Refrigerator

A refrigerator (often shortened to fridge) or freezer is an electrical appliance that uses refrigeration to help preserve food. A domestic refrigerator is present in 99.5% of American homes. It works using phase change heat pumps operating in a refrigeration cycle. An industrial refrigerator or industrial freezer is simply a refrigerator used in an industrial setting, usually in a restaurant or supermarket.

Related Topics:
Appliance - Refrigeration - Food - Phase change heat pump - Refrigeration cycle - Industrial - Restaurant - Supermarket

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They may consist of either a cooling compartment only (a larger refrigerator) or a freezing compartment only (a freezer) or contain both. The dual compartment was introduced commercially by General Electric in 1939. Some refrigerators are now divided into four zones for the storage of

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different types of food:

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• -18 °C (0 °F) (freezer)
• 0 °C (32 °F) (meats)
• 4 °C (40 °F) (refrigerator)
• 10 °C (50 °F) (vegetables), for the storage of different food types.

The capacity of the refrigerator (freezer and/or fridge) is measured in litres (or cubic feet). Typically the freezer volume is 100 litres (this will vary) and the fridge 140 litres.

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Refrigerator: Types ►