When you plug in your fridge, the electricity energises the freon in the copper piping, which then spreads all over the fridge cooling it down. The biggest pipes are at the top, which pushes cold air...
Freon is run through copper tubing in a refrigerator chilling the air inside the insulated box that makes up a refrigerator The temperature drops, chilling anything inside.
Refrigerators keep their interiors cool by transferring heat out of the interior of the system to the outside. In reality the total system (the inside of the refrigerator and the room it's in) winds...