A small fan in the refrigerator box will improve box temperature True or False?
 

This is a 24-hour performance comparison between a no fan and a circulating fan in a full-refrigerated box.

 

 

 

Circulating Fan versus no Fan

 

 

 

 

 

 

 

 

 

 

TEST

Fan in Box

Hours Compressor

Total AMP=Hrs

Cycle

Box Temp High

Box temp

 

 

Run

 

 

High

Low

 

 

 

 

 

 

 

119

No Fan

11

55

94

43.7

42.5

 

 

 

 

 

 

 

120

Fan in Box

10.4

62.2

96

35.6

34.7

The Thermostat was locked and outside air temperature maintained between 79 to 82 degrees F. for this test.

In test 119 the food product block the transfer of heat. In test 120 the small airflow from a one-inch muffin fan tumbling the air lowered the temperature eight degrees.

The fan increased the efficiency of the evaporator and increased the output  from the compressor.

 Without the air movement in a refrigerator or freezer temperatures tend to stratify in layers. Most commercial refrigerators are constructed to allow the natural movement of warm air rising and cold air descending across the evaporator to tumble the air. The addition of a small fan can help most refrigerated boxes

 

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