Definition and Function of a Refrigerator
– A refrigerator is a machine used for keeping things cold.
– It is sometimes called a fridge or an icebox.
– It is normally maintained at 4-5 degrees Celsius for household use.
– People put food and drinks in it to keep them cold or unspoiled for a longer time.
– A refrigerator has a heat pump that takes heat away from the air inside and moves it to the air outside.
Ice Boxes
– Ice boxes are available and do not use electricity.
– They are filled with ice to provide colder temperatures.
– Ice can keep things cold until it melts.
– Ice boxes are often taken on camping trips and are sometimes called coolers.
– Refrigerator-sized ice boxes were used before electricity was available.
Modern Refrigerators
– Most modern refrigerators come in a variety of colors, with white being the most common.
– Smaller versions of refrigerators are used in hotels and college dorm rooms.
– These refrigerators have similar functions but are designed for smaller spaces.
– They are mainly used for storing food and drinks.
– Modern refrigerators are driven by an electric motor.
Freezer
– A freezer is a special type of refrigerator that stores food at freezing temperatures.
– Inside a freezer, it is normally -18 degrees Celsius.
– Freezers can be found in household refrigerators, as well as in industry and commerce.
– Frozen food can be safely stored for a longer time in a freezer.
– Some freezers can achieve temperatures as low as -34 degrees Celsius.
Types of Freezers
– Domestic freezers can be a separate compartment in a refrigerator or a separate appliance.
– Most household freezers maintain temperatures from -23 to -18 degrees Celsius.
– Some freezer-only units can achieve temperatures lower than -34 degrees Celsius.
– Commercial freezers often have glass doors for shoppers to see the contents.
– Modern upright freezers may come with an ice dispenser built into the door.Sources: https://simple.wikipedia.org/wiki/Freezer
