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Polar Freeze Retention Times

 

Polar Freeze-Retention Times

 

Ice Cream Test

Product: PB 27
Test Specifications:
Interior Capacity Size: 27 Cubic Feet
Dry Ice Use: None
Product Used: Ice Cream
Capacity: Full
Container put on non-insulated, non-refrigerated trailer in hot sun at 11:00 am, ambient
temperature 880 Fahrenheit. Note: Unit pre-coiled in -180 freezer.

                        
                                                                       

Time

Elapsed
Time

Ambient
Temperature

Temperature
Interior
Container

Ice Cream
Product
Composition

11:00 am

Start

88o

-18o

Hard

5:00 pm

6 hours

84o

-8o

Hard

5:45 pm

6 hrs. 45 min.

85o

-8o

Hard

6:30 pm

7 hrs. 30 min.

80o

-5o

Firm

8:00 pm

9 hours

70o

-4o

Firm

9:00 pm

10 hours

70o

-4o

Firm

10:00 pm

11 hours

70o

-4o

Firm

11:00 pm

12 hours

70o

-2o

Firm

12:00 am

13 hours

68o

0o

Firm

                                                                        
                                                                       

Upright Container Testing

Product: PB 55
Frozen Foods Used for Test
CO2 bunker charged with approximately 80 lbs. of snow
Probe 1: Product temperature at bottom
Probe 2: Product temperature at 36"
Probe 3: Product temperature at 48"
Probe 4: Product temperature at top air space

                                                                       

Elapsed
Time

Probe
#

Product
Temperature (oF)

6 hours

1

-31.9o

2

-5o

3

-23.7o

4

-34.1o

12 hours

1

-16.1o

2

-3.1o

3

-12.9o

4

-12.9o

18 hours

1

-3.1o

2

-4.8o

3

-0.4o

4

8.4o

24 hours

1

8.0o

2

-1.2o

3

17.7o

4

30.9o

                                                                        
                                                                       

Estimated Frozen Times

                                               

Product:
PB 27

Non-Frozen Container
No Dry Ice
No Cooled Truck

Non-Frozen Container
Dry ice
No Cooled Truck

Non-Frozen Container
No Dry Ice
Cooled Truck

Ice Cream

1-2 hours

4-6 hours

6-8 hours

Frozen Food

2-4 hours

4-6 hours

6-8 hours

                                                
                                                                                               

Product:
PB 27

Frozen Container
No Dry Ice
No Cooled Truck

Frozen Container
Dry ice
No Cooled Truck

Frozen Container
No Dry Ice
Cooled Truck

 Ice Cream 2-4 hours 8-10 hours 12-24 hours
Frozen Food  4-6 hours 10-12 hours 12-24 hours
                                                                       
 
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