested persons are 

encouraged to submit comments using 

the Federal eRulemaking Portal at 

http://www.regulations.gov. 

Alternatively, interested persons may 

submit comments, identified by case 

number ‘‘2020–009’’, and Docket 

number ‘‘EERE–2020–BT–WAV–0025,’’ 

by any of the following methods: 

• Federal eRulemaking Portal: http:// 

www.regulations.gov. Follow the 

instructions for submitting comments. 

• Email: HTPG2020WAV0025@

ee.doe.gov. Include Case No. 2020–009 

in the subject line of the message. 

• Postal Mail: Appliance and 

Equipment Standards Program, U.S. 

Department of Energy, Office of Energy 

Efficiency and Renewable Energy, 

Building Technologies Office, Mail Stop 

EE–5B, Petition for Waiver Case No. 

2020–009, 1000 Independence Avenue 

SW, Washington, DC 20585–0121. If 

possible, please submit all items on a 

compact disc (‘‘CD’’), in which case it is 

not necessary to include printed copies. 

• Hand Delivery/Courier: Appliance 

and Equipment Standards Program, U.S. 

Department of Energy, Building 

Technologies Office, 950 L’Enfant Plaza 

SW, 6th floor, Washington, DC 20024. 

Telephone: (202) 287–1445. If possible, 

please submit all items on a CD, in 

which case it is not necessary to include 

printed copies. 

No telefacsimilies (‘‘faxes’’) will be 

accepted. For detailed instructions on 

submitting comments and additional 

information on this process, see the 

SUPPLEMENTARY INFORMATION section of 

this document. 

Docket: The docket, which includes 

Federal Register notices, comments, 

and other supporting documents/ 

materials, is available for review at 

http://www.regulations.gov. All 

documents in the docket are listed in 

the http://www.regulations.gov index. 

However, some documents listed in the 

index, such as those containing 

information that is exempt from public 

disclosure, may not be publicly 

available. 

The docket web page can be found at 

http://www.regulations.gov/ 

docket?D=EERE-2020-BT-WAV-0025. 

The docket web page contains 

instruction on how to access all 

documents, including public comments, 

in the docket. See the SUPPLEMENTARY

INFORMATION section for information on 

how to submit comments through 

http://www.regulations.gov. 

FOR FURTHER INFORMATION CONTACT: Ms. 

Lucy deButts, U.S. Department of 

Energy, Office of Energy Efficiency and 

Renewable Energy, Building 

Technologies Office, Mail Stop EE–5B, 

1000 Independence Avenue SW, 

Washington, DC 20585–0121. Email: 

AS_Waiver_Request@ee.doe.gov. 

Michael Kido, U.S. Department of 

Energy, Office of the General Counsel, 

Mail Stop GC–33, Forrestal Building, 

1000 Independence Avenue SW, 

Washington, DC 20585–0103. 

Telephone: (202) 586–8145. Email: 

Michael.Kido@hq.doe.gov. 

SUPPLEMENTARY INFORMATION: DOE is 

publishing HTPG’s petition for waiver 

in its entirety, pursuant to 10 CFR 

431.401(b)(1)(iv).1 DOE invites all 

interested parties to submit in writing 

by January 22, 2021, comments and 

information on all aspects of the 

petition, including the alternate test 

procedure. Pursuant to 10 CFR 

431.401(d), any person submitting 

written comments to DOE must also 

send a copy of such comments to the 

petitioner. The contact information for 

the petitioner is Michael Straub, 

mike.straub@htpg.com, 201 Thomas 

French Dr., Scottsboro, AL 35769–7405. 

Submitting comments via http://

www.regulations.gov. The http://

www.regulations.gov web page will 

require you to provide your name and 

contact information. Your contact 

information will be viewable to DOE 

Building Technologies staff only. Your 

contact information will not be publicly 

viewable except for your first and last 

names, organization name (if any), and 

submitter representative name (if any). 

If your comment is not processed 

properly because of technical 

difficulties, DOE will use this 

information to contact you. If DOE 

cannot read your comment due to 

technical difficulties and cannot contact 

you for clarification, DOE may not be 

able to consider your comment. 

However, your contact information 

will be publicly viewable if you include 

it in the comment or in any documents 

attached to your comment. Any 

information that you do not want to be 

publicly viewable should not be 

included in your comment, nor in any 

document attached to your comment. If 

this instruction is followed, persons 

viewing comments will see only first 

and last names, organization names, 

correspondence containing comments, 

and any documents submitted with the 

comments. 

Do not submit to http://

www.regulations.gov information for 

which disclosure is restricted by statute, 

such as trade secrets and commercial or 

financial information (hereinafter 

referred to as Confidential Business 

Information (‘‘CBI’’)). Comments 

submitted through http://

www.regulations.gov cannot be claimed 

as CBI. Comments received through the 

website will waive any CBI claims for 

the information submitted. For 

information on submitting CBI, see the 

Confidential Business Information 

section. 

DOE processes submissions made 

through http://www.regulations.gov 

before posting. Normally, comments 


jbell on DSKJLSW7X2PROD with NOTICES
83928 Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 

1All references to EPCA in this document refer 

to the statute as amended through America’s Water 

Infrastructure Act of 2018, Public Law 115–270 

(Oct. 23, 2018). 

2For editorial reasons, upon codification in the 

U.S. Code, Part C was redesignated as Part A–1. 

will be posted within a few days of 

being submitted. However, if large 

volumes of comments are being 

processed simultaneously, your 

comment may not be viewable for up to 

several weeks. Please keep the comment 

tracking number that http://

www.regulations.gov provides after you 

have successfully uploaded your 

comment. 

Submitting comments via email, hand 

delivery/courier, or postal mail. 

Comments and documents submitted 

via email, hand delivery/courier, or 

postal mail also will be posted to http:// 

www.regulations.gov. If you do not want 

your personal contact information to be 

publicly viewable, do not include it in 

your comment or any accompanying 

documents. Instead, provide your 

contact information on a cover letter. 

Include your first and last names, email 

address, telephone number, and 

optional mailing address. The cover 

letter will not be publicly viewable as 

long as it does not include any 

comments. 

Include contact information each time 

you submit comments, data, documents, 

and other information to DOE. If you 

submit via postal mail or hand delivery/ 

courier, please provide all items on a 

CD, if feasible, in which case it is not 

necessary to submit printed copies. 

Faxes will not be accepted. 

Comments, data, and other 

information submitted to DOE 

electronically should be provided in 

PDF (preferred), Microsoft Word or 

Excel, WordPerfect, or text (ASCII) file 

format. Provide documents that are not 

secured, written in English and free of 

any defects or viruses. Documents 

should not contain special characters or 

any form of encryption and, if possible, 

they should carry the electronic 

signature of the author. 

Campaign form letters. Please submit 

campaign form letters by the originating 

organization in batches of between 50 to 

500 form letters per PDF or as one form 

letter with a list of supporters’ names 

compiled into one or more PDFs. This 

reduces comment processing and 

posting time. 

Confidential Business Information. 

According to 10 CFR 1004.11, any 

person submitting information that he 

or she believes to be confidential and 

exempt by law from public disclosure 

should submit via email, postal mail, or 

hand delivery/courier two well-marked 

copies: One copy of the document 

marked confidential including all the 

information believed to be confidential, 

and one copy of the document marked 

‘‘non-confidential’’ with the information 

believed to be confidential deleted. 

Submit these documents via email or on 

a CD, if feasible. DOE will make its own 

determination about the confidential 

status of the information and treat it 

according to its determination. 

It is DOE’s policy that all comments 

may be included in the public docket, 

without change and as received, 

including any personal information 

provided in the comments (except 

information deemed to be exempt from 

public disclosure). 

Signing Authority 

This document of the Department of 

Energy was signed on November 24, 

2020, by Alexander N. Fitzsimmons, 

Deputy Assistant Secretary for Energy 

Efficiency, Energy Efficiency and 

Renewable Energy, pursuant to 

delegated authority from the Secretary 

of Energy. That document with the 

original signature and date is 

maintained by DOE. For administrative 

purposes only, and in compliance with 

requirements of the Office of the Federal 

Register, the undersigned DOE Federal 

Register Liaison Officer has been 

authorized to sign and submit the 

document in electronic format for 

publication, as an official document of 

the Department of Energy. This 

administrative process in no way alters 

the legal effect of this document upon 

publication in the Federal Register. 

Signed in Washington, DC, on November 

24, 2020. 

Treena V. Garrett, 

Federal Register Liaison Officer, U.S. 

Department of Energy. 

Case Number 2020–009 

Interim Waiver Order 

I. Background and Authority 

The Energy Policy and Conservation 

Act, as amended (‘‘EPCA’’),1 authorizes 

the U.S. Department of Energy (‘‘DOE’’) 

to regulate the energy efficiency of a 

number of consumer products and 

certain industrial equipment (42 U.S.C. 

6291–6317). Title III, Part C2 of EPCA 

(42 U.S.C. 6311–6316, as codified), 

added by the National Energy 

Conservation Policy Act, Public Law 

95–619, sec. 441 (Nov. 9, 1978), 

established the Energy Conservation 

Program for Certain Industrial 

Equipment, which sets forth a variety of 

provisions designed to improve the 

energy efficiency for certain types of 

industrial equipment. Through 

amendments brought about by the 

Energy Independence and Security Act 

of 2007, Public Law 110–140, sec. 312 

(Dec. 19, 2007), this equipment includes 

walk-in cooler and walk-in freezer 

(collectively, ‘‘walk-in’’) refrigeration 

systems, the focus of this document (42 

U.S.C. 6311(1)(G)). 

The energy conservation program 

under EPCA consists essentially of four 

parts: (1) Testing, (2) labeling, (3) 

Federal energy conservation standards, 

and (4) certification and enforcement 

procedures. Relevant provisions of 

EPCA include definitions (42 U.S.C. 

6311), energy conservation standards 

(42 U.S.C. 6313), test procedures (42 

U.S.C. 6314), labeling provisions (42 

U.S.C. 6315), and the authority to 

require information and reports from 

manufacturers (42 U.S.C. 6316). 

The Federal testing requirements 

consist of test procedures that 

manufacturers of covered equipment 

must use as the basis for: (1) Certifying 

to DOE that their equipment complies 

with the applicable energy conservation 

standards adopted pursuant to EPCA (42 

U.S.C. 6316(a); 42 U.S.C. 6295(s)), and 

(2) making representations about the 

efficiency of that equipment (42 U.S.C. 

6314(d)). Similarly, DOE must use these 

test procedures to determine whether 

the covered equipment complies with 

relevant standards promulgated under 

EPCA. (42 U.S.C. 6316(a); 42 U.S.C. 

6295(s)) 

Under 42 U.S.C. 6314, EPCA sets forth 

the criteria and procedures DOE is 

required to follow when prescribing or 

amending test procedures for covered 

equipment. EPCA requires that any test 

procedures prescribed or amended 

under this section must be reasonably 

designed to produce test results which 

reflect the energy efficiency, energy use 

or estimated annual operating cost of 

covered equipment during a 

representative average use cycle and 

requires that test procedures not be 

unduly burdensome to conduct (42 

U.S.C. 6314(a)(2)). The test procedure 

for walk-in refrigeration systems is 

contained in the Code of Federal 

Regulations (‘‘CFR’’) at 10 CFR part 431, 

subpart R, appendix C, Uniform Test 

Method for the Measurement of Net 

Capacity and AWEF of Walk-In Cooler 

and Walk-In Freezer Refrigeration 

Systems (‘‘Appendix C’’). 

Under 10 CFR 431.401, any interested 

person may submit a petition for waiver 

from DOE’s test procedure 

requirements. DOE will grant a waiver 

from the test procedure requirements if 

DOE determines either that the basic 

model for which the waiver was 

requested contains a design 

characteristic that prevents testing of the 

basic model according to the prescribed 

test procedures, or that the prescribed 


jbell on DSKJLSW7X2PROD with NOTICES
Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 83929 

3A notation in the form ‘‘HTPG, No.1’’ identifies 

a written submission: (1) Made by HTPG; and (2) 

recorded in document number 1 that is filed in the 

docket of this petition for waiver (Docket No. 

EERE–2020–BT–WAV–0025) and available at 

http://www.regulations.gov/docket?D=EERE-2020- 

BT-WAV-0025. 

4The test procedure specifies the unit cooler 

refrigerant inlet condition in terms of a saturation 

temperature (the temperature at which it completes 

the condensation process in a condenser) and the 

subcooling temperature (additional reduction in 

temperature lower than the specified saturation 

temperature). For CO2, the critical temperature 

above which there cannot exist separate liquid and 

gas phases is below the saturation condition 

specified in the test procedure, hence the specified 

condition cannot be achieved. 

5Absolute pressure is the pressure measured 

relative to a complete vacuum; ‘‘psia’’ represents 

the absolute pressure in pounds per square inch. 

test procedures evaluate the basic model 

in a manner so unrepresentative of its 

true energy consumption characteristics 

as to provide materially inaccurate 

comparative data. 10 CFR 431.401(f)(2). 

A petitioner must include in its petition 

any alternate test procedures known to 

the petitioner to evaluate the 

performance of the equipment type in a 

manner representative of the energy 

consumption characteristics of the basic 

model. 10 CFR 431.401(b)(1)(iii). DOE 

may grant the waiver subject to 

conditions, including adherence to 

alternate test procedures specified by 

DOE. 10 CFR 431.401(f)(2). 

As soon as practicable after the 

granting of any waiver, DOE will 

publish in the Federal Register a notice 

of proposed rulemaking to amend its 

regulations so as to eliminate any need 

for the continuation of such waiver. 10 

CFR 431.401(l). As soon thereafter as 

practicable, DOE will publish in the 

Federal Register a final rule to that 

effect. Id. 

The waiver process also provides that 

DOE may grant an interim waiver if it 

appears likely that the underlying 

petition for waiver will be granted and/ 

or if DOE determines that it would be 

desirable for public policy reasons to 

grant immediate relief pending a 

determination on the underlying 

petition for waiver. 10 CFR 

431.401(e)(2). Within one year of 

issuance of an interim waiver, DOE will 

either: (i) Publish in the Federal 

Register a determination on the petition 

for waiver; or (ii) publish in the Federal 

Register a new or amended test 

procedure that addresses the issues 

presented in the waiver. 10 CFR 

431.401(h)(1). 

When DOE amends the test procedure 

to address the issues presented in a 

waiver, the waiver will automatically 

terminate on the date on which use of 

that test procedure is required to 

demonstrate compliance. 10 CFR 

431.401(h)(2). 

II. HTPG’s Petition for Waiver and 

Interim Waiver 

On July 6, 2020, HTPG filed a petition 

for waiver and interim waiver from the 

test procedure for walk-in refrigeration 

systems set forth at 10 CFR part 431, 

subpart R, appendix C (HTPG, No. 1 at 

p. 1 3). HTPG claims that the test 

conditions described in Table 15 and 

Table 16 of the Air-Conditioning, 

Heating, and Refrigeration Institute 

(‘‘AHRI’’) Standard 1250–2009, 

Standard for Performance Rating of 

Walk-In Coolers and Freezers (‘‘AHRI 

1250–2009’’) (for walk-in refrigerator 

unit coolers and freezer unit coolers 

tested alone, respectively), as 

incorporated by Appendix C with 

modification, cannot be achieved by the 

specified basic models and are not 

consistent with operation of HTPG’s 

CO2 direct expansion unit coolers . 

HTPG stated that CO2 has a critical 

temperature of 87.8 °F,4 and thus the 

required liquid inlet saturation 

temperature of 105 °F and the required 

liquid inlet subcooling temperature of 9 

°F are not achievable, and that the test 

conditions should be more consistent 

with typical operating conditions for a 

transcritical CO2 booster system (HTPG, 

No. 1). 

The statements made by HTPG 

reference the difference in 

thermodynamic properties between CO2

and other refrigerants. At modest 

pressures (i.e. below the critical point), 

many substances transition from a solid 

to a liquid to a gas as temperature 

increases. For example, a pure 

substance like water transitions from 

liquid to steam at a specific 

temperature, e.g. 212 °F, at atmospheric 

pressure. As heat is added during a 

liquid to gas transition, the temperature 

remains constant and the substance 

coexists as both liquid and vapor. 

Continuing to add heat converts more of 

the liquid to vapor at a constant 

temperature. The reverse occurs when 

heat is removed. However, the transition 

temperature depends on the pressure— 

the higher the pressure, the higher the 

transition temperature. This is a key 

principle in refrigeration systems, 

which operate at two pressure levels 

associated with two temperatures. A 

refrigerant absorbs heat when it is at a 

low temperature and pressure, 

converting to gas and cooling the 

surrounding space. At high temperature 

and pressure, the refrigerant transitions 

to a liquid while releasing heat to the 

environment. A compressor is used to 

raise the low-pressure gas to a high 

pressure, and a throttle (pressure 

reduction device) is used to reduce the 

pressure once the refrigerant has been 

fully liquefied (condensed) at high 

pressure. 

All refrigerants have a ‘‘critical 

pressure’’ and an associated ‘‘critical 

temperature’’ above which liquid and 

vapor phases cannot coexist. Above this 

critical point, the refrigerant will be a 

gas and its temperature will increase or 

decrease as heat is added or removed. 

For all conventional refrigerants, the 

critical pressure is so high that it is 

never exceeded in typical refrigeration 

cycles. For example, R404A is a 

common refrigerant used in refrigeration 

systems that has a critical pressure of 

540.8 psia 5 with an associated critical 

temperature of 161.7 °F. However, CO2

behaves differently, with a critical 

pressure of 1,072 psia associated with a 

much lower critical temperature of 87.8 

°F. The refrigerant temperature must be 

somewhat higher than the ambient 

temperature in order to reject 

refrigeration cycle heat to the ambient 

environment. Ambient temperatures 

greater than 87.8 °F are common and the 

performance of many refrigeration and 

air conditioning systems are tested 

using a 95 °F ambient temperature, as 

indicated by the A test condition in 

AHRI 1250–2009 Section 5. At 

temperatures greater than the critical 

temperature, the CO2 refrigerant is in a 

supercritical state (i.e. a condition with 

pressure above the critical temperature) 

and heat is transferred to the 

environment. Since useful cooling is 

provided below the critical temperature, 

CO2 cycles are said to be transcritical. 

The transcritical nature of CO2

generally requires more complex 

refrigeration cycle design to approach 

the efficiency of traditional refrigerants 

(i.e., R404A, R407A, R448A, etc.) during 

operation in high temperature 

conditions. To increase efficiency and 

prevent overheating, transcritical 

booster systems introduce (or use) 

multiple stages of compression and 

intercooling. CO2 is cooled in the gas 

cooler of a transcritical booster system, 

then expands through a high-pressure 

control valve and is delivered to a 

subcritical-pressure flash tank. In the 

flash tank, the refrigerant is in the 

subcritical phase and the liquid and 

vapor phases can be separated. A unit 

cooler in a CO2 booster system would be 

supplied with liquid refrigerant from 

the flash tank via expansion valves 

where the refrigerant is evaporated. The 

evaporated refrigerant is subsequently 

compressed up to gas cooler pressure to 

complete the cycle (HTPG, No. 2). 


jbell on DSKJLSW7X2PROD with NOTICES
83930 Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 

HTPG also requests an interim waiver 

from the existing DOE test procedure. 

DOE will grant an interim waiver if it 

appears likely that the petition for 

waiver will be granted, and/or if DOE 

determines that it would be desirable for 

public policy reasons to grant 

immediate relief pending a 

determination of the petition for waiver. 

See 10 CFR 431.401(e)(2). 

Based on the assertions in the 

petition, absent an interim waiver, the 

prescribed test procedure is not 

appropriate for HTPG’s CO2 direct 

expansion unit coolers and the test 

conditions are not achievable, since CO2

refrigerant has a critical temperature of 

87.8 °F and the current DOE test 

procedure calls for a liquid inlet 

saturation temperature of 105 °F. The 

inability to achieve test conditions for 

the stated basic models would result in 

economic hardship from loss of sales 

stemming from the inability of the DOE 

test procedure to address the operating 

conditions of HTPG’s equipment. 

III. Requested Alternate Test Procedure 

EPCA requires that manufacturers use 

the applicable DOE test procedures 

when making representations about the 

energy consumption and energy 

consumption costs of covered 

equipment (42 U.S.C. 6314(d)). 

Consistency is important when making 

representations about the energy 

efficiency of equipment, including 

when demonstrating compliance with 

applicable DOE energy conservation 

standards. Pursuant to 10 CFR 431.401, 

and after consideration of public 

comments on the petition, DOE may 

establish in a subsequent Decision and 

Order an alternate test procedure for the 

basic models addressed by the Interim 

Waiver Order. 

HTPG seeks to test and rate specific 

CO2 direct expansion unit cooler basic 

models with modifications to the DOE 

test procedure. HTPG’s suggested 

approach specifies using modified 

liquid inlet saturation and liquid inlet 

subcooling temperatures—38°F and 5°F, 

respectively, for both walk-in 

refrigerator unit coolers and walk-in 

freezer unit coolers. Additionally, HTPG 

recommends that because the subject 

units are used in transcritical CO2

booster systems the calculations in 

AHRI 1250–2009 section 7.9 should be 

used to determine AWEF and net 

capacity for unit coolers matched to 

parallel rack systems as required under 

the DOE test procedure. This section of 

AHRI 1250–2009 is prescribed by the 

DOE test procedure for determining 

AWEF for all unit coolers tested alone 

(see 10 CFR part 431, subpart R, 

appendix C, section 3.3.1). Finally, 

HTPG also recommends that AHRI 

1250–2009 Table 17, EER for Remote 

Commercial Refrigerated Display 

Merchandisers and Storage Cabinets, 

should be used to determine power 

consumption of CO2 direct expansion 

unit cooler systems as required under 

the DOE test procedure. 

IV. Interim Waiver Order 

DOE has reviewed HTPG’s 

application, its suggested testing 

approach, industry materials regarding 

CO2 transcritical booster systems, and 

HTPG’s consumer-facing materials, 

including websites and product 

specification sheets for the basic models 

listed in HTPG’s petition. Based on this 

review, the suggested testing approach 

appears to allow for the accurate 

measurement of energy efficiency of the 

specified basic models, while alleviating 

the testing issues associated with 

HTPG’s implementation of walk-in 

cooler and walk-in freezer testing for 

these basic models. Review of the CO2

refrigeration market confirms that the 

test conditions of the testing approach 

suggested by HTPG would be 

representative for operation of a unit 

cooler used in a transcritical CO2

booster system (HTPG, No. 4). CO2 that 

is cooled in the gas cooler of a 

transcritical booster system expands 

through a high-pressure control valve 

that delivers CO2 to a subcriticalpressure flash tank, where liquid and 

vapor phases of the refrigerant are 

separated. The liquid is then split and 

the unit coolers receive the refrigerant at 

the same condition, consistent with the 

use of the same liquid inlet saturation 

temperature for both the medium- and 

low-temperature systems in HTPG’s 

suggested test approach. Calculations on 

other external CO2 refrigeration system 

designs in the market indicate that the 

38 °F liquid unit cooler inlet saturation 

temperature suggested by HTPG is 

representative of CO2 booster systems 

(HTPG, No. 2). Regarding use of the EER 

values in AHRI 1250–2009 Table 17 to 

determine the representative 

compressor power consumption for CO2

unit cooler systems, research into the 

performance of different configurations 

of CO2 booster systems shows that 

enhanced CO2 cycles (like those used in 

transcritical booster systems) can match 

conventional refrigerants in average 

annual efficiency (HTPG, No. 3). These 

data and studies help to justify the use 

of the EER values in AHRI 1250–2009 

Table 17 for determining the power 

consumption of CO2 booster system 

evaporators, even though these EER 

values were initially established for 

conventional refrigerants. Consequently, 

DOE has determined that HTPG’s 

petition for waiver likely will be 

granted. Furthermore, DOE has 

determined that it is desirable for public 

policy reasons to grant HTPG immediate 

relief pending a determination of the 

petition for waiver. 

For the reasons stated, it is ordered 

that: 

(1) HTPG must test and rate the 

following CO2 direct expansion unit 

cooler basic models with the alternate 

test procedure set forth in paragraph (2). 

Russell branded Basic Model 

Numbers: 

RL6A041ADAF RL6A041DDAF RL6A052ADAF RL6A052DDAF RL6A066ADAF RL6A066DDAF 

RL6A073ADAF RL6A073DDAF RL6A094ADAF RL6A094DDAF RL6A117ADAF PL6A117DDAF 

RL6A130ADAF RL6A130DDAF RL6A141ADAF RL6A141DDAF RL6A161ADAF RL6A161DDAF 

RL6A181ADAF RL6A181DDAF RL6A195ADAF RL6A195DDAF RL6A235ADAF RL6A235DDAF 

RL6A260ADAF RL6A260DDAF RL6A295ADAF RL6A295DDAF RL6A330ADAF RL6A330DDAF 

RL6A390ADAF RL6A390DDAF RL6E035DDAF RL6E042DDAF RL6E049DDAF RL6E066DDAF 

RL6E077DDAF RL6E090DDAF RL6E105DDAF RL6E121DDAF RL6E142DDAF RL6E162DDAF 

RL6E182DDAF RL6E200DDAF RL6E200EDAF RL6E244DDAF RL6E244EDAF RL6E281DDAF 

RL6E281EDAF RL4E027DDAF RL4E032DDAF RL4E038DDAF RL4E051DDAF RL4E064DDAF 

RL4E080DDAF RL4E094DDAF RL4E110DDAF RL4E125DDAF RL4E141DDAF RL4E155DDAF 

RL4E155EDAF RL4E195DDAF RL4E195EDAF RL4E230DDAF RL4E230EDAF 

RM6A182ADAF RM6A182DDAF RM6A182FDAF RM6A220ADAF RM6A220DDAF RM6A220FDAF 

RM6A276ADAF RM6A276DDAF RM6A276FDAF RM6A370ADAF RM6A370DDAF RM6A370FDAF 

RM6A442ADAF RM6A442DDAF RM6A442FDAF RM6A549ADAF RM6A549DDAF RM6A549FDAF 

RM6A658ADAF RM6A658DDAF RM6A658FDAF RM6E153DDAF RM6E153EDAF RM6E153FDAF 

RM6E153GDAF RM6E184DDAF RM6E184EDAF RM6E184FDAF RM6E184GDAF RM6E311DDAF 

RM6E311EDAF RM6E311FDAF RM6E311GDAF RM6E374DDAF RM6E374EDAF RM6E374FDAF 

RM6E374GDAF RM6E469EDAF RM6E469FDAF RM6E469GDAF RM6E564EDAF RM6E564FDAF 


jbell on DSKJLSW7X2PROD with NOTICES
Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 83931 

RM6E564GDAF RM4E110DDAF RM4E110EDAF RM4E110FDAF RM4E110GDAF RM4E143DDAF 

RM4E143EDAF RM4E143FDAF RM4E143GDAF RM4E232DDAF RM4E232EDAF RM4E232FDAF 

RM4E232GDAF RM4E288DDAF RM4E288EDAF RM4E288FDAF RM4E288GDAF RM4E336EDAF 

RM4E336FDAF RM4E336GDAF RM4E419EDAF RM4E419FDAF RM4E419GDAF 

RV6A043ADAF RV6A043DDAF RV6A053ADAF RV6A053DDAF RV6A085ADAF RV6A085DDAF 

RV6A106ADAF RV6A106DDAF RV6A129ADAF RV6A129DDAF RV6A158ADAF RV6A158DDAF 

RV6A176ADAF RV6A176DDAF RV6A218ADAF RV6A218DDAF RV6A271ADAF RV6A271DDAF 

RV6E043DDAF RV6E053DDAF RV6E085DDAF RV6E106DDAF RV6E129DDAF RV6E158DDAF 

RV6E176DDAF RV6E218DDAF RV6E271DDAF 

ASLA25048ADAF ASLA25048DDAF ASLA25061ADAF ASLA25061DDAF ASLA35073ADAF ASLA35073DDAF 

ASLA45098ADAF ASLA45098DDAF ASLA55122ADAF ASLA55122DDAF ASLA65158ADAF ASLA65158DDAF 

ASLE25048DDAF ASLE25058DDAF ASLE35070DDAF ASLE45094DDAF ASLE55117DDAF ASLE65150DDAF 

RE6A041ADAF RE6A041DDAF RE6A070ADAF RE6A070DDAF RE6A084ADAF RE6A084DDAF 

RE6A104ADAF RE6A104DDAF RE6A128ADAF RE6A128DDAF RE6A141ADAF RE6A141DDAF 

RE6A169ADAF RE6A169DDAF RE6A204ADAF RE6A204DDAF RE6A258ADAF RE6A258DDAF 

RE6E037DDAF RE6E045DDAF RE6E075DDAF RE6E089DDAF RE6E108DDAF RE6E125DDAF 

RE6E137DDAF RE6E182DDAF RE6E221DDAF RE6E278DDAF RE4E037DDAF RE4E075DDAF 

RE4E107DDAF RE4E149DDAF RE4E186DDAF RE4E234DDAF 

RH6A031DDAF RH6A031FDAF RH6A043DDAF RH6A043FDAF RH6A052DDAF RH6A052FDAF 

RH6A063DDAF RH6A063FDAF RH6A087DDAF RH6A087FDAF RH6A105DDAF RH6A105FDAF 

RH6A132DDAF RH6A132FDAF RH6A156DDAF RH6A156FDAF RH6A175DDAF RH6A175FDAF 

RH6A209DDAF RH6A209FDAF RH6E033DDAF RH6E033EDAF RH6E033FDAF RH6E033GDAF 

RH6E044DDAF RH6E044EDAF RN6E044FDAF RH6E044GDAF RH6E053DDAF RH6E053EDAF 

RH6E053FDAF RH6E053GDAF RH6E066DDAF RH6E066EDAF RH6E066FDAF RH6E066GDAF 

RH6E089DDAF RH6E089EDAF RH6E089FDAF RH6E089GDAF RH6E109DDAF RH6E109EDAF 

RH6E109FDAF RH6E109GDAF RH6E134DDAF RH6E134EDAF RH6E134FDAF RH6E134GDAF 

RH6E163DDAF RH6E163EDAF RH6E163FDAF RH6E163GDAF RH6E199DDAF RH6E199EDAF 

RH6E199FDAF RH6E199GDAF RH4E035DDAF RH4E035EDAF RH4E035FDAF RH4E035GDAF 

RH4E044DDAF RH4E044EDAF RH4E044FDAF RH4E044GDAF RH4E071DDAF RH4E071EDAF 

RH4E071FDAF RH4E071GDAF RH4E087DDAF RH4E087EDAF RH4E087FDAF RH4E087GDAF 

RH4E107DDAF RH4E107EDAF RH4E107FDAF RH4E107GDAF RH4E131DDAF RH4E131EDAF 

RH4E131FDAF RH4E131GDAF RH4E167DDAF RH4E167EDAF RH4E167FDAF RH4E167GDAF 

(2) The HTPG basic models identified 

in paragraph (1) of this Interim Waiver 

Order shall be tested according to the 

test procedure for walk-in cooler and 

walk-in freezer refrigeration systems 

prescribed by DOE at 10 CFR part 431, 

subpart R, appendix C (‘‘Appendix C’’), 

except that the liquid inlet saturation 

temperature test condition and liquid 

inlet subcooling temperature test 

condition shall be modified to 38°F and 

5°F, respectively, for both walk-in 

refrigerator unit coolers and walk-in 

freezer unit coolers, as detailed below. 

All other requirements of Appendix C 

and DOE’s regulations remain 

applicable. 

In Appendix C, under section 3.1. 

General modifications: Test Conditions 

and Tolerances, revise section 3.1.5., to 

read as follows: 

3.1.5. Tables 15 and 16 shall be 

modified to read as follows: 

TABLE 15—REFRIGERATOR UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. 35 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

35 <50 25 38 5 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Note: Superheat to be set according to equipment specification in equipment or installation manual. If no superheat specification is given, a default superheat value 

of 6.5 °F shall be used. The superheat setting used in the test shall be reported as part of the standard rating. 

TABLE 16—FREEZER UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. ¥10 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

¥10 <50 ¥20 38 5 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Defrost ........................ ¥10 Various .................... .................... .................... Compressor Off .. Test according to Appendix C Section C11. 

Note: Superheat to be set according to equipment specification in equipment or installation manual. If no superheat specification is given, a default superheat value 

of 6.5 °F shall be used. The superheat setting used in the test shall be reported as part of the standard rating. 


jbell on DSKJLSW7X2PROD with NOTICES
83932 Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 

(3) Representations. HTPG may not 

make representations about the energy 

efficiency of a basic model listed in 

paragraph (1) of this Interim Waiver 

Order for compliance, marketing, or 

other purposes unless the basic model 

has been tested in accordance with the 

provisions set forth in this alternate test 

procedure and such representations 

fairly disclose the results of such 

testing. 

(4) This Interim Waiver Order shall 

remain in effect according to the 

provisions of 10 CFR 431.401. 

(5) This Interim Waiver Order is 

issued on the condidion that the 

statements and representations provided 

by HTPG are valid. If HTPG makes any 

modifications to the controls or 

configurations of a basic model subject 

to this Interim Waiver Order, such 

modifications will render the waiver 

invalid with respect to that basic model, 

and HTPG will either be required to use 

the current Federal test method or 

submit a new application for a test 

procedure waiver. DOE may rescind or 

modify this waiver at any time if it 

determines the factual basis underlying 

the petition for the Interim Waiver 

Order is incorrect, or the results from 

the alternate test procedure are 

unrepresentative of the basic model’s 

true energy consumption characteristics. 

10 CFR 431.401(k)(1). Likewise, HTPG 

may request that DOE rescind or modify 

the Interim Waiver Order if HTPG 

discovers an error in the information 

provided to DOE as part of its petition, 

determines that the interim waiver is no 

longer needed, or for other appropriate 

reasons. 10 CFR 431.401(k)(2). 

(6) Issuance of this Interim Waiver 

Order does not release HTPG from the 

applicable requirements set forth at 10 

CFR part 429. 

DOE makes decisions on waivers and 

interim waivers for only those basic 

models specifically set out in the 

petiion, not future models that may be 

manufactured by the petitioner. HTPG 

may submit a new or amended petition 

for waiver and rerquest for grant of 

interim waiver, as appropriate, for 

additional basic models of CO2 direct 

expansion unit coolers. Alternatively, if 

appropriate, HTPG may rerquest that 

DOE extend the scope of a waiver or an 

interim waiver to include additional 

basic models employing the same 

technology as the basic model(s) set 

forth in the original petition consistent 

with 10 CFR 431.401(g). 

Signed in Washington, DC, on November 

24, 2020. 

Alexander N. Fitzsimmons, 

Deputy Assistant Secretary for Energy 

Efficiency, Energy Efficiency and Renewable 

Energy. 

BILLING CODE 6450–01–P 


jbell on DSKJLSW7X2PROD with NOTICES
Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 83933 

BILLING CODE 6450–01–C 

July 6, 2020 

The design characteristics 

constituting the grounds for the Waiver 

and Interim Waiver Application: 

• Appendix C to Subpart R of Part 

431—Uniform Test Method for the 

Measurement of Net Capacity and 

AWEF of Walk-in Cooler and Walk-in 

Freezer Refrigeration Systems specifies 

that unit coolers tested alone use the 

test procedures described in AHRI 

1250–2009. Table 15 and Table 16 of 

AHRI 1250–2009 are as follows: 


jbell on DSKJLSW7X2PROD with NOTICESEN23DE20.006</GPH>
83934 Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 

TABLE 15—REFRIGERATOR UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. 35 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

35 <50 25 105 9 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Refrigeration Capacity 

Suction B.

35 <50 20 105 9 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

TABLE 16—FREEZER UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. ¥10 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

¥10 <50 ¥20 105 9 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Refrigeration Capacity 

Suction B.

¥10 <50 ¥26 105 9 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Defrost ........................ ¥10 Various .................... .................... .................... Compressor Off .. Test according to Appendix C Section C11. 

• CO2 refrigerant has a critical 

temperature of 87.8 °F thus the liquid 

inlet saturation temperature of 105 °F 

and the liquid inlet subcooling 

temperature of 9 °F as specified in Table 

15 and Table 16 are not achievable. 

• The test condition values need to be 

more in line with typical operating 

conditions for a transcritical CO2

booster system. 

Basic Models on which the Waiver 

and Interim Waiver is being requested 

(All Russell Brand): 

RL6A041ADAF RL6A041DDAF RL6A052ADAF RL6A052DDAF RL6A066ADAF RL6A066DDAF 

RL6A073ADAF RL6A073DDAF RL6A094ADAF RL6A094DDAF RL6A117ADAF PL6A117DDAF 

RL6A130ADAF RL6A130DDAF RL6A141ADAF RL6A141DDAF RL6A161ADAF RL6A161DDAF 

RL6A181ADAF RL6A181DDAF RL6A195ADAF RL6A195DDAF RL6A235ADAF RL6A235DDAF 

RL6A260ADAF RL6A260DDAF RL6A295ADAF RL6A295DDAF RL6A330ADAF RL6A330DDAF 

RL6A390ADAF RL6A390DDAF RL6E035DDAF RL6E042DDAF RL6E049DDAF RL6E066DDAF 

RL6E077DDAF RL6E090DDAF RL6E105DDAF RL6E121DDAF RL6E142DDAF RL6E162DDAF 

RL6E182DDAF RL6E200DDAF RL6E200EDAF RL6E244DDAF RL6E244EDAF RL6E281DDAF 

RL6E281EDAF RL4E027DDAF RL4E032DDAF RL4E038DDAF RL4E051DDAF RL4E064DDAF 

RL4E080DDAF RL4E094DDAF RL4E110DDAF RL4E125DDAF RL4E141DDAF RL4E155DDAF 

RL4E155EDAF RL4E195DDAF RL4E195EDAF RL4E230DDAF RL4E230EDAF 

RM6A182ADAF RM6A182DDAF RM6A182FDAF RM6A220ADAF RM6A220DDAF RM6A220FDAF 

RM6A276ADAF RM6A276DDAF RM6A276FDAF RM6A370ADAF RM6A370DDAF RM6A370FDAF 

RM6A442ADAF RM6A442DDAF RM6A442FDAF RM6A549ADAF RM6A549DDAF RM6A549FDAF 

RM6A658ADAF RM6A658DDAF RM6A658FDAF RM6E153DDAF RM6E153EDAF RM6E153FDAF 

RM6E153GDAF RM6E184DDAF RM6E184EDAF RM6E184FDAF RM6E184GDAF RM6E311DDAF 

RM6E311EDAF RM6E311FDAF RM6E311GDAF RM6E374DDAF RM6E374EDAF RM6E374FDAF 

RM6E374GDAF RM6E469EDAF RM6E469FDAF RM6E469GDAF RM6E564EDAF RM6E564FDAF 

RM6E564GDAF RM4E110DDAF RM4E110EDAF RM4E110FDAF RM4E110GDAF RM4E143DDAF 

RM4E143EDAF RM4E143FDAF RM4E143GDAF RM4E232DDAF RM4E232EDAF RM4E232FDAF 

RM4E232GDAF RM4E288DDAF RM4E288EDAF RM4E288FDAF RM4E288GDAF RM4E336EDAF 

RM4E336FDAF RM4E336GDAF RM4E419EDAF RM4E419FDAF RM4E419GDAF 

RV6A043ADAF RV6A043DDAF RV6A053ADAF RV6A053DDAF RV6A085ADAF RV6A085DDAF 

RV6A106ADAF RV6A106DDAF RV6A129ADAF RV6A129DDAF RV6A158ADAF RV6A158DDAF 

RV6A176ADAF RV6A176DDAF RV6A218ADAF RV6A218DDAF RV6A271ADAF RV6A271DDAF 

RV6E043DDAF RV6E053DDAF RV6E085DDAF RV6E106DDAF RV6E129DDAF RV6E158DDAF 

RV6E176DDAF RV6E218DDAF RV6E271DDAF 

ASLA25048ADAF ASLA25048DDAF ASLA25061ADAF ASLA25061DDAF ASLA35073ADAF ASLA35073DDAF 

ASLA45098ADAF ASLA45098DDAF ASLA55122ADAF ASLA55122DDAF ASLA65158ADAF ASLA65158DDAF 

ASLE25048DDAF ASLE25058DDAF ASLE35070DDAF ASLE45094DDAF ASLE55117DDAF ASLE65150DDAF 

RE6A041ADAF RE6A041DDAF RE6A070ADAF RE6A070DDAF RE6A084ADAF RE6A084DDAF 

RE6A104ADAF RE6A104DDAF RE6A128ADAF RE6A128DDAF RE6A141ADAF RE6A141DDAF 

RE6A169ADAF RE6A169DDAF RE6A204ADAF RE6A204DDAF RE6A258ADAF RE6A258DDAF 

RE6E037DDAF RE6E045DDAF RE6E075DDAF RE6E089DDAF RE6E108DDAF RE6E125DDAF 

RE6E137DDAF RE6E182DDAF RE6E221DDAF RE6E278DDAF RE4E037DDAF RE4E075DDAF 

RE4E107DDAF RE4E149DDAF RE4E186DDAF RE4E234DDAF 

RH6A031DDAF RH6A031FDAF RH6A043DDAF RH6A043FDAF RH6A052DDAF RH6A052FDAF 

RH6A063DDAF RH6A063FDAF RH6A087DDAF RH6A087FDAF RH6A105DDAF RH6A105FDAF 


jbell on DSKJLSW7X2PROD with NOTICES
Federal Register / Vol. 85, No. 247 / Wednesday, December 23, 2020 / Notices 83935 

RH6A132DDAF RH6A132FDAF RH6A156DDAF RH6A156FDAF RH6A175DDAF RH6A175FDAF 

RH6A209DDAF RH6A209FDAF RH6E033DDAF RH6E033EDAF RH6E033FDAF RH6E033GDAF 

RH6E044DDAF RH6E044EDAF RN6E044FDAF RH6E044GDAF RH6E053DDAF RH6E053EDAF 

RH6E053FDAF RH6E053GDAF RH6E066DDAF RH6E066EDAF RH6E066FDAF RH6E066GDAF 

RH6E089DDAF RH6E089EDAF RH6E089FDAF RH6E089GDAF RH6E109DDAF RH6E109EDAF 

RH6E109FDAF RH6E109GDAF RH6E134DDAF RH6E134EDAF RH6E134FDAF RH6E134GDAF 

RH6E163DDAF RH6E163EDAF RH6E163FDAF RH6E163GDAF RH6E199DDAF RH6E199EDAF 

RH6E199FDAF RH6E199GDAF RH4E035DDAF RH4E035EDAF RH4E035FDAF RH4E035GDAF 

RH4E044DDAF RH4E044EDAF RH4E044FDAF RH4E044GDAF RH4E071DDAF RH4E071EDAF 

RH4E071FDAF RH4E071GDAF RH4E087DDAF RH4E087EDAF RH4E087FDAF RH4E087GDAF 

RH4E107DDAF RH4E107EDAF RH4E107FDAF RH4E107GDAF RH4E131DDAF RH4E131EDAF 

RH4E131FDAF RH4E131GDAF RH4E167DDAF RH4E167EDAF RH4E167FDAF RH4E167GDAF 

Specific Requirement sought to be 

waived—Petitioning for a waiver and 

interim waiver to exempt CO2 Direct 

Expansion Unit Coolers in Medium and 

Low Temperature application from 

being tested to the current test 

procedure. The prescribed test 

procedure is not appropriate for these 

products for the reasons stated 

previously (liquid inlet saturation 

temperature and liquid inlet subcooling 

temperature test condition values are 

not appropriate for a transcritical CO2

booster system application). 

List of manufacturers of all other 

basic models marketing in the United 

States and known to the petitioner to 

incorporate similar design 

characteristics— 

Manufacturer: Heatcraft Refrigeration 

Products 

Manufacturer: Keeprite Refrigeration 

Manufacturer: Hussmann/Krack 

Refrigeration 

Proposed alternate test procedure: 

1. Utilize the test procedure as 

outlined in Appendix C to Subpart R of 

Part 431—Uniform Test Method for the 

Measurement of Net Capacity and 

AWEF of Walk-in Cooler and Walk-in 

Freezer Refrigeration Systems with the 

exception of modifying the test 

conditions in Table 15 and 16 for liquid 

inlet saturation temperature and liquid 

inlet subcooling temperature as noted 

below. In addition, per Appendix C to 

Subpart R of 431 use the calculations in 

AHRI 1250 section 7.9 to determine 

AWEF and net capacity for unit coolers 

matched to parallel rack systems. Use 

AHRI 1250 Table 17, EER for Remote 

Commercial Refrigerated Display 

Merchandisers and Storage Cabinets to 

determine the power consumption of 

the system. 

TABLE 15—REFRIGERATOR UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. 35 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

35 <50 25 38 5 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

TABLE 16—FREEZER UNIT COOLER

Test description 

Unit cooler 

air entering 

dry-bulb, °F 

Unit cooler 

air entering 

relative 

humidity, % 

Saturated 

suction 

temp, °F 

Liquid inlet 

saturation 

temp, °F 

Liquid inlet 

subcooling 

temp, °F 

Compressor 

capacity Test objective 

Off Cycle Fan Power .. ¥10 <50 .................... .................... .................... Compressor Off .. Measure fan input power during compressor 

off cycle. 

Refrigeration Capacity 

Suction A.

¥10 <50 ¥20 38 5 Compressor On .. Determine Net Refrigeration Capacity of Unit 

Cooler. 

Defrost ........................ ¥10 Various .................... .................... .................... Compressor Off .. Test according to Appendix C Section C11. 

Success of the application for Waiver 

and interim Waiver will: Ensure that 

manufacturers of CO2 Direct Expansion 

Unit Coolers in Medium and Low 

Temperature application can continue 

to participate in the market. 

What economic hardship and/or 

competitive disadvantage is likely to 

result absent a favorable determination 

on the Application for Waiver and 

Interim Waiver—Economic hardship 

will be loss of sales due to not meeting 

the DOE requirements set forth. 

Conclusion: 

Heat Transfer Products Group 

respectfully requests that DOE grant this 

petition for a Waiver and Interim 

Waiver from DOE’s current requirement 

to test CO2 direct expansion unit 

coolers. 

/s/ 

Michael Straub, 

Director, Engineering and Product 

Development. 

[FR Doc. 2020–26322 Filed 12–22–20; 8:45 am] 

BILLING CODE 6450–01–P 

DEPARTMENT OF ENERGY 

[FE Docket No. 12–101–LNG] 

Gulf LNG Liquefaction Company, LLC; 

Application to Amend Export Term 

Through December 31, 2050, for 

Existing Non-Free Trade Agreement 

Authorization 

AGENCY: Office of Fossil Energy, 

Department of Energy. 

ACTION: Notice of application. 

SUMMARY: The Office of Fossil Energy 

(FE) of the Department of Energy (DOE) 

gives notice (Notice) of receipt of an 

application (Application), filed on 


jbell on DSKJLSW7X2PROD with NOTICES