1 | Program Name or Ancillary Text eere.energy.gov The Parker Ranch installation in Hawaii BUILDING TECHNOLOGIES PROGRAM

Energy Conservation Program for Appliance Standards: Test Procedure NOPR Public Meeting for Refrigerators, Refrigerator - Freezers, and Freezers June 22, 2010 Department of Energy Energy Efficiency & Renewable Energy2 | Program Name or Ancillary Text eere.energy.gov

2 Building Technologies Program 

### • Present the Department’s proposed test procedures for refrigerators, refrigerator- freezers, and freezers

• Seek comment from participants on the proposed test procedures

• Discuss specific issues or questions related to the proposal

• Discuss the next steps for the rulemaking 

## Purpose of the Test Procedure NOPR Public Meeting Introduction3 | Program Name or Ancillary Text eere.energy.gov

3 Building Technologies Program 

## • NOPR issued by DOE on May 27, 2010 • NOPR Public Meeting today, June 22, 2010 • Comments on NOPR from interested parties

– Transcript records oral comments from today’s public meeting

– Written comments (comment period closes 75 days after publication in the Federal Register ) 

## • DOE reviews and considers all comments • Final Rule Publication

– Final Rule is expected to be issued by December 31, 2010 

## Steps in the Test Procedures Rulemaking Final Rule Introduction

NOPR4 | Program Name or Ancillary Text eere.energy.gov

4 Building Technologies Program A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements 

## Test Procedure Overview and Issues Introduction5 | Program Name or Ancillary Text eere.energy.gov

5 Building Technologies Program 

## • Workshop participants are invited to provide summary comments or statements

• Participants are also invited to raise their issues on the Test Procedure NOPR for discussion today 

## Comments and Issues from Participants Introduction6 | Program Name or Ancillary Text eere.energy.gov

6 Building Technologies Program Citation Date Description Test Procedure Final Rules 42 FR 46140 9/14/1977 Test procedure established. 47 FR 34517 8/10/1982 Revised Test Procedure based on AHAM - HRF 1 - 1979 54 FR 36238 8/31/1989 Variable Defrost Control, Dual System Defrost 68 FR 10957 3/7/2003 Long - time Defrost Test Procedure Modification Waivers Recently Granted 72 FR 20333 4/24/2007 Liebherr : Wine storage - freezer products 73 FR 10425 2/27/2008 GE: Variable Anti - Sweat 74 FR 20695 5/5/2009 Whirlpool: Variable Anti - Sweat 74 FR 66338 12/15/2009 Electrolux: Variable Anti - Sweat 

### Regulatory History: Refrigerator and Refrigerator- Freezer Test Procedure Introduction

Note: Additional waivers and interim waivers for variable anti - sweat control have been granted, extending the control to more products and at least two more manufacturers (Samsung and Haier ).7 | Program Name or Ancillary Text eere.energy.gov

7 Building Technologies Program Federal Register Reference Date Actions/Description Test Procedure Final Rules 42 FR 46140 9/14/1977 Test procedure established. 47 FR 34517 8/10/1982 Revised Test Procedure based on AHAM HRF - 1 - 1979 54 FR 36238 8/31/1989 Variable Defrost Control, Quick Freeze 

### Regulatory History: Freezer Test Procedure Introduction

Note: No petitions for waiver have been received since the 1989 final rule.8 | Program Name or Ancillary Text eere.energy.gov

8 Building Technologies Program 

### • Energy Independence and Security Act of 2007 (EISA 2007) Amendments to the Energy Policy and Conservation Act (42 U.S.C. 6291 et seq .)

– DOE must publish by December 31, 2010 either a determination indicating that new energy conservation standards are not needed, or an energy conservation standard final rule. 

### • Some of the proposed test procedure amendments will require modification of the energy conservation standards, since they affect measured energy consumption. 

## Regulatory History – Continued Introduction9 | Program Name or Ancillary Text eere.energy.gov

9 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements10 | Program Name or Ancillary Text eere.energy.gov

10 Building Technologies Program 

### • The proposed test procedure amendments cover refrigerators, refrigerator- freezers, and freezers. 10 CFR 430.2 provides the following definitions:

– “Refrigerator” means an electric refrigerator.

– “Refrigerator- freezer” means an electric refrigerator- freezer.

– “Electric refrigerator” means a cabinet designed for the refrigerated storage of food at temperatures above 32  ̊F and below 39  ̊F , configured for general refrigerated food storage, 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 and storage of food at temperatures below 8  ̊F . 

### Products Covered by the Test Procedure Changes Covered Products11 | Program Name or Ancillary Text eere.energy.gov

11 Building Technologies Program 

## • 10 CFR 430.2 provides the following definitions:

– “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 food at temperatures above 32  ̊F and with at least one of the compartments designed for the freezing and storage of food at temperatures below 8  ̊F which may be adjusted by the user to a temperature of 0  ̊F or below . The source of refrigeration requires single phase, alternating current electric energy input only.



### – “Freezer” means a cabinet designed as a unit for the freezing and storage of food at temperatures of 0  ̊F or below , and having a source of refrigeration requiring single phase, alternating current electric energy input only. Products Covered by the Test Procedure Changes, continued Covered Products12 | Program Name or Ancillary Text eere.energy.gov

12 Building Technologies Program Issue 1: Electric Refrigerator Definition **DOE requests comment on whether any clarifications are needed regarding the definition for electric refrigerators**  **. If so, please explain why and provide specific language that should DOE add.**  Covered Products 

### Request for Comment on the Definition of Electric Refrigerator13 | Program Name or Ancillary Text eere.energy.gov

13 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements14 | Program Name or Ancillary Text eere.energy.gov

14 Building Technologies Program 

### • DOE modified the definition of electric refrigerator to exclude wine storage products due to concerns about safe food storage temperatures. 66 FR 57845, November 19, 2001. • The temperature range for refrigerators was bounded at the high end at 39  ̊F in this definition change. • As suggested by stakeholders at the 12/10/09 Energy Conservation Standard Preliminary Analysis meeting, DOE may have authority to re - extend coverage to these products. • In this rulemaking, DOE proposes to modify its electric refrigerator-freezer definition to make it consistent with the refrigerator definition: “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 food at temperatures above 32  ̊F and below 39  ̊F and with at least one . . . .” Wine Storage - Freezer Products 

### DOE proposes to address wine storage and combination wine storage freezer products in a separate future rulemaking.15 | Program Name or Ancillary Text eere.energy.gov

15 Building Technologies Program 

## Request for Comment on Wine Storage - Freezer Products Issue 17: Combination Wine Storage - Freezer Products **DOE invites comment on its proposal to modify the definition of refrigerator**  **- freezer to exclude products which combine a freezer and**  **a wine storage compartment .**  Wine Storage - Freezer Products16 | Program Name or Ancillary Text eere.energy.gov

16 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements17 | Program Name or Ancillary Text eere.energy.gov

17 Building Technologies Program 

### • Two groups of proposed amendments, applicable for:

– Current energy conservation standards: amended versions of existing appendices A1 and B1

– Future (2014) energy conservation standards: new appendices A (for refrigerators and refrigerator- freezers) and B (for freezers) 

### • Proposed compliance date for both sets of test procedures: 30 days after publication of a TP final rule (expected by December 31, 2010). • New Appendices A and B would not be required for determining compliance with standards until the new standards compliance date in 2014. • Existing appendices A1 and B1 will be deleted from the CFR, after the new standards compliance date in 2014. Compliance Date for the Amended Test Procedures Compliance Date18 | Program Name or Ancillary Text eere.energy.gov

18 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements19 | Program Name or Ancillary Text eere.energy.gov

19 Building Technologies Program 

## Amendments Required for Testing Prior to New Energy Standard Compliance Date: 1. Procedures for Test Sample Preparation 2. Product Clearances to the Wall During Testing 3. Alternative Compartment Temperature Sensor Locations 4. Median Temperature Settings for Electronic Control Products 5. Test Procedures for Convertible Compartments and Special Compartments 6. Establishing a Temperature -Averaging Procedure for Auxiliary Compartments 7. Modified Definition for Anti - Sweat Heater 8. Testing with the Anti - Sweat Heater Switch Turned Off 9. Incorporation of Test Procedures for Products with Variable Anti - Sweat Heating Control Waivers 10. Modification of Long -Time and Variable Defrost Test Method to Capture Precooling Energy 11. Establishing Test Procedures for Multiple Defrost Cycle Types 12. Elimination of Part 3 of the Variable Defrost Test 13. Corrections and Other Test Procedure Language Changes 14. Including in Certification Reports Basic Information Clarifying Energy Measurements20 | Program Name or Ancillary Text eere.energy.gov

20 Building Technologies Program 

### Guidance for product setup to ensure that the test is based on representative average use Test Sample Preparation

 Future technology or product design features may make aspects of the proposed test procedures unclear or obsolete.  DOE proposes adding language to provide guidance to manufacturers regarding the intent of the test procedures.



## • Requirement that test samples be set up consistent with the instructions shipped with the cabinet, except as clearly indicated in the test procedure (i.e. ambient temperature conditions). 

## • Explanation that the intent of the test procedure is to represent energy use in “normal” conditions that might not themselves be specified for the test.  Requirement for petition for waiver if set up consistent with normal use is not possible or if application of the requirements to a particular new product are not clear.21 | Program Name or Ancillary Text eere.energy.gov

21 Building Technologies Program Proposed Modified Language (430.23, (a) and (b)): Test Procedure Intent Test Sample Preparation

 Language similar to AHAM HRF - 1 -2008 section 1, with the following differences



###  Use of concepts expressed in EPCA, for example “representative average consumer use”  Explicit acknowledgement that test conditions may not themselves be representative of average consumer use.  General description of controls or features that would provide non - representative measurements rather than specific examples -- to broaden the coverage.  Explicit requirement for petition for waiver in case measurements are non - representative22 | Program Name or Ancillary Text eere.energy.gov

22 Building Technologies Program Proposed Modified Language (Appendices A1, B1, A, B): Product Set Up Test Sample Preparation
2.6 The cabinet and its refrigerating mechanism shall be assembled and set up in accordance with the printed consumer instructions supplied with the cabinet. Set - up of the refrigerator or refrigerator- freezer shall not deviate from these instructions, unless explicitly required or allowed by this test procedure. Specific required or allowed deviations from such set - up include the following: (a) Connection of water lines and installation of water filters are not required; (b) Clearance requirements from surfaces of the product shall be as described in section 2.8 below; (c) The electric power supply shall be as described in HRF - 1 - 2008 (incorporated by reference; see § 430.3), section 5.5.1; (d) Temperature control settings for testing shall be as described in section 3 below. Settings for convertible compartments and other temperature controllable or special compartments shall be as described in section 2.7 below; and (e) The product does not need to be anchored or otherwise secured to prevent tipping during energy testing. For cases in which set - up is not clearly defined by this test procedure, manufacturers must submit a petition for a waiver (see section 7).23 | Program Name or Ancillary Text eere.energy.gov

23 Building Technologies Program 

### Request for Comment on Test Sample Preparation and Test Procedure Waivers Issue 4: Test Sample Preparation **DOE invites comments on the proposed clarifications of test procedures for preparing test samples. DOE has proposed allowed**  **and required deviations from set -**  **up according to installation instructions and invites comments on whether additional such**  **deviations should be incorporated into the test procedure.** Test Sample Preparation

Issue 5: Test Procedure Waivers **DOE seeks comment on the proposed language requiring petition for waivers to address products equipped with controls or other features**  **that modify the operation of energy using components during the energy test. DOE seeks comment on whether more specific**  **definitions could**  **or should be provided to define either the product characteristics that would make the test procedure unsuitable for use**  **or to define representative average use.**24 | Program Name or Ancillary Text eere.energy.gov

24 Building Technologies Program  AHAM HRF - 1 - 1979 section 7.4.2 requires that clearance from the rear wall of a product under test be

 “ . . . in accordance with the manufacturer’s instructions or as determined by mechanical stops on the back of the cabinet.” 

###  Recent versions of AHAM HRF - 1 all specify that the clearance be 

###  “ . . . the minimum distance in accordance with the manufacturer's instructions or as determined by mechanical stops on the back of the cabinet.”  DOE proposes to adopt a modification of the updated requirement which provides further clarification of:  Flatness and orientation of wall facing rear of unit.  Leveling of product and orientation with respect to the rear wall.  Minimum size of a simulated rear wall, and a requirement that it be solid. Product Clearances to Walls 

### DOE proposes to update the requirement for clearance from the rear of the product.25 | Program Name or Ancillary Text eere.energy.gov

25 Building Technologies Program 

## Request for Comment on Product Clearances to Walls Issue 16: Wall Clearance **DOE invites comment on the proposed procedures regarding clearance between the rear of a tested cabinet and the test chamber**  **or simulated wall . If the proposal requires modification, what**  **changes are needed and why?** Product Clearances to Walls26 | Program Name or Ancillary Text eere.energy.gov

26 Building Technologies Program 

### • Standard Temperature sensor locations are illustrated in AHAM HRF - 1.

• AHAM HRF - 1 1979 Figures 7 - 1 and 7 - 2 • AHAM HRF - 1 2008 Figures 5 - 1 and 5 - 2 

### • Current reporting requirements for alternative locations in Appendix A1, section 5.1:

• If the interior arrangements of the cabinet do not conform with those shown in Figures 7.1 and 7.2 of HRF – 1 – 1979, measurements shall be taken at selected locations chosen to represent approximately the entire refrigerated compartment. The locations selected shall be a matter of record. 

### • DOE proposes the following changes and clarifications: • Clarification of “shall be a matter of record”. • Require manufacturers to petition for waiver in case of significant deviations from standard sensor placements. • Specification that deviations greater than 2 inches are considered significant. Alternative Temperature Sensor Locations 

### DOE proposes to clarify the requirement for reporting of alternative temperature sensor locations.27 | Program Name or Ancillary Text eere.energy.gov

27 Building Technologies Program 

### Request for Comment on Alternative Temperature Sensor Locations Issue 6: Temperature Sensor Locations **DOE seeks comment regarding frequency of testing using temperature sensor locations not specifically shown in Figures 7.1** 

**and 7.2 of HRF -**  **1 -**  **1979. DOE also seeks comment on whether the proposed exception to proposed requirements for waivers**  **associated with non -** **standard sensor location arrangements are reasonable for limiting the frequency of such waivers.**  Alternative Temperature Sensor Locations28 | Program Name or Ancillary Text eere.energy.gov

28 Building Technologies Program 

### • Would primarily apply to Appendix A1 section 3.2.1 for selection of thermostat settings. The current language: 

## “ A first test shall be performed with all compartment temperature controls set at their median position midway between their warmest and coldest settings. Knob detents shall be mechanically defeated if necessary to attain a median setting. A second test shall be performed with all controls set at either their warmest or their coldest setting (not electrically or mechanically bypassed), whichever is appropriate, to attempt to achieve compartment temperatures measured during the two tests which bound (i.e., one is above and one is below) the standardized temperature for the type of product being tested. . . .” 

### • Key issue: Approach for defeat of controls to achieve median settings is generally not possible with electronic control products. Test Control Settings 

### DOE proposes modifications to update procedures for temperature settings for electronic - control products.29 | Program Name or Ancillary Text eere.energy.gov

29 Building Technologies Program 

### • Electronic controls often do not allow setting temperature exactly at the median position. Example:

– Fresh Food compartment, settings every  ̊F from 33 to 46.

– Median is 39.5  ̊F, not possible with the control system. 

### • Proposed resolution:

– Use nearest setting to the average of the highest and lowest that can be selected.

– If two selectable settings are the same difference from this average, use the warmer setting. Test Control Settings 

### Achieving Median Temperature Settings.30 | Program Name or Ancillary Text eere.energy.gov

30 Building Technologies Program 

### Request for Comment on Test Control Settings Issue A1: Median Setting for Electronic Control Products **DOE requests comment on the proposed language for addressing the potential inability of some electronic control products to be set in the**  **median position and requests details regarding alternatives if the**  **proposed language is not appropriate.** Test Control Settings31 | Program Name or Ancillary Text eere.energy.gov

31 Building Technologies Program 

### Differing treatment of convertible and non - convertible special compartments. Convertible and Special - Purpose Compartments

• AHAM HRF - 1 has conflicting requirements for convertible and non convertible compartments. From HRF - 1 -2008, section 5.5.2:



## • g) Compartments which are convertible (e.g. from refrigerator to freezer) are operated in the highest energy usage position. 

## • h) Other temperature controllable compartments (such as crispers convertible to meat keepers) shall be considered special compartments and shall be tested with controls set to provide the coldest temperature.
• DOE proposes adding specific language to both Appendices A1 and A requiring use of the highest - energy position. 

## • Reinforcement of requirement for convertible compartments. 

## • Achieve consistency of treatment for convertible and non - convertible compartments.32 | Program Name or Ancillary Text eere.energy.gov

32 Building Technologies Program 

## Request for Comment on Convertible and Special Compartments Issue 7: Convertible Temperature and Special Compartments

**DOE invites comment on the proposed clarifications of test procedures for treatment of convertible**  **- temperature**  **compartments and**  **the proposed amendments to the test procedures for special compartments. DOE also requests comment on whether a size limit** 

**should be established for classification of a special compartment, and what a reasonable size limit might be.**  Convertible and Special - Purpose Compartments33 | Program Name or Ancillary Text eere.energy.gov

33 Building Technologies Program 

### • Refrigerator -freezer definition allows for “ . . . two **or more** compartments . . .”

• But . . . .the test procedure energy use calculation (10 CFR 430 subpart B appendix A1 section 6.2.2.2) references TR and TF as if there is only one of each type of compartment. • AHAM HRF - 1 provides requirements for convertible and special compartments — DOE proposes adjustment of these requirements as just described. • Questions, issues:

– Differing compartment configurations: totally separate compartments, sub - compartments, convertible compartments.

– Incorporating a compartment’s temperature into the overall compartment temperature vs. the highest energy use setting?

– How to incorporate a compartment’s temperature into the overall compartment temperature calculation? Inadequacy of the two - compartment temperature setting approach Auxiliary Compartments34 | Program Name or Ancillary Text eere.energy.gov

34 Building Technologies Program 

### • Add definition for “separate auxiliary compartments” to clarify what type of compartments are addressed by these test procedure modifications:

– Freezer or fresh food compartments in addition to the “first” freezer or fresh food compartment.

– Separate door to the outside. 

### • Temperature sensor placement as indicated, for example, in AHAM HRF - 1 - 1979, Figures 7.1 and 7.2 

### • In case of separate temperature settings, use of same median, warm, and cold settings as specified for temperature settings of all other compartments. • Volume -weighted temperature averaging of all applicable compartments to determine freezer or fresh food temperature for comparison with standardized temperatures. DOE proposes the following test procedure modifications. Auxiliary Compartments35 | Program Name or Ancillary Text eere.energy.gov

35 Building Technologies Program 

### Request for Comment on Auxiliary Compartments Issue 8: Auxiliary Compartments **DOE invites comment on the proposed approach to modification of the test procedures to address auxiliary compartments with external**  **doors.** Auxiliary Compartments36 | Program Name or Ancillary Text eere.energy.gov

36 Building Technologies Program 

### • Current definition (Appendix A1, section 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 cabinet under conditions of high ambient humidity. • Some newer products use anti -sweat heaters to control sweating inside the product.

– Fresh food walls near ducts serving the ice compartment in French Door refrigerator- freezers with TTD ice service. 

### • Proposed definition (Appendices A1, B1, A, B): “Anti - sweat heater” means a device incorporated into the design of a refrigerator or refrigerator-freezer to prevent the accumulation of moisture on the exterior or interior surfaces of the cabinet. DOE proposes to expand the anti - sweat heater definition to include heaters controlling interior sweating. Anti - Sweat Heater Definition37 | Program Name or Ancillary Text eere.energy.gov

37 Building Technologies Program 

### Request for Comment on Anti - Sweat Heater Definition Issue 9: Anti - Sweat Heater Definition **DOE invites comment on the proposal to allow the anti -** **sweat heater definition to include condensation of moisture on all rather than just**  **exterior cabinet surfaces. DOE also seeks comment regarding whether additional clarity beyond the proposed amendments is**  **required and, if so, what specific clarification would be needed.** Anti - Sweat Heater Definition38 | Program Name or Ancillary Text eere.energy.gov

38 Building Technologies Program 

### • In 10 CFR 430 section 23(a), sections (2) and (5) are in conflict regarding the anti - sweat heater switch. • Section (2), annual operating cost for refrigerators and refrigerator- freezers with an anti - sweat heater switch, allows averaging of energy use for the standard cycle and a cycle with the switch in its position just before the unit is shipped. • The standard cycle is a cycle “in which the anti - sweat heater control, when provided, is set in the highest energy consuming position.” (Appendix A1, section 1.7) • Section (5), annual energy use, is based on energy use for the standard cycle only. • The same conflict is present in section 23(b) for freezers. Testing with the Anti - Sweat Heater Switch Turned Off Anti - Sweat Heater Switch39 | Program Name or Ancillary Text eere.energy.gov

39 Building Technologies Program 

## • The determination of annual energy use for refrigerators, refrigerator- freezers, and freezers was added to the test procedures on February 7, 1989 (54 FR 6062). • That notice did not discuss the different approach for the calculation of energy use as opposed to operating cost. • Most manufacturers use averaging of tests with the switch on and off for both energy use and operating cost. DOE proposes to change the language to call for averaging of tests for both energy use and operating cost. Anti - Sweat Heater Switch40 | Program Name or Ancillary Text eere.energy.gov

40 Building Technologies Program 

### • French Door products often require electric anti - sweat heating (ASH). • Electronic control systems can automatically control heaters based on sensor input so they are used only as needed to avoid sweating. • The General Electric Company initially petitioned for a waiver to measure energy use of a variable ASH system.

– Waiver granted February 27, 2008. 73 FR 10425

– ASH energy use contribution is calculated, added to energy measured in regular test with the ASH turned off.

– Manufacturer specification of watts vs. relative humidity curve.

– Averaging of ASH energy is based on a national average frequency distribution of indoor relative humidity developed from weather data.

– System factor of 1.3 for thermal load contribution and control power.

– Annual average duty cycle ≤5% (depends on watts vs. RH curve). 

### • DOE has granted similar waivers and interim waivers to Whirlpool, Electrolux, Samsung, and Haier. DOE has granted test procedure waivers for variable anti - sweat heating. Variable Anti - Sweat Heating41 | Program Name or Ancillary Text eere.energy.gov

41 Building Technologies Program 

### • Measurement of the control system’s ability to reduce anti - sweat heater wattage in lower humidity conditions. • Energy use contribution of ASH in moist conditions is added to the energy measured in a regular test in dry conditions in which the ASH would not operate. • Testing in a 72  ̊F ambient on a limited number of humidity conditions to prevent excessive test burden: 95%, 65%, and 35%.

• Develop curve for ASH energy use adder vs. RH based on ASH energy use adder at 95% and 65% RH. • Test approach assumes that ASH wattage varies linearly with ambient dew point. • Weighting of energy use at each humidity condition using the weighting factors of the GE waiver. 

### • No system adjustment needed, since this is already captured by the measurement. DOE proposes an approach that is more amenable to independent verification of performance. Variable Anti - Sweat Heating42 | Program Name or Ancillary Text eere.energy.gov

42 Building Technologies Program 

### • Standard ambient and interior temperatures and typical thermal resistances. • Solving for wattage that keeps surface temperature a fixed difference above dew point gives a linear wattage/dew point relationship. 

### DOE analysis supports a linear control assumption Variable Anti - Sweat Heating

Thermal Resistance 2 Thermal Resistance 1 ASH Heat Input Increasing Thermal Resistance 243 | Program Name or Ancillary Text eere.energy.gov

43 Building Technologies Program 

### • Ambient conditions. • 72 +/- 1  ̊F; 95% +/- 2% RH • 72 +/- 1  ̊F; 65% +/- 2% RH • 72 +/- 1  ̊F; 25% +/- 10% RH (wide range since control will turn the ASH off) 

### • Compartment temperatures. • 5  ̊F freezer, 38 +/- 2  ̊F fresh food (same as current variable defrost Part 3 test, with expected change to 0  ̊F / 39  ̊F in appendix A) 

### • Test period the same as for a test with a unit having no automatic defrost (Appendix A1, section 4.1.1) • Calculation of the energy use adder for RH other than 65% and 95% is based on interpolation based on dew points:

• DE RH = DE 65 + (DE 95 – DE 65 ) × (DP RH – DP 65 )/(DP 95 – DP 65 ), where DE represents the energy use adders, DP the dew points, and RH, 65, and 95 the relative humidities. 

### • Eliminate anti - sweat heater switch allowance if using the variable anti - sweat heating procedure. 

## Proposed Test Details. Variable Anti - Sweat Heating44 | Program Name or Ancillary Text eere.energy.gov

44 Building Technologies Program 

### • Use 90  ̊F ambient?

– Not representative of anti - sweat operating conditions. 

### • No test?

– Little or no opportunity for independent verification of performance. 

### • Relax requirement for chamber humidity control in the test?

– Impossible to verify that control responds to ambient humidity, the key control parameter for variable anti - sweat heating. 

### • Allow results for one product to be used in energy calculations for certification testing of product with the “same” VASH system?

– DOE will consider this approach. 

### DOE Considered Variations on this approach to mitigate test burden. Variable Anti - Sweat Heating45 | Program Name or Ancillary Text eere.energy.gov

45 Building Technologies Program 

### Request for Comment on Variable Anti - Sweat Heating Issue 11: Test for Energy Use Contribution of Variable Anti - Sweat Heater Control **(a) DOE invites comment on the proposal to incorporate into the test procedures a determination of the energy use associated with**  **variable anti -** **sweat heater controls involving test measurements. (b) DOE also invites comment on whether the variable anti**  **- sweat**  **heater test procedure should also be incorporated into Appendices B and B1 for freezers.**  **(c) Finally, DOE invites comment on the suggested approach for reduction of test burden associated with the proposed test; DOE**  **requests information and data providing justification for adopting this approach**  **. DOE further requests comments providing recommendations for alternative approaches for reduction of test**  **burden and data supporting such alternative approaches.** Variable Anti - Sweat Heating46 | Program Name or Ancillary Text eere.energy.gov

46 Building Technologies Program 

### • Precooling reduces freezer temperature prior to a defrost. • The defrost part of the long time defrost test starts (1) when the last compressor cycle ends OR (2) when the defrost heater is energized. 

## Modifying the Procedure to Capture Precooling Energy Long Time Defrost Test Method47 | Program Name or Ancillary Text eere.energy.gov

47 Building Technologies Program Long Time Defrost Test Method



### • Added pre - cooling energy use is not measured by the procedure • Pre - cooling represents about 2% of total energy for this example.48 | Program Name or Ancillary Text eere.energy.gov

48 Building Technologies Program 

### • Shift the start of the defrost part of the test to the last compressor “off” at the end of a period of steady - state cycling operation before initiation of defrost. • Modification would apply to existing Appendices A1 and B1 and to new Appendices A and B, DOE proposes to modify the test procedure to include all energy use associated with defrost Long Time Defrost Test Method49 | Program Name or Ancillary Text eere.energy.gov

49 Building Technologies ProgramREGULARCOMPRESSORCYCLEPRECOOL CYCLEDEFROST HEATERREGULARCOMPRESSORCYCLE

T2 4 HOURS MAXIMUM START ENDENERGY Long Time Defrost Test Method 

## Diagram of Proposed Revision to Test Cycle50 | Program Name or Ancillary Text eere.energy.gov

50 Building Technologies Program 

### • Change in measured energy use?

– Not for most refrigerator- freezer products!

– Intent has always been for measurement of all energy associated with defrost (consider the normal automatic defrost test procedure, Appendix A1, section 4.1.2).

– DOE concludes that adjustment of the energy conservation standard is not necessary. 

### • Suitability for a variable -speed compressor system that doesn’t cycle off?

– Start at a time when the compartment temperatures are within their ranges measured during steady state operation.

– Or within 0.5  ̊F of the average compartment temperatures measured during steady state operation if the temperature ranges are 1  ̊F or less. 

### • Other defrost energy issues:

– Multiple evaporator defrosts? Next NOPR section.

– Partial Recovery?

– Proper selection of start/stop times?

– Validity of 50% run assumption? 

## Issues Long Time Defrost Test Method51 | Program Name or Ancillary Text eere.energy.gov

51 Building Technologies Program 

## Illustration of Multiple evaporator defrosts, partial recovery. Long Time Defrost Test Method

FF Evaporator Defrost Partial Recovery52 | Program Name or Ancillary Text eere.energy.gov

52 Building Technologies Program 

## • Partial Recovery hides about 0.5% of the energy for the previous example. • Possible test procedure modifications to capture all of the energy use:

– Extend defrost part of test to the third compressor “on” after defrost.

– Provide a temperature recovery specification.

– Include temperature averaging for the defrost period. Long Time Defrost Test Method 

### Partial recovery53 | Program Name or Ancillary Text eere.energy.gov

53 Building Technologies Program Long Time Defrost Test Method
 FF evaporator defrost contribution for the previous example: 

## • Negative ( - 18 watt - hours per defrost) using the current procedure. 

## • +26 watt - hours per defrost when test period ends at **end** of 2 nd compressor cycle after defrost. 

## • Actual defrost heat input is 26 watt - hours (110 watts for 14 minutes)  The total energy use measurement would be ~3% higher if defrost part of test ends at the end of second compressor cycle after defrost.  This energy use is closer to the result obtained when using the conventional auto - defrost approach of measuring from an event during one defrost cycle to the same event in the next defrost cycle. 

### Start/end times for defrost part of test

Full - cycle measurement 1.86 kWh/day Two - part measurement: Current Method 1.78 kWh/day End at 2 nd compressor cycle OFF 1.83 kWh/day End at 3 rd compressor cycle ON 1.79 kWh/day End at 3 rd compressor cycle OFF 1.83 kWh/day54 | Program Name or Ancillary Text eere.energy.gov

54 Building Technologies Program Long Time Defrost Test Method

 The defrost energy is weighted in test procedure assuming 50% run: 

## • ET = (1440 × EP1/T1) + (EP2 - (EP1 × T2/T1)) × (12/CT) 12 represents 24 hours times 50% compressor run CT is equal to the  ̋ average  ̋ compressor run between defrosts  For variable -speed compressor systems, the required number of compressor operating hours between defrosts should be longer, thus the control algorithm’s CT value will be higher.  Hence, the 12/CT weighting factor for defrost energy will under represent defrost energy use for products with variable speed compressors. 

### Validity of 50% compressor run assumption55 | Program Name or Ancillary Text eere.energy.gov

55 Building Technologies Program 

## Request for Comment on Long Time Defrost Test Method Issue 14: Precooling and Other Issues Associated with the Long Time Defrost Test Method **DOE invites comment on the proposal to include precooling energy in the procedures for testing products with long**  **- time or variable**  **defrost controls. DOE also invites comment regarding whether additional test**  **procedure amendments are appropriate in order to address possible use of partial recovery to reduce energy use of this part of the test, or**  **on any of the other issues raised.** Long Time Defrost Test Method56 | Program Name or Ancillary Text eere.energy.gov

56 Building Technologies Program 

### • Current test procedure is written as if all defrost cycles are the same. • Where this is not the case, the proposed test procedure language will require proper accounting for the energy use of all defrost cycle types. • Proposed definition of “defrost cycle type”: “. . . a distinct sequence of control whose function is to remove frost and/or ice from a refrigerated surface. There may be variations in the sequence of control for defrost such as the number of defrost heaters energized. Each such variation establishes a separate distinct defrost cycle type.” • Summation of defrost contribution of all defrost cycle types: Multiple Defrost Cycle Types 

### DOE proposes language to incorporate measurement of more than one type of defrost cycle57 | Program Name or Ancillary Text eere.energy.gov

57 Building Technologies Program 

## Request for Comment on Multiple Defrost Cycle Types Issue 15: Multiple Defrost Cycle Types **DOE requests comments on the proposed amendments addressing test procedures for products with long**  **- time or variable defrost that**  **incorporate multiple types of defrost cycles.** Multiple Defrost cycle Types58 | Program Name or Ancillary Text eere.energy.gov

58 Building Technologies Program 

## • DOE is not aware that any manufacturers use this part of the test to certify products. • DOE testing of a single product shows that the test makes a small difference in measured energy use.

– CT based on Part 3 test: 21 hours.

– CT based on CT L 

### and CT M 

### : 24 hours.

– Difference in total energy use: less than 0.4% 

## • Significant test burden: Test duration of 1 to 2 weeks. Variable Defrost Optional Test Part 3 

### DOE proposes to eliminate the optional third part of the test for variable defrost products59 | Program Name or Ancillary Text eere.energy.gov

59 Building Technologies Program 

## Request for Comment on Elimination of Part 3 of the Variable Defrost Test Issue 10: Elimination of the Optional Third Part of the Test for Refrigerator - Freezers with Variable Defrost **DOE invites comment on the proposed elimination of the optional**

**third part of the test for testing refrigerator -**  **freezers with variable defrost. In particular, DOE requests information indicating**  **if the third**  **part of the procedure has been used in recent years for rating a product, and whether it provides a more accurate indication of the**  **frequency of defrosts for such products than the default equation for this parameter.**  Variable Defrost Optional Test Part 360 | Program Name or Ancillary Text eere.energy.gov

60 Building Technologies Program 

## • Simplification of the Energy Use Equation for Products with Variable Defrost Control. • Energy Testing and Energy Use Equation for Products with Dual Automatic Defrost. Corrections and Other Test Procedure Language Changes This NOPR section addresses two items: Corrections and Improvements61 | Program Name or Ancillary Text eere.energy.gov

61 Building Technologies Program 

### • The equation for CT is missing a parenthesis. CT= ( CT L 

### × CT M 

### )/(F × (CT M 

### −CT L 

### )+CT L 

### )

• Units of CT L 

### , and CT M 

### are specified incorrectly as “in tenths of an hour”. DOE proposes “in hours rounded to the nearest tenth of an hour” • The section currently provides equations for F, ET L, 

### and ET M 

### that are unnecessary and confusing. • Next slide explains proposed change 

## Proposed modifications to variable defrost control energy consumption equation in appendix A1 section 5.2.1.3 Corrections and Improvements62 | Program Name or Ancillary Text eere.energy.gov

62 Building Technologies Program 

### • DOE proposes to remove the text highlighted in red. • F=ratio of per day energy consumption in excess of the least energy and the maximum difference in per day energy consumption and is equal to F = (1/CT − 1/CT M 

### )/(1/CT L 

### − 1/CT M 

### )= (ET − ET L 

### )/ET M 

### − ET L 

### ) or 0.20 in lieu of testing to find CT. ET L 

### = least electrical energy used (kilowatt hours) ET M 

### =maximum electrical energy used (kilowatt hours).

• These changes , and the change to the CT equation, would be for Appendices A1 and A, and for Appendices B1 and B. Corrections and Improvements 

## Proposed change to equations for F, ET L 

## , and ET M63 | Program Name or Ancillary Text eere.energy.gov

63 Building Technologies Program 

### • The definitions of EP F 

### , EP2 F 

### , EP R 

### , and EP2 R 

### are incorrect. • ET=(1440 × EP1/T1) + (EP2 F 

### − (EP F 

### × T2/T1)) × 12/CT F 

### + (EP2 R 

### − (EP R 

### × T3/T1)) × 12/CT R

• EP F = energy expended in kilowatt - hours during the second part of the test for the freezer system by the freezer system. (should be first part) • EP2 F = total energy expended during the second part of the test for the freezer system. (should be the energy just of the freezer system) • EP R = energy expended in kilowatt - hours during the second part of the test for the refrigerator system by the refrigerator system. (should be first part) • EP2 R = total energy expended during the second part of the test for the refrigerator system. (should be the energy just of the refrigerator system)



### • DOE proposes to correct these parameter definitions (Appendices A1 and A). 

## Proposed modifications to dual defrost control energy consumption, Ap pendix A1 section 5.2.1.5. Corrections and Improvements64 | Program Name or Ancillary Text eere.energy.gov

64 Building Technologies Program 

### • Provision of basic test information to allow accurate third party testing. • Variable Defrost: Indication of whether the product has this control feature, and the values of CT L 

### and CT M 

### used to calculate energy use. • Variable Anti - Sweat Heater Control: Indication of whether the product has this control feature. • Testing with Non - standard temperature sensor locations: Indication that non - standard temperature sensor locations have been used.

– Test reports filed by the manufacturer and available for review will provide details regarding adjustments of sensor locations. 

### • Proposed changes to be implemented in 10 CFR 430.62(a)(4)(xii). 

## DOE proposes requiring inclusion of basic energy test information in certification report information Certification Report Information65 | Program Name or Ancillary Text eere.energy.gov

65 Building Technologies Program 

## Request for Comment on Proposed Requirement for Information Included in Certification Report Issue 23: Certification Report Amendments **DOE requests comments on the proposed additions to certification reports that will clarify the approach used to test the product.**  **Would this proposal be sufficient to enable accurate testing to be**  **performed, and, if this information is not sufficient, what additional or**  **alternative information should be provided?** Certification Report Information66 | Program Name or Ancillary Text eere.energy.gov

66 Building Technologies Program 

## Request for Comment on Measured Energy Impacts for Proposed Test Procedure Amendments Issue 2: Measured Energy Impacts of Amendments Proposed to be required for testing prior to the Compliance Date of the New Energy Conservation Standards DOE invites comment on whether any of the amendments proposed to be required for testing prior to the compliance date of the new energy conservations standards (scheduled per EPCA to be January 1, 2014), would be likely to alter measured energy use, and if so, how. DOE requests information quantifying these impacts, if any. Measured Energy Impacts67 | Program Name or Ancillary Text eere.energy.gov

67 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements68 | Program Name or Ancillary Text eere.energy.gov

68 Building Technologies Program 

## Amendments Required for Testing on/after New Energy Standard Compliance Date:
1. Incorporating by Reference AHAM Standard HRF - 1 -2008 for Measuring Energy and Internal Volume of Refrigerating Appliances 2. Establishing New Compartment Temperatures 3. Establishing New Volume Calculation Method 4. Control Settings for Refrigerators and Refrigerator - Freezers During Testing 5. Icemakers and Icemaking69 | Program Name or Ancillary Text eere.energy.gov

69 Building Technologies Program 

### • DOE proposes adoption of some provisions of AHAM HRF - 1 - 2008 for products tested for compliance with the future energy conservation standards.

– New compartment temperatures

– New volume adjustment factors

– New volume calculation methods 

### • Modified Appendices A1 and B1 would continue to refer to AHAM HRF - 1 - 1979.
• New Appendices A and B would refer to AHAM HRF - 1 - 2008 

## Incorporating by Reference AHAM Standard HRF - 1 2008 Incorporating AHAM Standard HRF - 1 -200870 | Program Name or Ancillary Text eere.energy.gov

70 Building Technologies Program 

## Request for Comment on Incorporating AHAM Standard HRF - 1 - 2008 Issue 3: Incorporating by Reference AHAM Standard HRF - 1 -2008 **DOE invites comment on the approach proposed for incorporating provisions of AHAM Standard HRF**  **- 1**  **- 2008, including (a) maintaining**  **the reference to AHAM Standard HRF -**  **1 -**  **1979 in Appendices A1 and B1, which will continue to be in effect until the new energy**  **conservation standards become mandatory; (b) incorporating directly into Appendices A1 and B1 language from AHAM Standard**  **HRF -**  **1 -**  **2008 to clarify test procedures; and (c) changing all references to HRF**  **- 1**  **- 2008 for Appendices A and B, which will**  **become mandatory for verifying compliance with energy standards on and after the**  **compliance date for the new energy conservation**  **standards in 2014.** Incorporating AHAM Standard HRF - 1 -200871 | Program Name or Ancillary Text eere.energy.gov

71 Building Technologies Program 

### • IEC Technical Committee 59, Working Group 12 is developing IEC Standard 62552, with different compartment temperatures than currently used in the DOE test procedure. • AHAM HRF - 1 - 2008 has adopted the proposed IEC temperatures. 

## DOE proposes to adopt new compartment temperatures to enhance international harmonization. New Compartment Temperatures



## Compartment Product Current Proposed Freezer Refrigerator- Freezer 5  ̊F 0  ̊F Fresh Food 45  ̊F 39  ̊F Freezer Refrigerator 15  ̊F No change Fresh Food 45  ̊F 39  ̊F Fresh Food All - Refrigerator 38  ̊F 39  ̊F Freezer 0  ̊F No change Freezer72 | Program Name or Ancillary Text eere.energy.gov

72 Building Technologies Program 

### • International harmonization. • Better consistency with typical settings in the field. • Reduce the potential impact of circumvention associated with the Warm/Warm setting when testing refrigerator-freezers. 

## Benefits New Compartment Temperatures



### Issues

• Volume adjustment factor changes. 

# • Basic Refrigerators: 1.44 → 1.47 

# • Refrigerator- Freezers: 1.63 → 1.76 

# • Freezers: 1.73 → 1.76
• Measured energy will change, requiring adjustment of the energy conservation standard.
• Product classes that are a mix of all - refrigerators and other refrigerators or refrigerator-freezers need to be split.73 | Program Name or Ancillary Text eere.energy.gov

73 Building Technologies Program 

### • New Appendices A and B based on AHAM HRF - 1 - 2008 and the new compartment temperatures. • Freezers are affected by the change in volume adjustment factor! • Future energy conservation standards to be based on Appendices A and B (EISA- mandated compliance date for new products January 1, 2014) • Appendices A1 and B1, based on AHAM HRF - 1 - 1979, still applicable for measurement of energy use prior to the future energy conservation standards compliance date. 

## DOE proposes to adopt the new compartment temperatures in the new Appendices A and B. New Compartment Temperatures74 | Program Name or Ancillary Text eere.energy.gov

74 Building Technologies Program 

## Request for Comment on New Compartment Temperatures Issue 12: New Compartment Temperatures **DOE invites comment on the establishment of new compartment temperatures for testing of refrigerators and refrigerator**  **- freezers and**  **the new volume adjustment factors for testing of refrigeration products.**  New Compartment Temperatures75 | Program Name or Ancillary Text eere.energy.gov

75 Building Technologies Program 

### • Simplified method with less room for variation in interpretation. • Small overall volume impact. • Requires recasting of the energy conservation standard, which is expressed in terms of adjusted volume. • DOE proposes incorporating this change in Appendices A and B. • The existing volume calculation method will still apply to Appendices A1 and B1, applicable for products prior to the future energy conservation standards compliance date. 

## DOE also proposes adopting the new volume calculation method of AHAM HRF - 1 - 2008 New Volume Calculation Method76 | Program Name or Ancillary Text eere.energy.gov

76 Building Technologies Program 

## • AHAM HRF - 1 - 2008, section 4 does not specifically mention whether the ice maker or ice storage bin are to be considered part of the volume. • DOE proposes adding language to Appendix A, section 5 to ensure that these components are treated as not being in place for the volume calculation (consistent with AHAM HRF - 1 - 1979) Adjustments to the new volume calculation method language. New Volume Calculation Method77 | Program Name or Ancillary Text eere.energy.gov

77 Building Technologies Program 

## Request for Comment on New Volume Calculation Method Issue 13: New Volume Calculation Method **DOE invites comment on the establishment of a new volume calculation method. DOE also invites comment on the proposed**  **clarification of the HRF -**  **1 -**  **2008 volume calculation method addressing treatment of automatic icemakers and ice storage bins in** 

**the volume calculation method. Finally, DOE requests comment on whether this clarification should be applied also to freezers.**  New Volume Calculation Method78 | Program Name or Ancillary Text eere.energy.gov

78 Building Technologies Program 

### • Issues:

– Current test procedure specifies standardized temperature only for the freezer compartment of refrigerators and refrigeratorfreezers.

– Settings for second test based only on freezer compartment temperature during first test.

– The current procedure could permit energy use reporting and certification for products that fail to hold standardized temperatures.

– Test settings for the second test are not specified for some possible first - test outcomes. 

## DOE proposes to clarify the procedure for temperature control settings. Temperature Control Settings79 | Program Name or Ancillary Text eere.energy.gov

79 Building Technologies Program 

### • Proposals:

– Establish dual standardized temperatures for basic refrigerators and refrigerator- freezers (39  ̊F fresh food compartment temperature)

– Use of Warm/Warm in second test only if both compartments are cooler than the standardized temperatures in the first test.

– Clarify further testing and energy use calculation for situations not defined in current test procedure.

– Provide Tables in the test procedure to clarify the temperature setting procedures. 

## DOE proposes test procedure additions to clarify the procedure for temperature control settings. Temperature Control Settings80 | Program Name or Ancillary Text eere.energy.gov

80 Building Technologies Program Temperature Control Settings First Test Second Test Third Test Settings Energy Calculation Based on : Case Number Settings Results Settings Results Fzr Mid FF Mid Fzr Low FF Low Fzr Warm FF Warm Fzr Low FF Low None Second Test Only 1 Fzr Low FF High None P ropose use of First and Second Test 2 Fzr High FF Low None First and Second Test 3 Fzr High FF High None First and Second Test 4 Fzr Low FF High Fzr Cold FF Cold Fzr Low FF High None P ropose Third test (W /W), use of Second and Third Tests 5 Fzr Low FF Low None P ropose use of First and Second Test s 6 Fzr High FF Low Fzr Cold FF Cold Fzr High FF Low Fzr Warm FF Warm Second and Third Tests 7 Fzr Low FF Low None First and Second Tests 8 Fzr High FF High Fzr Cold FF Cold Fzr Low FF Low None First and Second Tests 9 Fzr Low FF High None First and Second Tests 10 Fzr High FF Low Fzr Warm FF Warm Second and Third Tests 11 Fzr High FF High Fzr Warm FF Warm Second and Third Tests 1281 | Program Name or Ancillary Text eere.energy.gov

81 Building Technologies Program 

## Request for Comment on Temperature Control Settings During Testing Issue 20: Temperature Settings **DOE requests comment on proposed modifications to the test**

**procedures to clarify requirements for temperature settings, including whether DOE’s understanding regarding the approach used**  **by manufacturers is correct, and comment on whether these requirements should be incorporated into Appendices A1 and B1 as**  **well as Appendices A and B. DOE also requests**  **comment on whether rating of products should be disallowed in case of tests in which**  **compartment temperatures are higher than their standardized temperatures with temperature controls in their coldest position, and**  **whether such an amendment should be introduced immediately in Appendices A1 and B1, or whether they should be considered only**  **for Appendices A and B.** Temperature Control Settings82 | Program Name or Ancillary Text eere.energy.gov

82 Building Technologies Program 

## • DOE has provided guidance regarding treatment of icemakers during energy testing with documents made public in January and December, 2009. • This section discusses incorporation of icemaking energy use into the energy use measurement. • DOE also raises the question whether a test procedure amendment is needed to address presence of ice in the ice bin during testing. Icemaking 

### Icemaker/ Icemaking Topics83 | Program Name or Ancillary Text eere.energy.gov

83 Building Technologies Program 

### DOE proposes an interim approach for incorporation of icemaking energy use in the test measurement Icemaking

• AHAM has been working on development of a test procedure for measurement of icemaking energy use.
• NIST has conducted testing to explore issues associated with measurement of icemaking energy.
• Available information shows that development of a robust procedure for measuring icemaking energy use is very challenging.
• DOE proposes to incorporate a placeholder icemaking energy use value into the energy use measurement for products with automatic icemakers.

• Fixed placeholder value of 0.23 kWh/day based on preliminary AHAM testing. • Insufficient information is available to determine dependence on key product characteristics (product class, efficiency level, etc.)84 | Program Name or Ancillary Text eere.energy.gov

84 Building Technologies Program 

### • Icemaking test procedure objectives:

– Applicability for all types of automatic ice makers.

– Test data is provided demonstrating viability of the procedure.

– The test procedure includes an ice production rate in pounds per day or per year supported by adequate data.

– Consensus among industry representatives that the test burden is not excessive.

– Accuracy and Repeatability. 

### • A Supplementary NOPR would be published to propose such a test procedure for consideration by stakeholders. Icemaking 

### DOE will consider adopting a more comprehensive icemaking test procedure.85 | Program Name or Ancillary Text eere.energy.gov

85 Building Technologies Program 

## Request for Comments on Icemaking Issue 18: Icemaking **DOE requests comments on the proposed approach for integrating icemaking energy use into the energy use metrics for refrigeration**  **products. DOE requests recommendations for development of a test method for determination of icemaking energy use, including data to**  **show the viability of recommended approaches. DOE requests comments on whether refrigerators with freezer compartments could**  **include icemakers. Finally, DOE requests any updated data supporting determination of a representative daily ice production**  **factor.** Icemaking

Issue 19: Presence of Ice in the Ice Bin During Testing **DOE seeks comment on whether a requirement should be adopted in the test procedure specifying whether ice may be in the ice bin**  **during energy testing.**86 | Program Name or Ancillary Text eere.energy.gov

86 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements87 | Program Name or Ancillary Text eere.energy.gov

87 Building Technologies Program 

### Review of Established or Proposed Requirements for Electric Heaters Electric Heaters

• This NOPR section introduces no new proposals for test procedure regulatory language.
• The requirements already established or proposed in other NOPR sections for electric heaters are highlighted in this section.

• Anti - sweat: Definition change for internal sweat, Correction of energy use calculation language, variable anti - sweat control.
• Defrost: Modification of long - time defrost procedure, test procedure language correction/improvement, multiple defrost cycles.
• Compartment temperature trimming: Addressed by requirements for compartment temperature setpoint adjustment.
• Related to icemakers: Mold (harvest), Fill - tube
• Heaters for external evaporation of liquid water (drain pan, dispenser recess): Addressed by requirements consistent with normal use.
• Others?88 | Program Name or Ancillary Text eere.energy.gov

88 Building Technologies Program 

## Request for Comment on Electric Heaters Issue 21: Electric Heaters **DOE requests comment regarding electric heaters: what types exist that are not discussed in the NOPR in section III.F.1, how do they**  **contribute to energy use in normal use and in the energy test, and is test**  **procedure modification recommended**  **to more accurately reflect their energy use impact?**  Electric Heaters89 | Program Name or Ancillary Text eere.energy.gov

89 Building Technologies Program 

### DOE raises the issue of rounding off of energy test results. Energy Use Round - Off

• The current test procedure does not specify how many significant digits after the decimal point are required for reporting of energy use.
• Better precision than reporting to the nearest kWh/year is probably not justified.

• Required energy measurement accuracy of +/ - 0.5% • At ~500 kWh/year, the required accuracy is no better than +/ - 2.5 kWh/year. 

## • The energy standard would require similar rounding for consistency.90 | Program Name or Ancillary Text eere.energy.gov

90 Building Technologies Program 

## Request for Comment on Energy Use Measurement Round - Off Issue 22: Energy Measurement Round - Off **DOE requests comment on the achievable accuracy in measurement of refrigeration product energy use and the guidance under**  **consideration to specify reporting of energy use to the nearest kilowatt**  **- hour and on the need to provide a similar rounding for**  **maximum allowable energy use under the energy conservation standard.**  Energy Use Round - Off91 | Program Name or Ancillary Text eere.energy.gov

91 Building Technologies Program 

## Test Procedure Overview A. Products Covered by the Test Procedure Changes B. Combination Wine Storage - Freezer Products C. Establishing New Appendices A and B, and Compliance Date for the Amended Test Procedure D. Amendments Required for Testing Prior to New Energy Standard Compliance Date E. Amendments Required for Testing on/after New Energy Standard Compliance Date F. Other Issues Under Consideration G. Compliance with Other EPCA Requirements92 | Program Name or Ancillary Text eere.energy.gov

92 Building Technologies Program 

## • Consideration of Test Burden • Standby and Off Mode Energy Use. Other EPCA Requirements 

### This section addresses two other EPCA requirements.93 | Program Name or Ancillary Text eere.energy.gov

93 Building Technologies Program 

### • “ . . . test procedures . . . shall not be unduly burdensome to conduct.” – 42 U.S.C. 6293(b)(3) • DOE considered the burden associated with these test procedure changes • Most of the changes do not significantly affect requirements for test facility equipment and instrumentation or test time. • Key changes that may significantly increase test burden:

– Variable anti - sweat heating test procedure.

– Icemaking test procedure. • DOE currently is proposing a simplified approach to incorporation of icemaking energy use that would not impose additional test burden. Other EPCA Requirements 

### Test Burden94 | Program Name or Ancillary Text eere.energy.gov

94 Building Technologies Program 

### • Manufacturers already have humidity - controlled chambers to verify humidity - affected performance of refrigerators and refrigerator- freezers. • The proposed test represents the minimum amount of testing that could be done to measure and verify variable anti - sweat heating control. • DOE is considering further test burden reduction by allowing the variable anti - sweat heating measurements for one product to be used for certification of products with the same variable anti - sweat heating system design. Other EPCA Requirements 

### DOE concludes that the variable anti - sweat heating test procedure is not unduly burdensome.95 | Program Name or Ancillary Text eere.energy.gov

95 Building Technologies Program 

### • The current test procedures involve long periods of time, including times when the refrigeration system cycles off. • Operation with the refrigerator shut down (i.e. not keeping the compartments refrigerated) are not applicable for refrigeration products. • Standby and off modes of auxiliary features are captured in the current test procedure, which calls for the “lowest energy use position” –AHAM HRF - 1 - 1979, section 7.4.2, AHAM HRF - 1 - 2008 , sections 5.5.2 (e) and (f). Other EPCA Requirements 

### The EPCA requirement to incorporate standby and off mode energy use are already satisfied by the current test procedure.96 | Program Name or Ancillary Text eere.energy.gov

96 Building Technologies Program 

#  Public Meeting – oral comments will be captured in the transcript and become part of the public record. 

#  Written comments – NOPR comment period open until 75 days after publication in the Federal Register Reference docket #: EERE - 2009 - BT- TP - 0003 and/or RIN #: 1904 -AB92

Email: Refrig - 2009 - TP - 0003@ee.doe.gov Mail: Mrs. Brenda Edwards U.S. Department of Energy Building Technologies Program 1000 Independence Avenue, SW, Mailstop EE - 2J Washington, DC 20585 - 0121 Courier: Mrs. Brenda Edwards U.S. Department of Energy Building Technologies Program 950 L'Enfant Plaza, Suite 600 Washington, DC 20024 Telephone: (202) 586 - 2945 

## How to Submit Comments... Closing