Baseline Test

Fresh Food 

Temperature 

(°F)

-2 37

-1 38

0 39

1 40

2 41

-2 39

-1 39

0 39

1 39

2 39

-2 39

-1 39

0 39

1 39

2 39

-2 39

-1 39

0 39

1 39

2 39

This spreadsheet evaluates the change in the energy use measurement associated with variation in co

calculations are based on test results reported in NIST Technical Notes 1697 and 1759. Data for 2011 

for 2012 Samples 1 and 2 are provided in the second Technical Note. NIST provided energy use and 

temperature setting combinations which allows use of the triangulation method to calculate energy u

spreadsheet uses this information to determine the total energy use based on 1.8 lb/day ice productio

the standardized temperatures (39°F for the fresh food compartment and 0°F for the freezer compart

and icemaking tests deviate the same amount from the standardized temperatures, and (b) compartm

but deviate for the icemaking tests. The defrost energy use for the 2012 Samples is estimated as 4.5 p

energy use, since the NIST report does not provide defrost energy use measurements for these units. 

the 2011 unit tests.

Impact of temperature change between 

the icemaking and baseline tests

Fresh Food 

Freezer 

Compartment

Temperature 

Variation (°F)

Impact of variation in the baseline test 

temperature with no icemaking/baseline 

test temperature difference

Fresh Food 

Freezer 

1.00%

1.50%

2.00%

in

E

nerg

y

Measurement

Baseline Test Variation from Target Temperatures

C

o

m

p

a

r

t

m

e

n

t
-2.00%

-1.50%

-1.00%

-0.50%

0.00%

0.50%

1.00%

-3 -2 -1 0 1 2

Percent C

h

a

n

ge in

E

nerg

y

Measurement

Change in Compartment Temperature (°F)

-2.0%

-1.5%

-1.0%

-0.5%

0.0%

0.5%

1.0%

1.5%

2.0%

-3 -2 -1 0 1 2

Percent C

h

a

n

ge in

E

nerg

y

Measurement

Change in Compartment Temperature (°F)

F

r

e

s

h

F

o

o

d

C

o

m

p

a

r

t

m

e

n

t

V

a

ria

tio

n

F

r

e

e

z

e

r

C

o

m

p

a

r

t

m

e

n

t

V

a

ria

tio

n
Baseline Test Icemaking Test 2012 Sample 1 2012 Sample 2

Freezer 

Temperature 

(°F)

Fresh Food 

Temperature 

(°F)

Freezer 

Temperature 

(°F)

Energy Use 

(kWh)

Percent 

Change

Energy Use 

(kWh)

Percent 

Change

0 37 0 582 -0.38% 539 1.6%

0 38 0 583 -0.2% 535 0.8%

0 39 0 584 0.0% 531 0.0%

0 40 0 585 0.2% 527 -0.7%

0 41 0 587 0.4% 523 -1.4%

-2 39 -2 587 0.4% 527 -0.7%

-1 39 -1 586 0.2% 529 -0.4%

0 39 0 584 0.0% 531 0.0%

1 39 1 583 -0.2% 533 0.4%

2 39 2 581 -0.5% 535 0.8%

0 37 0 585 0.1% 603 13.5%

0 38 0 585 0.1% 566 6.6%

0 39 0 584 0.0% 531 0.0%

0 40 0 584 -0.1% 498 -6.3%

0 41 0 584 -0.1% 466 -12.3%

0 39 -2 595 1.9% 523 -1.5%

0 39 -1 590 1.0% 527 -0.8%

0 39 0 584 0.0% 531 0.0%

0 39 1 578 -1.0% 536 0.9%

0 39 2 572 -2.2% 541 1.9%

associated with variation in compartment temperatures for different parts of the icemaking test. The 

1697 and 1759. Data for 2011 Samples 3 and 4 are provided in the first of these Technical Notes, while data 

NIST provided energy use and ice production data for each of the four evaluated refrigerator-freezers at three 

n method to calculate energy use and ice production rate for selected compartment temperatures. The 

ed on 1.8 lb/day ice production for each refrigerator-freezer when compartment temperatures are equal to 

nd 0°F for the freezer compartment), and also for tests in which (a) compartment temperatures for baseline 

mperatures, and (b) compartment temperatures match the standardized temperatures for the baseline tests 

 Samples is estimated as 4.5 percent of the energy use of the product not including defrost and icemaking 

measurements for these units. This 4.5 percent is the average fraction of energy represented by defrost for 

1.0%

1.5%

2.0%

in

E

nerg

y

Measurement

et Temperatures Icemaking Test Temperature Changes
3

2012 Sample 1

2012 Sample 2

2011 Sample 3

2011 Sample 4

-2.0%

-1.5%

-1.0%

-0.5%

0.0%

0.5%

1.0%

-3 -2 -101

Percent Change in Energy Measurement

Change in Compartment Temperature (°F)

3

2012 Sample 1

2012 Sample 2

2011 Sample 3

2011 Sample 4

-2.0%

-1.5%

-1.0%

-0.5%

0.0%

0.5%

1.0%

1.5%

2.0%

-3 -2 -101

Percent Change in Energy Measurement

Change in Compartment Temperature (°F)
2011 Sample 3 2011 Sample 4

Energy Use 

(kWh)

Percent 

Change

Energy Use 

(kWh)

Percent 

Change

685 -0.1% 671 -0.1%

686 -0.1% 671 0.0%

686 0.0% 671 0.0%

686 0.1% 672 0.0%

687 0.1% 672 0.1%

691 0.7% 687 2.3%

688 0.4% 679 1.1%

686 0.0% 671 0.0%

683 -0.4% 665 -1.0%

681 -0.7% 659 -1.9%

689 0.4% 673 0.3%

687 0.2% 672 0.1%

686 0.0% 671 0.0%

685 -0.2% 670 -0.1%

683 -0.4% 670 -0.3%

694 1.2% 695 3.5%

690 0.6% 683 1.7%

686 0.0% 671 0.0%

682 -0.6% 661 -1.5%

677 -1.3% 652 -2.9%

ing test. The 

l Notes, while data 

ator-freezers at three 

eratures. The 

atures are equal to 

atures for baseline 

or the baseline tests 

ost and icemaking 

nted by defrost for 

rature Changes
2 3

2012 Sample 1

2012 Sample 2

2011 Sample 3

2011 Sample 4

2 3

2012 Sample 1

2012 Sample 2

2011 Sample 3

2011 Sample 4

 H64
Baseline Test

Var 

Code

Comp 

Code

Fresh Food 

Temperature 

(°F)

Freezer 

Temperature 

(°F)

0 0 -2 37 0

0 0 -1 38 0

0 0 0 39 0

0 0 1 40 0

0 0 2 41 0

0 1 -2 39 -2

0 1 -1 39 -1

0 1 0 39 0

0 1 1 39 1

0 1 2 39 2

1 0 -2 39 0

1 0 -1 39 0

1 0 0 39 0

1 0 1 39 0

1 0 2 39 0

1 1 -2 39 0

1 1 -1 39 0

1 1 0 39 0

1 1 1 39 0

1 1 2 39 0

Fresh Food 

Variation

Freezer 

Variation

Nature of Variation

Location of 

Temperature 

Variation

Temperature 

Variation (°F)

Impact of variation in 

the baseline test 

temperature with no 

icemaking/baseline test 

temperature difference

Fresh Food 

Variation

Freezer 

Variation

Impact of temperature 

change between the 

icemaking and baseline 

tests

2012 Sample 1 1

Baseline 1

Index 0

Fresh Food 

Temperature 

(°F)

Freezer 

Temperature 

(°F)

Numerator Denominator Value

37 0 -49.67 -1.39 35.7 -0.8

38 0 -53.59 -1.48 36.3 -1.3

39 0 -58.69 -1.59 37.0 -1.7

40 0 -65.57 -1.74 37.7 -2.3

41 0 -75.40 -1.95 38.6 -2.9

39 -2 -72.36 -1.89 38.4 -2.7

39 -1 -65.52 -1.74 37.7 -2.3

39 0 -58.69 -1.59 37.0 -1.7

39 1 -51.85 -1.44 36.1 -1.1

39 2 -45.01 -1.29 35.0 -0.3

37 0 -58.69 -1.59 37.0 -1.7

38 0 -58.69 -1.59 37.0 -1.7

39 0 -58.69 -1.59 37.0 -1.7

40 0 -58.69 -1.59 37.0 -1.7

41 0 -58.69 -1.59 37.0 -1.7

39 -2 -58.69 -1.59 37.0 -1.7

39 -1 -58.69 -1.59 37.0 -1.7

39 0 -58.69 -1.59 37.0 -1.7

39 1 -58.69 -1.59 37.0 -1.7

39 2 -58.69 -1.59 37.0 -1.7

Icemaking Test T_A4, Baseline

T_B4

-10.0

-6.0

-2.0

2.0

6.0

10.0

30.0 40.0 50.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2011 Sample 1 - Baseline

1 to 2

2 to 3

3 to 1

T4 to Tx

2012 Sample 1 1

Icemaking 2

Index 3

Numerator Denominator Value

56.7 55.3 -50.47 -1.40 36.0 -0.8

56.9 54.9 -54.99 -1.50 36.6 -1.2

57.3 54.6 -60.95 -1.63 37.3 -1.7

57.6 54.2 -69.15 -1.82 38.1 -2.2

58.0 53.9 -81.13 -2.08 39.0 -2.8

57.9 56.9 -75.29 -1.95 38.6 -2.5

57.6 55.7 -68.12 -1.79 38.0 -2.1

57.3 54.6 -60.95 -1.63 37.3 -1.7

56.8 53.5 -53.78 -1.48 36.4 -1.1

56.3 52.3 -46.61 -1.32 35.4 -0.4

57.3 54.6 -50.47 -1.40 36.0 -0.8

57.3 54.6 -54.99 -1.50 36.6 -1.2

57.3 54.6 -60.95 -1.63 37.3 -1.7

57.3 54.6 -69.15 -1.82 38.1 -2.2

57.3 54.6 -81.13 -2.08 39.0 -2.8

57.3 54.6 -75.29 -1.95 38.6 -2.5

57.3 54.6 -68.12 -1.79 38.0 -2.1

57.3 54.6 -60.95 -1.63 37.3 -1.7

57.3 54.6 -53.78 -1.48 36.4 -1.1

57.3 54.6 -46.61 -1.32 35.4 -0.4

Baseline 

Average Power 

(PI1_x) (W)

T_A4, Icemaking

T_B4

Baseline 

Average Power 

(PI1_4) (W)

-10.0

-6.0

-2.0

2.0

6.0

10.0

30.0 40.0 50.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2011 Sample 1 - Icemaking

1 to 2

2 to 3

3 to 1

T4 to Tx

77.7 75.9 4.72E-05 4.58E-05 582.1

78.6 75.8 4.78E-05 4.57E-05 583.2

79.6 75.7 4.86E-05 4.57E-05 584.3

80.7 75.6 4.94E-05 4.56E-05 585.4

82.0 75.5 5.04E-05 4.55E-05 586.5

81.4 80.2 5.00E-05 4.90E-05 586.8

80.6 77.9 4.93E-05 4.74E-05 585.6

79.6 75.7 4.86E-05 4.57E-05 584.3

78.4 73.4 4.77E-05 4.40E-05 582.9

76.9 71.2 4.65E-05 4.23E-05 581.4

77.7 75.9 4.72E-05 4.58E-05 584.9

78.6 75.8 4.78E-05 4.57E-05 584.6

79.6 75.7 4.86E-05 4.57E-05 584.3

80.7 75.6 4.94E-05 4.56E-05 584.0

82.0 75.5 5.04E-05 4.55E-05 583.7

81.4 80.2 5.00E-05 4.90E-05 595.2

80.6 77.9 4.93E-05 4.74E-05 590.0

79.6 75.7 4.86E-05 4.57E-05 584.3

78.4 73.4 4.77E-05 4.40E-05 578.3

76.9 71.2 4.65E-05 4.23E-05 571.7

CompressorCycle-Based 

Average Power 

(PI3_x) (W)

Compressor-CycleBased Average 

Power (PI3_4) (W)

Ice Production 

Rate, Mdot_4 

(lb/s)

Ice Production 

Rate, Mdot_x 

(lb/s)

Energy Use with 

standard daily 

icemaking rate 

(kWh)

2012 Sample 2 2

Baseline 1

Index 6

Numerator Denominator Value

-0.38% -57.60 -1.56 36.9 -0.1 56.5

-0.19% -62.15 -1.67 37.3 -0.5 55.4

0.00% -68.81 -1.82 37.8 -1.0 54.1

0.19% -79.45 -2.07 38.5 -1.6 52.4

0.38% -99.20 -2.52 39.3 -2.5 50.1

0.43% -88.78 -2.28 38.9 -2.1 51.2

0.22% -78.80 -2.05 38.4 -1.6 52.5

0.00% -68.81 -1.82 37.8 -1.0 54.1

-0.24% -58.82 -1.59 37.0 -0.2 56.2

-0.49% -48.84 -1.36 35.9 0.9 59.0

0.10% -68.81 -1.82 37.8 -1.0 54.1

0.05% -68.81 -1.82 37.8 -1.0 54.1

0.00% -68.81 -1.82 37.8 -1.0 54.1

-0.05% -68.81 -1.82 37.8 -1.0 54.1

-0.10% -68.81 -1.82 37.8 -1.0 54.1

1.86% -68.81 -1.82 37.8 -1.0 54.1

0.96% -68.81 -1.82 37.8 -1.0 54.1

0.00% -68.81 -1.82 37.8 -1.0 54.1

-1.04% -68.81 -1.82 37.8 -1.0 54.1

-2.16% -68.81 -1.82 37.8 -1.0 54.1

T_B4

Baseline Average 

Power (PI1_4) (W)

T_A4, Baseline

Percent Change vs. 

Standard 

Temperatures

-4.0

-2.0

0.0

2.0

4.0

32.0 36.0 40.0 44.0 48.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2011 Sample 2 - Baseline

1 to 2

2 to 3

3 to 1

T4 to Tx

2012 Sample 2 2

Icemaking 2

Index 9

Numerator Denominator Value

56.2 -58.59 -1.60 36.7 -0.1

53.8 -62.67 -1.69 37.1 -0.5

51.4 -68.57 -1.82 37.6 -1.1

49.0 -77.82 -2.04 38.2 -1.7

46.5 -94.40 -2.42 39.0 -2.6

51.0 -87.83 -2.27 38.7 -2.3

51.2 -78.20 -2.05 38.2 -1.8

51.4 -68.57 -1.82 37.6 -1.1

51.6 -58.94 -1.60 36.8 -0.2

51.8 -49.31 -1.38 35.7 1.0

51.4 -58.59 -1.60 36.7 -0.1

51.4 -62.67 -1.69 37.1 -0.5

51.4 -68.57 -1.82 37.6 -1.1

51.4 -77.82 -2.04 38.2 -1.7

51.4 -94.40 -2.42 39.0 -2.6

51.4 -87.83 -2.27 38.7 -2.3

51.4 -78.20 -2.05 38.2 -1.8

51.4 -68.57 -1.82 37.6 -1.1

51.4 -58.94 -1.60 36.8 -0.2

51.4 -49.31 -1.38 35.7 1.0

Baseline Average 

Power (PI1_x) (W)

T_A4, Icemaking

T_B4

-4.0

-2.0

0.0

2.0

4.0

32.0 36.0 40.0 44.0 48.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2011 Sample 2 - Icemaking

1 to 2

2 to 3

3 to 1

T4 to Tx

62.2 61.5 1.40E-05 1.39E-05 539.2

61.1 58.8 1.44E-05 1.43E-05 535.0

59.9 56.2 1.50E-05 1.46E-05 530.9

58.2 53.6 1.58E-05 1.49E-05 527.1

55.9 51.0 1.68E-05 1.53E-05 523.4

56.7 56.1 1.64E-05 1.63E-05 527.4

58.1 56.1 1.58E-05 1.54E-05 529.1

59.9 56.2 1.50E-05 1.46E-05 530.9

62.1 56.3 1.40E-05 1.38E-05 533.0

65.0 56.4 1.27E-05 1.29E-05 535.4

62.2 61.5 1.40E-05 1.39E-05 602.6

61.1 58.8 1.44E-05 1.43E-05 565.9

59.9 56.2 1.50E-05 1.46E-05 530.9

58.2 53.6 1.58E-05 1.49E-05 497.5

55.9 51.0 1.68E-05 1.53E-05 465.5

56.7 56.1 1.64E-05 1.63E-05 523.1

58.1 56.1 1.58E-05 1.54E-05 526.8

59.9 56.2 1.50E-05 1.46E-05 530.9

62.1 56.3 1.40E-05 1.38E-05 535.6

65.0 56.4 1.27E-05 1.29E-05 540.8

Ice Production 

Rate, Mdot_x (lb/s)

Energy Use with 

standard daily 

icemaking rate 

(kWh)

Compressor-CycleBased Average 

Power (PI3_4) (W)

Compressor-CycleBased Average 

Power (PI3_x) (W)

Ice Production 

Rate, Mdot_4 (lb/s)

2011 Sample 3 3

Baseline 1

Index 12

Numerator Denominator Value

1.56% 90.77 2.55 35.7 4.1 61.4

0.76% 153.86 4.13 37.3 3.3 60.5

0.00% 354.09 9.14 38.7 2.6 59.7

-0.73% -4451.50 -111.24 40.0 1.9 58.9

-1.43% -357.85 -8.69 41.2 1.4 58.3

-0.67% 267.31 6.97 38.4 2.7 59.9

-0.35% 310.70 8.05 38.6 2.6 59.7

0.00% 354.09 9.14 38.7 2.6 59.7

0.39% 397.48 10.23 38.9 2.5 59.6

0.84% 440.87 11.32 39.0 2.4 59.5

13.50% 354.09 9.14 38.7 2.6 59.7

6.59% 354.09 9.14 38.7 2.6 59.7

0.00% 354.09 9.14 38.7 2.6 59.7

-6.30% 354.09 9.14 38.7 2.6 59.7

-12.32% 354.09 9.14 38.7 2.6 59.7

-1.48% 354.09 9.14 38.7 2.6 59.7

-0.78% 354.09 9.14 38.7 2.6 59.7

0.00% 354.09 9.14 38.7 2.6 59.7

0.88% 354.09 9.14 38.7 2.6 59.7

1.86% 354.09 9.14 38.7 2.6 59.7

Percent Change 

vs. Standard 

Temperatures

T_A4, Baseline

T_B4

Baseline 

Average Power 

(PI1_4) (W)

-10.0

-6.0

-2.0

2.0

6.0

10.0

30.0 40.0 50.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2012 Sample 1 - Baseline

1 to 2

2 to 3

3 to 1

T4 to Tx

2011 Sample 3 3

Icemaking 2

Index 15

Numerator Denominator Value

64.2 32.9 31.8 211.28 5.75 36.8

63.1 31.9 31.2 1010.67 26.62 38.0

62.0 30.9 30.6 -473.91 -12.14 39.0

61.0 30.1 29.9 -211.92 -5.30 40.0

59.9 29.3 29.3 -144.00 -3.53 40.8

64.1 31.2 30.4 -364.48 -9.29 39.2

63.1 31.0 30.5 -419.19 -10.72 39.1

62.0 30.9 30.6 -473.91 -12.14 39.0

61.0 30.8 30.6 -528.62 -13.57 38.9

60.0 30.8 30.7 -583.34 -15.00 38.9

62.0 30.9 30.6 211.28 5.75 36.8

62.0 30.9 30.6 1010.67 26.62 38.0

62.0 30.9 30.6 -473.91 -12.14 39.0

62.0 30.9 30.6 -211.92 -5.30 40.0

62.0 30.9 30.6 -144.00 -3.53 40.8

62.0 30.9 30.6 -364.48 -9.29 39.2

62.0 30.9 30.6 -419.19 -10.72 39.1

62.0 30.9 30.6 -473.91 -12.14 39.0

62.0 30.9 30.6 -528.62 -13.57 38.9

62.0 30.9 30.6 -583.34 -15.00 38.9

T_A4, Icemaking

Baseline 

Average Power 

(PI1_x) (W)

Baseline Defrost 

Energy Use 

Ed_4 (kWh)

Baseline Defrost 

Energy Use 

Ed_x (kWh)

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

2.0

30.0 40.0 50.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2012 Sample 1 - Icemaking

1.5 128.8 133.3 1.12E-04 1.13E-04 685.3

0.8 129.0 131.8 1.11E-04 1.12E-04 685.6

0.3 129.2 130.3 1.11E-04 1.11E-04 686.0

-0.2 129.4 128.7 1.10E-04 1.10E-04 686.4

-0.6 129.6 127.2 1.10E-04 1.09E-04 686.7

0.2 129.3 136.9 1.11E-04 1.14E-04 690.9

0.2 129.3 133.6 1.11E-04 1.12E-04 688.5

0.3 129.2 130.3 1.11E-04 1.11E-04 686.0

0.3 129.2 126.9 1.11E-04 1.10E-04 683.5

0.4 129.2 123.6 1.11E-04 1.09E-04 680.9

1.5 128.8 133.3 1.12E-04 1.13E-04 688.8

0.8 129.0 131.8 1.11E-04 1.12E-04 687.4

0.3 129.2 130.3 1.11E-04 1.11E-04 686.0

-0.2 129.4 128.7 1.10E-04 1.10E-04 684.6

-0.6 129.6 127.2 1.10E-04 1.09E-04 683.1

0.2 129.3 136.9 1.11E-04 1.14E-04 694.2

0.2 129.3 133.6 1.11E-04 1.12E-04 690.2

0.3 129.2 130.3 1.11E-04 1.11E-04 686.0

0.3 129.2 126.9 1.11E-04 1.10E-04 681.7

0.4 129.2 123.6 1.11E-04 1.09E-04 677.4

Ice Production 

Rate, Mdot_x 

(lb/s)

Energy Use with 

standard daily 

icemaking rate 

(kWh)

T_B4

Icemaker-CycleBased Average 

Power (PI2_4) 

(W)

Icemaker-CycleBased Average 

Power (PI2_x) 

(W)

Ice Production 

Rate, Mdot_4 

(lb/s)

cemaking

1 to 2

2 to 3

3 to 1

T4 to Tx

2011 Sample 4 4

Baseline 1

Index 18

Numerator Denominator Value

-0.10% -61.09 -1.56 39.2 1.2 63.8

-0.05% -59.05 -1.49 39.6 0.8 64.2

0.00% -57.45 -1.44 40.0 0.4 64.6

0.05% -56.17 -1.39 40.3 0.1 64.9

0.11% -55.12 -1.36 40.6 -0.2 65.1

0.71% -50.94 -1.22 41.8 -1.4 66.3

0.36% -54.19 -1.33 40.8 -0.4 65.4

0.00% -57.45 -1.44 40.0 0.4 64.6

-0.37% -60.71 -1.55 39.3 1.1 63.9

-0.74% -63.97 -1.66 38.6 1.8 63.3

0.40% -57.45 -1.44 40.0 0.4 64.6

0.20% -57.45 -1.44 40.0 0.4 64.6

0.00% -57.45 -1.44 40.0 0.4 64.6

-0.21% -57.45 -1.44 40.0 0.4 64.6

-0.42% -57.45 -1.44 40.0 0.4 64.6

1.20% -57.45 -1.44 40.0 0.4 64.6

0.61% -57.45 -1.44 40.0 0.4 64.6

0.00% -57.45 -1.44 40.0 0.4 64.6

-0.62% -57.45 -1.44 40.0 0.4 64.6

-1.26% -57.45 -1.44 40.0 0.4 64.6

Baseline Average 

Power (PI1_4) 

(W)

Percent Change 

vs. Standard 

Temperatures

T_A4, Baseline

T_B4

-6.0

-2.0

2.0

6.0

28.0 33.0 38.0 43.0 48.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2012 Sample 2 - Baseline

1 to 2

2 to 3

3 to 1

T4 to Tx

2011 Sample 4 4

Icemaking 2

Index 21

Numerator Denominator Value

66.7 22.1 21.9 -34.65 -0.87 39.6

66.2 22.1 22.0 -33.89 -0.85 39.9

65.7 22.2 22.1 -33.35 -0.83 40.0

65.2 22.2 22.2 -32.94 -0.82 40.2

64.7 22.2 22.3 -32.62 -0.81 40.3

68.6 22.4 22.2 -24.49 -0.55 44.2

67.1 22.3 22.1 -28.92 -0.69 41.7

65.7 22.2 22.1 -33.35 -0.83 40.0

64.2 22.1 22.1 -37.78 -0.97 38.9

62.7 22.0 22.0 -42.21 -1.11 38.0

65.7 22.2 22.1 -34.65 -0.87 39.6

65.7 22.2 22.1 -33.89 -0.85 39.9

65.7 22.2 22.1 -33.35 -0.83 40.0

65.7 22.2 22.1 -32.94 -0.82 40.2

65.7 22.2 22.1 -32.62 -0.81 40.3

65.7 22.2 22.1 -24.49 -0.55 44.2

65.7 22.2 22.1 -28.92 -0.69 41.7

65.7 22.2 22.1 -33.35 -0.83 40.0

65.7 22.2 22.1 -37.78 -0.97 38.9

65.7 22.2 22.1 -42.21 -1.11 38.0

Baseline Average 

Power (PI1_x) 

(W)

T_A4, Icemaking

Baseline Defrost 

Energy Use Ed_4 

(kWh)

Baseline Defrost 

Energy Use Ed_x 

(kWh)

-6.0

-2.0

2.0

6.0

28.0 33.0 38.0 43.0 48.0

Freezer Tem

perature (°F)

Fresh Food Temperature (°F)

2012 Sample 2 - Icemaking

0.4 95.0 97.0 7.70E-05 7.54E-05 670.9

0.2 95.3 96.7 7.64E-05 7.54E-05 671.2

0.1 95.6 96.3 7.60E-05 7.55E-05 671.4

0.0 95.8 95.9 7.56E-05 7.56E-05 671.6

-0.1 96.0 95.6 7.54E-05 7.57E-05 671.9

-2.9 102.6 102.0 6.49E-05 6.79E-05 687.1

-1.1 98.4 99.1 7.16E-05 7.17E-05 678.8

0.1 95.6 96.3 7.60E-05 7.55E-05 671.4

1.0 93.6 93.5 7.92E-05 7.93E-05 664.7

1.6 92.1 90.6 8.15E-05 8.31E-05 658.6

0.4 95.0 97.0 7.70E-05 7.54E-05 673.3

0.2 95.3 96.7 7.64E-05 7.54E-05 672.3

0.1 95.6 96.3 7.60E-05 7.55E-05 671.4

0.0 95.8 95.9 7.56E-05 7.56E-05 670.5

-0.1 96.0 95.6 7.54E-05 7.57E-05 669.5

-2.9 102.6 102.0 6.49E-05 6.79E-05 694.9

-1.1 98.4 99.1 7.16E-05 7.17E-05 682.5

0.1 95.6 96.3 7.60E-05 7.55E-05 671.4

1.0 93.6 93.5 7.92E-05 7.93E-05 661.3

1.6 92.1 90.6 8.15E-05 8.31E-05 652.2

T_B4

Icemaker-CycleBased Average 

Power (PI2_4) 

(W)

Icemaker-CycleBased Average 

Power (PI2_x) 

(W)

Ice Production 

Rate, Mdot_4 

(lb/s)

Ice Production 

Rate, Mdot_x 

(lb/s)

Energy Use with 

standard daily 

icemaking rate 

(kWh)

1 to 2

2 to 3

3 to 1

T4 to Tx

-0.07%

-0.04%

0.00%

0.04%

0.07%

2.34%

1.11%

0.00%

-1.00%

-1.91%

0.28%

0.14%

0.00%

-0.14%

-0.28%

3.51%

1.66%

0.00%

-1.50%

-2.86%

Percent Change 

vs. Standard 

Temperatures
Sample 

Number

Test

Temperature Setting 

(Fresh Food/Freezer)

Test Period Time, Baseline (TI1); 

Compressor-Cycle-Based (TI3) for 

cycling compressors; Icemaker-CycleBased (TI2) for non-cycling 

compressors (Seconds)

1 Mid/Mid 13721

2 Cold/Cold 15869

3 Warm/Cold 22506

4 Mid/Mid 69420

5 Warm/Warm 88885

6 Warm/Cold 49467

7 Mid/Mid 48495

8 Warm/Warm 26136

9 Cold/Mid 57498

10 Mid/Mid 55121

11 Warm/Warm 120895

12 Cold/Mid 119876

13 Mid/Mid 40145

14 Cold/Cold 89901

15 Cold/Warm 39733

16 Mid/Mid 13920

17 Cold/Cold 9906

18 Cold/Warm 11039

19 Mid/Mid 13497

20 Cold/Cold 13622

21 Warm/Cold 33243

22 Mid/Mid 41273

23 Cold/Cold 54928

24 Warm/Cold 48398

2012 Sample 

2 (NIST TN 

1759 Section 

4)

Baseline

Icemaking

2011 Sample 

3

(NIST TN 

1697 Section 

5)

2011 Sample 

4 

(NIST TN 

1697 Section 

6)

Baseline

Icemaking

Baseline

Icemaking

Parameter Abbreviations are as defined in the 

Refrigerator Test Procedure NOPR.

=Values in peach colored cells are as reported in 

the NIST Technical Notes.

=Values in cells with no color fill are calculated 

by workbook

2012 Sample 

1 (NIST TN 

1759 Section 

3)

Baseline

Icemaking

Fresh Food 

Temperature 

(°C)

Freezer 

Temperature 

(°C)

Test Energy, Baseline (EPI1); 

Compressor-Cycle-Based (EPI3) for 

cycling compressors; IcemakerCycle-Based (EPI2) for non-cycling 

compressors (kWh)

Average 

Wattage, (PI1, 

PI2, or PI3) 

(W)

2.3 -18.4 0.2167 -

7.6 -14.6 0.2019 -

7.5 -22.2 0.3833 -

2.2 -18.2 1.4989 77.7

7.4 -14.4 1.5150 61.4

7.7 -21.9 1.2587 91.3

3.4 -18.5 0.7173 53.3

6.3 -15.8 0.3017 41.6

2.0 -17.1 0.9556 59.8

3.5 -18.8 0.8866 57.9

6.4 -15.9 1.4978 44.6

2.2 -17.4 2.1391 64.2

6.9 -17.9 0.6292 56.4

4.4 -22.7 1.7564 70.3

2.4 -15.7 0.6735 61.000

6.2 -18.8 0.5030 130.1

3.5 -22.3 0.4360 158.5

2.9 -17.1 0.3952 128.9

3.7 -16.8 0.2372 63.3

-1.2 -20.0 0.2877 76.0

7.2 -20.3 0.6404 69.4

3.2 -16.8 1.0520 91.8

-0.1 -18.2 1.5419 101.1

5.4 -18.4 1.3241 98.5

Calculated Average 

Wattage, Baseline 

(PI1) or Icemaking 

(PI2 or PI3) (W)

Avg Energy per Ice 

Produced 

(EPI2/(Mice_cyc*Ncy

c)) (kWh/kg)

Avg Ice 

Production 

Rate (kg/hr)

Calculated 

Avg Ice 

Production 

Rate (kg/hr)

Defrost 

Energy Use 

(kWh/yr)

56.9 - - - Not

45.8 - - - Measured

61.3 - - -

77.7 1.007 0.0772 0.0772 -

61.4 1.076 0.0571 0.0570 -

91.6 0.967 0.0944 0.0944 -

53.2 - - - Not

41.6 - - - Measured

59.8 - - -

57.9 2.225 0.0260 0.0260 -

44.6 2.050 0.0218 0.0218 -

64.2 3.014 0.0213 0.0213 -

56.4 - - - 27.2

70.3 - - - 29.3

61.0 - - - 32.5

130.1 - 0.1785 - -

158.4 - 0.1999 - -

128.9 - 0.1826 - -

63.3 - - - 22.0

76.0 - - - 21.5

69.4 - - - 22.8

91.8 - 0.1344 - -

101.1 - 0.1180 - -

98.5 - 0.1169 - -

Fresh Food 

Temperature 

(°F)

Freezer 

Temperature 

(°F)

Ice Production Rate (PI3 x 

Mice_cyc x Ncyc/EPI2) 

(lb/s)

AEU Based on 

Single Test, Not 

Including Defrost 

(kWh)

36.1 -1.1 - 498

45.7 5.7 - 401

45.5 -8.0 - 537

36.0 -0.8 4.72E-05 681

45.3 6.1 3.49E-05 538

45.9 -7.4 5.77E-05 802

38.1 -1.3 - 466

43.3 3.6 - 364

35.6 1.2 - 524

38.3 -1.8 1.59E-05 507

43.5 3.4 1.33E-05 391

36.0 0.7 1.30E-05 563

44.4 -0.2 - 494

39.9 -8.9 - 616

36.3 3.7 - 535

43.2 -1.8 1.09E-04 1140

38.3 -8.1 1.22E-04 1388

37.2 1.2 1.12E-04 1129

38.7 1.8 - 554

29.8 -4.0 - 666

45.0 -4.5 - 608

37.8 1.8 8.21E-05 804

31.8 -0.8 7.21E-05 885

41.7 -1.1 7.14E-05 863
Average
Defrost Energy Percent of 

Energy not including 

defrost and icemaking

-

-

-

-

-

-

-

-

-

-

-

-

5.5%

4.8%

6.1%

-

-

-

4.0%

3.2%

3.8%

-

-

-
4.5%
Standardized Freezer Temperature 0

Standardized Fresh Food Temperature 39

Daily Ice Production 1.8