Confused about the Refrigerator Parts-Here is a Clear Explanation

What is a refrigerator made of?
Here are the major components of a refrigerator:

Compressor

Heat-exchanging Pipes

Expansion Valve

Refrigerant

Confusing! What are those parts?

A Compressor is a mechanical device used to compress or compact something. In the case of the refrigerator it is the refrigerant.

The Heat-exchanging pipes are the coiled set of pipes inside and outside the refrigerator. You can usually see this by looking on the back of the fridge.

The expansion valve allows the refrigerant to change its pressure by expanding a small pipe into a big one.

The refrigerant the liquid that evaporates inside the refrigerator to create the cold temperatures. This liquid in the past was ammonia or a chlorofluorocarbons (CFCs).

Ammonia is used because of its extremely low boiling rate. It boils at -27 degrees Fahrenheit or -32 degrees Celsius.

Now days ammonia is no longer used because it stinks, and CFCs are no longer used because of ozone depletion. CFCs have been banned from use by the Kyoto protocol. 134A is now used in most fridges today.