Difference Between Direct Cool Refrigerators and Frost Free Refrigerators

Direct cool refrigerators use the method of natural convection for cooling while frost-free refrigerators use convention or indirect cooling for supplying cold air to the compartments.

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Direct Cool Refrigerators vs Frost Free Refrigerators

The difference between direct cool refrigerators and frost-free refrigerators is that direct cool refrigerators require regular manual de-icing whereas in frost-free refrigerators it is done automatically. The frost-free refrigerators are costlier compared to the direct cool ones although the price gap is declining.

Direct Cool Refrigerators vs Frost Free Refrigerators

The life expectancy of direct refrigerators is much lesser than the frost-free ones. They have a lesser life expectancy than frost-free refrigerators but are preferred more for industrial use.

Frost-free refrigerators use a different technique for passing cold air into all the compartments which are known as indirect cooling or convention.

Comparison Table

Parameters of ComparisonDirect Cool RefrigeratorsFrost Free Refrigerators
Price
Direct Cool Refrigerators are comparatively cheaper than Frost-free refrigerators.
Frost-free refrigerators are expensive when compared to direct cool refrigerators. Although with days the price gap is reducing.
Efficiency
They are more efficient compared to frost-free refrigerators.
They are less efficient compared to direct cool refrigerators.
Temperature Maintenance
Direct cool refrigerators are a little less efficient in temperature maintenance compared to Frost-free refrigerators.
Frost-free refrigerators maintain the temperature more consistently and thus help by keeping the foods fresher for a longer time.
De-icing
Direct cool refrigerators require manual de-icing.
Frost-free refrigerators do not require any sort of manual de-icing. It is done automatically.
Life expectancy
Lesser compared to frost-free refrigerators.
More compared to frost-free refrigerators.

What is Direct Cool Refrigerators?

A Direct cool refrigerator uses the method of natural convection for instant cooling. The cooling effect is produced from cooled surfaces in the compartment which is insulated and being cooled. When water vapor comes in contact with the cooled surfaces it freezes.

Direct cool refrigerators are effective in keeping the food fresh but only for a very short period. Direct cool refrigerators are cheaper compared to frost-free refrigerators and also are cheaper in terms of maintenance expenses since it consumes lesser power.

What is Frost Free Refrigerators?

Frost-free refrigerators use the technique of indirect cooling which is also known as a convention for cooling the different compartments of the refrigerator. The cooling coils mainly remain hidden in these types of refrigerators and an electric fan constantly supplies cold air into the compartments. .

Unlike the direct cool ones, they do not require manual defrosting the de-icing is performed by a technology known as auto-defrosting. These refrigerators come with a thermostat and hence the temperature can be controlled as well as monitored.

Main Differences Between Direct Cool Refrigerators and Frost Free Refrigerators

  1. Direct cool refrigerators use the method of natural convection for instant cooling whereas frost-free refrigerators use convention or indirect cooling for supplying cold air to all the compartments.
  2. Direct cool refrigerators use a lesser amount of electricity compared to frost-free zones.
Difference Between Direct Cool Refrigerators and Frost Free Refrigerators

References

  1. https://docs.lib.purdue.edu/iracc/1162/
  2. https://www.sciencedirect.com/science/article/abs/pii/S0140700720303844
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