How does the refrigerator keep cold ?

How does the refrigerator keep cold ? 

The refrigerator does not produce 'cold', it removes heat. Liquid refrigerant' is circulated in the refrigerator, which becomes gaseous when passing through pipes. When this liquid become gaseous, it absorbs heat. And that helps in keeping the food items cold. 

The compressor is the "heart" of a refrigerator. ... The evaporator is located inside a refrigerator and is the part that makes the items in the refrigerator cold. As the refrigerant turns from a liquid into a gas through evaporation, it cools the area around it, producing the proper environment for storing food.

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