### 33631 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

[FR Doc. 2011–14282 Filed 6–8–11; 8:45 am]

**BILLING CODE 6450–01–P**

**DEPARTMENT OF ENERGY**

**10 CFR Part 431**
**[Docket No. EERE–2008–BT–TP–0014]**

**RIN 1904–AB85**
**Energy Conservation Program: Test Procedures for Walk-In Coolers and**  **Walk-In Freezers**

Correction

In rule document 2011–8690 appearing on pages 21579–21612 in the issue of Friday, April 15, 2011, the regulatory text is being republished below in its entirety due to errors in the equations.
**PART 431—[CORRECTED]**

On page 21604, in the third column, in the third paragraph from the top, the regulatory text should read as set forth below:

**PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN**  **COMMERCIAL AND INDUSTRIAL EQUIPMENT** 

■ 1. The authority citation for part 431 continues to read as follows:

Authority: 42 U.S.C. 6291–6317.

■ 2. Section 431.302 is amended by adding, in alphabetical order, new definitions for ‘‘Display door, ’’ ‘‘Display panel, ’’ ‘‘Door’’

, ‘‘Envelope, ’’ ‘‘ K-factor, ’’

‘‘Panel, ’’ ‘‘Refrigerated, ’’ ‘‘Refrigeration system, ’’ and ‘‘ U-factor’’ to read as follows:
**§ 431.302 Definitions concerning walk-in coolers and walk-in freezers.**  * * * * *

Display door means a door designed for product movement, display, or both, rather than the passage of persons.

Display panel means a panel that is entirely or partially comprised of glass, a transparent material, or both and is used for display purposes.

Door means an assembly installed in an opening on an interior or exterior wall that is used to allow access or close off the opening and that is movable in a sliding, pivoting, hinged, or revolving manner of movement. For walk-in coolers and walk-in freezers, a door includes the door panel, glass, framing materials, door plug, mullion, and any other elements that form the door or part of its connection to the wall.

Envelope means— (1) The portion of a walk-in cooler or walk-in freezer that isolates the interior, refrigerated environment from the ambient, external environment; and

(2) All energy-consuming components of the walk-in cooler or walk-in freezer that are not part of its refrigeration system.

K-factor means the thermal conductivity of a material.
* * * * *

Panel means a construction component that is not a door and is used to construct the envelope of the walk-in, i.e., elements that separate the interior refrigerated environment of the walk-in from the exterior.

Refrigerated means held at a temperature at or below 55 degrees Fahrenheit using a refrigeration system.

Refrigeration system means the mechanism (including all controls and other components integral to the system’s operation) used to create the refrigerated environment in the interior of a walk-in cooler or freezer, consisting of:

(1) A packaged dedicated system where the unit cooler and condensing unit are integrated into a single piece of equipment; or

(2) A split dedicated system with separate unit cooler and condensing unit sections; or

(3) A unit cooler that is connected to a multiplex condensing system.

U-factor means the heat transmission in a unit time through a unit area of a specimen or product and its boundary air films, induced by a unit temperature difference between the environments on each side.
* * * * *

■ 3. Section 431.303 is amended by:

■ a. Redesignating paragraph (b) as paragraph (c);

■ b. Adding at the end of the sentence in redesignated paragraph (c)(1), ‘‘ and Appendix A to Subpart R of Part 431 ’’

. ■ c. Adding new paragraphs (b), (c)(2), (d), and (e) to read as follows.
**§ 431.303 Materials incorporated by reference.**  * * * * *

(b) AHRI. Air-Conditioning, Heating, and Refrigeration Institute, 2111 Wilson Boulevard, Suite 500, Arlington, VA 22201, (703) 600–0366, or http:// www.ahrinet.org.

(1) AHRI 1250 (I–P)–2009, ( ‘‘AHRI 1250 ’’ ), 2009 Standard for Performance Rating of Walk-In Coolers and Freezers, approved 2009, IBR approved for § 431.304.

(2) [Reserved] (c) * * * (2) ASTM C1363–05, ( ‘‘ASTM C1363 ’’ ), Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus, approved May 1, 2005, IBR approved for Appendix A to Subpart R of part 431.

(d) CEN. European Committee for Standardization (French: Norme or German: Norm), Avenue Marnix 17, B– 1000 Brussels, Belgium, Tel: + 32 2 550 08 11, Fax: + 32 2 550 08 19 or http:// www.cen.eu/.

(1) DIN EN 13164:2009–02, ( ‘‘DIN EN 13164 ’’ ), Thermal insulation products for buildings—Factory made products of extruded polystyrene foam (XPS)— Specification, approved February 2009, IBR approved for Appendix A to Subpart R of part 431.

(2) DIN EN 13165:2009–02, ( ‘‘DIN EN 13165 ’’ ), Thermal insulation products for buildings—Factory made rigid polyurethane foam (PUR) products— Specification, approved February 2009, IBR approved for Appendix A to Subpart R of part 431.

(e) NFRC. National Fenestration Rating Council, 6305 Ivy Lane, Ste. 140, Greenbelt, MD 20770, (301) 589–1776,

or http://www.nfrc.org/.

(1) NFRC 100–2010[E0A1], ( ‘‘NFRC 100 ’’ ), Procedure for Determining Fenestration Product U-factors, approved June 2010, IBR approved for Appendix A to Subpart R of part 431.

(2) [Reserved]

■ 4. Section 431.304 is amended by redesignating paragraphs (b)(2), (b)(3), (b)(4), and (b)(5) as (b)(1), (b)(2), (b)(3), and (b)(4), respectively, and by adding new paragraphs (b)(5), (b)(6), (b)(7), and (b)(8) to read as follows.

**§ 431.304 Uniform test method for the measurement of energy consumption of**  **walk-in coolers and walk-in freezers.** * * * * *

(b) * * * (5) Determine the U-factor, conduction load, and energy use of walk-in cooler and walk-in freezerdisplay panels, floor panels, and nonfloor panels by conducting the test procedure set forth in Appendix A to this subpart, sections 4.1, 4.2, and 4.3, respectively.

(6) Determine the energy use of walkin cooler and walk-in freezer display doors and non-display doors by conducting the test procedure set forth in Appendix A to this subpart, sections 4.4 and 4.5, respectively.

(7) Determine the Annual Walk-in Energy Factor of walk-in cooler and walk-in freezer refrigeration systems by conducting the test procedure set forth in AHRI 1250 (incorporated by reference; see § 431.303).

(8) Determine the annual energy consumption of walk-in cooler and walk-in freezer refrigeration systems:


### 33632 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

(i) For systems consisting of a packaged dedicated system or a split dedicated system, where the condensing unit is located outdoors, by conducting the test procedure set forth in AHRI 1250 and recording the annual energy consumption term in the equation for annual walk-in energy factor in section 7 of AHRI 1250:

where t j and n represent the outdoor temperature at each bin j and the number of hours in each bin j, respectively, for the temperature bins listed in Table D1 of AHRI 1250. (ii) For systems consisting of a packaged dedicated system or a split dedicated system where the condensing unit is located in a conditioned space, by performing the following calculation:

where BL  ̇ H and BL  ̇ L for refrigerator and freezer systems are defined in sections 6.2.1 and 6.2.2, respectively, of AHRI 1250 and the annual walk-in energy factor is calculated from the results of the test procedures set forth in AHRI 1250. (iii) For systems consisting of a single unit cooler or a set of multiple unit coolers serving a single piece of equipment and connected to a multiplex condensing system, by performing the following calculation:

where BL  ̇ H and BL  ̇ L for refrigerator and freezer systems are defined in section 7.9.2.2 and 7.9.2.3, respectively, of AHRI 1250 and the annual walk-in energy factor is calculated from the results of the test procedures set forth in AHRI 1250.

■ 5. Appendix A to subpart R of part 431 is added to read as follows: Appendix A to Subpart R of Part 431— Uniform Test Method for the Measurement of Energy Consumption ofthe Components of Envelopes of WalkIn Coolers and Walk-In Freezers
1.0 Scope

This appendix covers the test requirements used to measure the energy consumption of the components that make up the envelope of a walk-in cooler or walk-in freezer.
2.0 Definitions

The definitions contained in § 431.302 are applicable to this appendix. 3.0 Additional Definitions 3.1 Automatic door opener/closer means a device or control system that

‘‘ automatically’’ opens and closes doors without direct user contact, such as a motion sensor that senses when a forklift is approaching the entrance to a door and opens it, and then closes the door after the forklift has passed.

3.2 Core region means the part of the panel that is not the edge region.

3.3 Edge region means a region of the panel that is wide enough to encompass any framing members and edge effects. If the panel contains framing members (e.g. a wood frame) then the width of the edge region must be as wide as any framing member plus 2 in.
± 0.25 in. If the panel does not contain framing members then the width of the edge region must be 4 in ± 0.25 in. For walk-in panels that utilize vacuum insulated panels (VIP) for insulation, the width of the edge region must be the lesser of 4.5 in. ± 1 in. or the maximum width that does not cause the VIP to be pierced by the cutting device when the edge region is cut.

3.4 Surface area means the area of the surface of the walk-in component that would be external to the walk-in. For example, for panel, the surface area would be the area of the side of the panel that faces the outside of the walk-in. It would not include edges of the panel that are not exposed to the outside of the walk-in.

3.5 Rating conditions means, unless explicitly stated otherwise, all conditions shown in Table A.1. For installations where two or more walk-in envelope components share any surface(s), the ‘‘ external conditions ’’ of the shared surface(s) must reflect the internal conditions of the adjacent walk-in. For example, if a walk-in component divides a walk-in freezer from a walk-in cooler, then the internal conditions are the freezer rating conditions and the external conditions are the cooler rating conditions.

3.6 Percent time off (PTO) means the percent of time that an electrical device is assumed to be off.



### TABLE 

### A.1—T EMPERATURE 

### C ONDITIONS

**Internal Temperatures (cooled space within the envelope)**

Cooler Dry Bulb Temperature .................................................................................................... ............................................................ 35 ° F. Freezer Dry Bulb Temperature ...................................................................................................

........................................................... ¥ 10 ° F.

**External Temperatures (space external to the envelope)**

Freezer and Cooler Dry Bulb Temperatures ....................................................................................... .................................................. 75 ° F.


### 33633 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

TABLE 

### A.1—T EMPERATURE 

### C ONDITIONS

### —Continued

**Subfloor Temperatures**

Freezer and Cooler Dry Bulb Temperatures ....................................................................................... .................................................. 55 ° F.

4.0 Calculation Instructions

4.1 Display Panels (a) Calculate the U-factor of the display panel in accordance with section 5.3 of this appendix, Btu/h-ft 2

- ° F.

(b) Calculate the display panel surface area, as defined in section 3.4 of this appendix, A dp , ft 2 , with standard geometric formulas or engineering software.

(c) Calculate the temperature differential, DT dp , ° F, for the display panel, as follows:

Where: T DB,ext,dp = dry-bulb air external temperature,

° F, as prescribed in Table A.1; and T DB,int,dp = dry-bulb air temperature internal to the cooler or freezer, ° F, as prescribed in Table A.1. (d) Calculate the conduction load through the display panel, Q cond-dp , Btu/ h, as follows:

Where: A dp = surface area of the walk-in display panel, ft 2 ; DT dp = temperature differential between refrigerated and adjacent zones, ° F; and U dp = thermal transmittance, U-factor, of the display panel in accordance with section 5.3 of this appendix, Btu/h-ft 2

- ° F. (e) Select Energy Efficiency Ratio (EER), as follows: (1) For coolers, use EER = 12.4 Btu/ W-h

(2) For freezers, use EER = 6.3 Btu/Wh (f) Calculate the total daily energy consumption, E dp , kWh/day, as follows:

Where: Q

cond, dp = the conduction load through the display panel, Btu/h; and EER = EER of walk-in (cooler or freezer), Btu/W-h.

4.2 Floor Panels

(a) Calculate the surface area, as defined in section 3.4 of this appendix, of the floor panel edge, as defined in section 3.3, A fp edge , ft 2 , with standard geometric formulas or engineering software as directed in section 5.1 of this appendix.

(b) Calculate the surface area, as defined in section 3.4 of this appendix, of the floor panel core, as defined in section 3.2, A fp core , ft 2 , with standard geometric formulas or engineering software as directed in section 5.1 of this appendix. (c) Calculate the total area of the floor panel, A fp, ft 2 , as follows:

Where: A fp core = floor panel core area, ft 2 ; and A fp edge = floor panel edge area, ft 2

.

(d) Calculate the temperature differential of the floor panel, DTfp , ° F, as follows:

Where: T ext, fp = subfloor temperature, ° F, as prescribed in Table A.1; and T DB,int, fp = dry-bulb air internal temperature,

° F, as prescribed in Table A.1. If the panel spans both cooler and freezer temperatures, the freezer temperature must be used. (e) Calculate the floor foam degradation factor, DF fp , unitless, as follows: Where: RLTTR,fp = the long term thermal resistance Rvalue of the floor panel foam in accordance with section 5.2 of this appendix, h-ft 2

- ° F/Btu; and Ro,fp = the R-value of foam determined in accordance with ASTM C518 (incorporated by reference; see section § 431.303) for purposes of compliance with the appropriate energy conservation standard, h-ft 2

- ° F/Btu. (f) Calculate the U-factor for panel core region modified by the long term thermal transmittance of foam, ULT,fp

core , Btu/h-ft 2

- ° F, as follows: Where: U fp core = the U-factor in accordance with section 5.1 of this appendix, Btu/h-ft 2

- ° F; and DF fp = floor foam degradation factor, unitless.

(g) Calculate the overall U-factor of the floor panel, U fp , Btu/h-ft 2

- ° F, as follows:


### 33634 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

Where: A fp edge = area of floor panel edge, ft 2 ; U fp edge = U-factor for panel edge area in accordance with section 5.1 of this appendix, Btu/h-ft 2

- ° F; A fp core = area of floor panel core, ft 2 ; ULT,fp core = U-factor for panel core region modified by the long term thermal transmittance of foam, Btu/h-ft 2

- ° F; and A fp = total area of the floor panel, ft 2

. (h) Calculate the conduction load through floor panels, Q cond-fp , Btu/h,

Where: DT fp = temperature differential across the floor panels, ° F; A fp = total area of the floor panel, ft 2 ; and U fp = overall U-factor of the floor panel, Btu/ h-ft 2

- ° F. (i) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ W-h (2) For freezers, use EER = 6.3 Btu/Wh (j) Calculate the total daily energy consumption, E fp , kWh/day, as follows:

Where: Q

cond-fp = the conduction load through the

floor panel, Btu/h; and EER = EER of walk-in (cooler or freezer), Btu/W-h.

4.3 Non-Floor Panels

(a) Calculate the surface area, as defined in section 3.4, of the non-floor panel edge, as defined in section 3.3, A nf edge , ft 2 , with standard geometric formulas or engineering software as directed in section 5.1 of this appendix.

(b) Calculate the surface area, as defined in section 3.4, of the non-floor panel core, as defined in section 3.2, A nf

core, ft 2, with standard geometric formulas or engineering software as directed in section 5.1 of this appendix. (c) Calculate total non-floor panel area, A nf, ft 2 :

Where: A nf edge = non-floor panel edge area, ft 2 ; and A nf core = non-floor panel core area, ft 2

.

(d) Calculate temperature differential, DT nf, ° F:

Where: T DB,ext, nf = dry-bulb air external temperature,

° F, as prescribed in Table A.1; and T DB,int, nf = dry-bulb air internal temperature,

° F, as prescribed in Table A.1. If the nonfloor panel spans both cooler and freezer temperatures, then the freezer temperature must be used. (e) Calculate the non-floor foam degradation factor, DF nf, unitless, as follows: Where:
RLTTR,nf = the R-value of the non-floor panel foam in accordance with section 5.2 of this appendix, h- ft 2

- ° F/Btu; and Ro,nf = the R-value of foam determined in accordance with ASTM C518 (incorporated by reference; see section § 431.303) for purposes of compliance with the appropriate energy conservation standard, h-ft 2

- ° F/Btu.
(f) Calculate the U-factor, ULT,nf core , Btu/h-ft 2

- ° F, as follows: Where:
U nf core = the U-factor, in accordance with section 5.1 of this appendix, of non-floor panel, Btu/h- ft 2

- ° F; and DF nf = the non-floor foam degradation factor, unitless. (g) Calculate the overall U-factor of the non-floor panel, U nf, Btu/h-ft 2

- ° F, as follows:

Where:
A nf edge = area of non-floor panel edge, ft 2 ; U nf edge = U-factor for non-floor panel edge area in accordance with section 5.1 of this appendix, Btu/h-ft 2

- ° F; A nf core = area of non-floor panel core, ft 2 ; ULT,nf core = U-factor for non-floor panel core region modified by the long term thermal transmittance of foam, Btu/h-ft 2

- ° F; and A nf = total area of the non- floor panel, ft 2

. (h) Calculate the conduction load through non-floor panels, Q cond-nf, Btu/h,


### 33635 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

Where:
DT nf = temperature differential across the non-floor panels, ° F; A nf = total area of the non-floor panel, ft 2 ; and U nf = overall U-factor of the non-floor panel, Btu/h-ft 2

- ° F. (i) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ W-h (2) For freezers, use EER = 6.3 Btu/Wh (j) Calculate the total daily energy consumption, E nf, kWh/day, as follows:

Where: Q

cond-nf = the conduction load through the

non-floor panel, Btu/h; and EER = EER of walk-in (cooler or freezer), Btu/ W-h. 4.4 Display Doors

4.4.1 Conduction Through Display Doors

(a) Calculate the U-factor of the door in accordance with section 5.3 of this appendix, Btu/h-ft 2

- ° F (b) Calculate the surface area, as defined in section 3.4 of this appendix, of the display door, A dd , ft 2 , with standard geometric formulas or engineering software.

(c) Calculate the temperature differential, DT dd , ° F, for the display door as follows:

Where:
T DB,ext, dd = dry-bulb air temperature external to the display door, ° F, as prescribed in Table A.1; and T DB,int, dd = dry-bulb air temperature internal to the display door, ° F, as prescribed in Table A.1. (d) Calculate the conduction load through the display doors, Q cond-dd , Btu/ h, as follows:

Where:
DT dd = temperature differential between refrigerated and adjacent zones, ° F; A dd = surface area walk-in display doors, ft 2 ; and U dd = thermal transmittance, U-factor of the door, in accordance with section 5.3 of this appendix, Btu/h-ft 2

- ° F.

4.4.2 Direct Energy Consumption of Electrical Component(s) of Display Doors

Electrical components associated with display doors could include, but are not limited to: heater wire (for anti-sweat or anti-freeze application); lights (including display door lighting systems); control system units; and

sensors.

(a) Select the required value for percent time off (PTO) for each type of electricity consuming device, PTO t (%)

(1) For lights without timers, control system or other demand-based control, PTO = 25 percent. For lighting withtimers, control system or other demandbased control, PTO = 50 percent.

(2) For anti-sweat heaters on coolers (if included): Without timers, control system or other demand-based control, PTO = 0 percent. With timers, control system or other demand-based control, PTO = 75 percent. For anti-sweat heaters on freezers (if included): Without timers, control system or other auto-shut-off systems, PTO = 0 percent. With timers, control system or other demand-based control, PTO = 50 percent.

(3) For all other electricity consuming devices: Without timers, control system, or other auto-shut-off systems, PTO = 0 percent. If it can be demonstrated that the device is controlled by a preinstalled timer, control system or other auto-shut-off system, PTO = 25 percent.

(b) Calculate the power usage for each type of electricity consuming device, P dd-comp,u,t , kWh/day, as follows:

Where:u = the index for each of type of electricityconsuming device located on either (1) the interior facing side of the display door or within the inside portion of the display door, (2) the exterior facing side of the display door, or (3) any combination of (1) and (2). For purposes of this calculation, the interior index is represented by u = int and the exterior index is represented by u = ext. If the electrical component is both on the interior and exterior side of the display door then u = int. For anti-sweat heaters sited anywhere in the display door, 75 percent of the total power is be attributed to u = int and 25 percent of the total power is attributed to u = ext; t = index for each type of electricity consuming device with identical rated power; P rated,u,t = rated power of each component, of type t, kW; PTO u,t = percent time off, for device of type t, %; and

nu,t = number of devices at the rated power of type t, unitless. (c) Calculate the total electrical energy consumption for interior and exterior power, P dd-tot, int (kWh/day) and P dd-tot, ext (kWh/day), respectively, as follows:


### 33636 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

Where: t = index for each type of electricity consuming device with identical rated
power; P dd-comp,int, t = the energy usage for an electricity consuming device sited on the interior facing side of or in the display door, of type t, kWh/day; and P dd-comp,ext, t = the energy usage for an electricity consuming device sited on the external facing side of the display door, of type t, kWh/day. (d) Calculate the total electrical energy consumption, P dd-tot , (kWh/day), as follows:

Where:

P dd-tot,int = the total interior electrical energy usage for the display door, kWh/day; and
P dd-tot,ext = the total exterior electrical energy usage for the display door, kWh/day. 4.4.3 Total Indirect Electricity Consumption Due to Electrical Devices

(a) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ Wh (2) For freezers, use EER = 6.3 Btu/Wh (b) Calculate the additional refrigeration energy consumption due to thermal output from electrical components sited inside the display door, C dd-load , kWh/day, as follows:

Where:
EER = EER of walk-in cooler or walk-in freezer, Btu/W-h; and P dd-tot,int = The total internal electrical energy consumption due for the display door, kWh/day. 4.4.4 Total Display Door Energy Consumption

(a) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ W-h (2) For freezers, use EER = 6.3 Btu/Wh (b) Calculate the total daily energy consumption due to conduction thermal load, E dd, thermal , kWh/day, as follows:



### E Q

EER dd,thermal cond,dd 

### = × ×

× 24 h 1 kW 1 day 000 W 4-25 1 ( )

Where: Q

cond, dd = the conduction load through the display door, Btu/h; and EER = EER of walk-in (cooler or freezer), Btu/ W-h. (c) Calculate the total energy, E dd,tot , kWh/day,

Where:

E dd, thermal = the total daily energy consumption due to thermal load for the display door, kWh/day; P dd-tot = the total electrical load, kWh/day; and C dd-load = additional refrigeration load due to thermal output from electrical components contained within the display door, kWh/day.

4.5 Non-Display Doors

4.5.1 Conduction Through NonDisplay Doors

(a) Calculate the surface area, as defined in section 3.4 of this appendix, of the non-display door, A nd , ft 2 , with standard geometric formulas or with engineering software.

(b) Calculate the temperature differential of the non-display door, DT nd , ° F, as follows:

Where:
T DB,ext, nd = dry-bulb air external temperature,

° F, as prescribed by Table A.1; and T DB,int, nd = dry-bulb air internal temperature,

° F, as prescribed by Table A.1. If the component spans both cooler and freezer spaces, the freezer temperature must be used. (c) Calculate the conduction load through the non-display door: Q cond-nd , Btu/h,


### 33637 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

Where:
DT nd = temperature differential across the non-display door, ° F; U nd = thermal transmittance, U-factor of the door, in accordance with section 5.3 of this appendix, Btu/h-ft 2

- ° F; and A nd = area of non-display door, ft 2

. 4.5.2 Direct Energy Consumption of Electrical Components of Non-Display Doors

Electrical components associated with a walk-in non-display door compriseany components that are on the nondisplay door and that directly consume electrical energy. This includes, but isnot limited to, heater wire (for antisweat or anti-freeze application), control system units, and sensors.

(a) Select the required value for percent time off for each type of electricity consuming device, PTO t (%)

(1) For lighting without timers, control system or other demand-based control, PTO = 25 percent. For lighting with timers, control system or other demand-based control, PTO = 50 percent.

(2) For anti-sweat heaters on coolers (if included): Without timers, control system or other demand-based control, PTO = 0 percent. With timers, control system or other demand-based control, PTO = 75 percent. For anti-sweat heaters on freezers (if included): Without timers, control system or other auto-shut-off systems, PTO = 0 percent. With timers, control system or other demand-based control, PTO = 50 percent.

(3) For all other electricity consuming devices: Without timers, control system, or other auto-shut-off systems, PTO = 0 percent. If it can be demonstrated that the device is controlled by a preinstalled timer, control system or other auto-shut-off system, PTO = 25 percent.

(b) Calculate the power usage for each type of electricity consuming device, P nd-comp,u,t , kWh/day, as follows:

Where:u = the index for each of type of electricityconsuming device located on either (1) the interior facing side of the display door or within the inside portion of the display door, (2) the exterior facing side of the display door, or (3) any combination of (1) and (2). For purposes of this calculation, the interior index is represented by u = int and the exterior index is represented by u = ext. If the electrical component is both on the interior and exterior side of the display door then u = int. For anti-sweat heaters sited anywhere in the display door, 75 percent of the total power is be attributed to u=int and 25 percent of the total power is attributed to u=ext; t = index for each type of electricity consuming device with identical rated power; P rated,u,t = rated power of each component, of type t, kW; PTO u,t = percent time off, for device of type t, %; and

n u,t = number of devices at the rated power of type t, unitless. (c) Calculate the total electrical energy consumption for interior and exterior power, P nd-tot, int (kWh/day) and P nd-tot, ext (kWh/day), respectively, as follows: Where: t = index for each type of electricity consuming device with identical rated
power; P nd-comp,int, t = the energy usage for an electricity consuming device sited on the internal facing side or internal to the non-display door, of type t, kWh/day; and P nd-comp,ext, t = the energy usage for an electricity consuming device sited on the external facing side of the non-display door, of type t, kWh/day. For anti-sweat heaters,
(d) Calculate the total electrical energy consumption, P nd-tot , kWh/day, as follows:

Where:
P nd-tot,int = the total interior electrical energy usage for the non-display door, of type t, kWh/day; and P nd-tot,ext = the total exterior electrical energy usage for the non-display door, of type t, kWh/day. 4.5.3 Total Indirect Electricity Consumption Due to Electrical Devices

(a) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ Wh (2) For freezers, use EER = 6.3 Btu/Wh (b) Calculate the additional refrigeration energy consumption due to thermal output from electricalcomponents associated with the nondisplay door, C nd-load , kWh/day, as follows:

Where: EER = EER of walk-in cooler or freezer, Btu/ W-h; and P nd-tot,int = the total interior electrical energy consumption for the non-display door, kWh/day. 4.5.4 Total Non-Display Door Energy Consumption

(a) Select Energy Efficiency Ratio (EER), as follows:

(1) For coolers, use EER = 12.4 Btu/ W-h (2) For freezers, use EER = 6.3 Btu/Wh (b) Calculate the total daily energy consumption due to thermal load, E nd,

thermal , kWh/day, as follows:


### 33638 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

Where: Q

cond-nd = the conduction load through the

non-display door, Btu/hr; and EER = EER of walk-in (cooler or freezer), Btu/ W-h. (c) Calculate the total energy, E nd,tot , kWh/day, as follows:

Where: E nd, thermal = the total daily energy consumption due to thermal load for the non-display door, kWh/day; P nd-tot = the total electrical energy consumption, kWh/day; and C nd-load = additional refrigeration load due to thermal output from electrical components contained on the inside face of the non-display door, kWh/day.
5.0 Test Methods and Measurements

5.1 Measuring Floor and Non-floor Panel U-factors

Follow the test procedure in ASTM C1363, (incorporated by reference; see § 431.303), exactly, with these exceptions: (1) Test Sample Geometry Requirements (i) Two (2) panels, 8 ft. ± 1 ft. long and 4 ft. ± 1 ft. wide must be used.

(ii) The panel edges must be joined using the manufacturer’s panel interface joining system (e.g., camlocks, standard gasketing, etc.).

(iii) The Panel Edge Test Region, see figure 1, must be cut using the following dimensions:

1. If the panel contains framing members (e.g. a wood frame), then the width of edge (W) must be as wide as any framing member plus 2 in. ± 0.25 in. For example, if the face of the panel contains 1.5 in. thick framing members around the edge of the panel, then width of edge (W) = 3.5 in. ± 0.25 in and the Panel Edge Test Region would be 7 in. ± 0.5 in. wide.

2. If the panel does not contain framing members, then the width of edge (W) must be 4 in ± 0. 25 in.

3. Walk-in panels that utilize vacuum insulated panels (VIP) for insulation, width of edge (W) = the lesser of 4.5 in. ± 1 in. or the maximum width that does not cause the VIP to be pierced by the cutting device when the edge region is cut.

(iv) Panel Core Test Region of length Y and height Z, see Figure 1, must also be cut from one of the two panels such that panel length = Y + X, panel height = Z +X where X=2W.

(2) Testing Conditions

(i) The air temperature on the ‘‘hot side ’’ , as denoted in ASTM C1363, of the non-floor panel should be maintained at
75 ° F ± 1 ° F. 1. Exception: When testing floor panels, the air temperature should be maintained at 55 ° F ± 1 ° F.


### 33639 Federal Register / Vol. 76, No. 111 / Thursday, June 9, 2011 / Rules and Regulations

(ii) The temperature on the ‘‘ cold side ’’ , as denoted in ASTM C1363, of the panel should be maintained at 35 ° F ± 1 ° F for the panels used for walk-in coolers and

¥ 10 ° F ± 1 ° F for panels used for walk-in freezers.

(iii) The air velocity must be maintained as natural convection conditions as described in ASTM C1363. The test must be completed using the masked method and with surround panel in place as described in ASTM C1363. (3) Required Test Measurements

(i) Non-floor Panels 1. Panel Edge Region U-factor: U nf, edge 2. Panel Core Region U-factor: U nf, core (ii) Floor Panels 1. Floor Panel Edge Region U-factor: U fp, edge

2. Floor Panel Core Region U-factor: U fp, core
5.2 Measuring Long Term Thermal Resistance (LTTR) of Insulating Foam

Follow the test procedure in Annex C of DIN EN 13164 or Annex C of DIN EN 13165 (as applicable), (incorporated by reference; see § 431.303), exactly, with these exceptions: (1) Temperatures During Thermal Resistance Measurement

(i) For freezers: 20 ° F ± 1 ° F must be used.

(ii) For coolers: 55 ° F ± 1 ° F must be used. (2) Sample Panel Preparation

(i) A 800mm × 800mm square ( × thickness of the panel) section cut from the geometric center of the panel that is being tested must be used as the sample for completing DIN EN 13165.

(ii) A 500mm × 500mm square ( × thickness of the panel) section cut from the geometric center of the panel that is being tested must be used as the sample for completing DIN EN 13164. (3) Required Test Measurements

(i) Non-floor Panels 1. Long Term Thermal Resistance: RLTTR,nf

(ii) Floor Panels 1. Long Term Thermal Resistance: RLTTR,fp
5.3 U-factor of Doors and Display Panels

(a) Follow the procedure in NFRC 100, (incorporated by reference; see § 431.303), exactly, with these exceptions:

(1) The average convective heat transfer coefficient on both interior and exterior surfaces of the door should be based on the coefficients described in section 4.3 of NFRC 100. (2) Internal conditions: (i) Air temperature of 35 ° F (1.7 ° C) for cooler doors and

¥ 10 ° F (

¥ 23.3 ° C) for freezer doors

(ii) Mean inside radiant temperature must be the same as shown in section 5.3(a)(2)(i), above.

(3) External conditions (i) Air temperature of 75 ° F (23.9 ° C) (ii) Mean outside radiant temperature must be the same as section 5.3(a)(3)(i), above.

(4) Direct solar irradiance = 0 W/m 2 (Btu/h-ft 2 ).

(b) Required Test Measurements (i) Display Doors and Display Panels 1. Thermal Transmittance: U dd (ii) Non-Display Door 1. Thermal Transmittance: U nd [FR Doc. C1–2011–8690 Filed 6–8–11; 8:45 am]

**BILLING CODE 1505–01–D**

**DEPARTMENT OF HOMELAND SECURITY** 

**Coast Guard**

**33 CFR Part 165**
**[Docket No. USCG–2011–0222]**

**RIN 1625–AA00**
**Safety Zone; New York Water Taxi 10th**  **Anniversary Fireworks , Upper New**  **York Bay, Red Hook, NY**

**AGENCY :**  Coast Guard, DHS.

**ACTION :**  Temporary Final rule.

**SUMMARY :**  The Coast Guard is establishing a temporary safety zone in the Captain of the Port (COTP) Zone New York on the navigable waters of the Upper New York Bay in the vicinity of Red Hook, New York for a fireworks display. This temporary safety zone is necessary to ensure the safety of vessels and spectators from hazards associated with fireworks displays. Persons and vessels are prohibited from entering into, transiting through, mooring, or anchoring within the temporary safety zone unless authorized by the COTP New York or the designated on-scene representative.

**DATES :**  This rule is effective from 8:30 p.m. until 10 p.m. on June 21, 2011.

**ADDRESSES :**  Documents indicated in this preamble as being available in the docket are part of docket USCG–2011– 0222 and are available online by going to http://www.regulations.gov, inserting USCG–2011–0222 in the ‘‘ Keyword ’’ box, and then clicking ‘‘ Search. ’’ They are also available for inspection or copying at the Docket Management Facility (M–30), U.S. Department of Transportation, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.

**FOR FURTHER INFORMATION CONTACT :**  If you have questions on this temporary rule, call or e-mail LTJG Eunice James, Coast Guard Sector New York Waterways Management Division; 718– 354–4163, e-mail Eunice.A.James@uscg.mil. If you have questions on viewing the docket, call Renee V. Wright, Program Manager, Docket Operations, telephone 202–366– 9826.

**SUPPLEMENTARY INFORMATION :**  Regulatory Information

The Coast Guard is issuing this temporary final rule without prior notice and opportunity to comment pursuant to authority under section 4(a) of the Administrative Procedure Act (APA) (5 U.S.C. 553(b)). This provision authorizes an agency to issue a rule without prior notice and opportunity to comment when the agency for good cause finds that those procedures are

‘‘ impracticable, unnecessary, or contrary to the public interest. ’’ Under 5 U.S.C. 553(b)(B), the Coast Guard finds that good cause exists for not publishing a notice of proposed rulemaking (NPRM) with respect to this rule because the Coast Guard did not receive information regarding the dates and scope of the event in time to publish a NPRM followed by a final rule before the effective date. The sponsor was not aware of the requirements for submitting an application for a marine event 135 days in advance, resulting in a late notification. The sponsor is now aware of this requirement for all future events. Nevertheless, the sponsor is unable to reschedule this event due to other activities being held in conjunction with the fireworks display. The safety zone is necessary to provide for the safety of event participants, spectator craft, and other vessels operating near the event area. For the safety concerns noted, it is in the public interest to have these regulations in effect during the event.

Under 5 U.S.C. 553(d)(3), the Coast Guard finds that good cause exists for making this rule effective less than 30 days after publication in the Federal Register . The rule must become effective on the date specified above in order to provide for the safety of the public including spectators and vessels operating in the area near the fireworks display.