What is in the evaporator?
Strictly speaking: The evaporator is not working! Just some pipes, liquid refrigerant is converted into gas here. In physics, this conversion process is called “evaporation”, so it is called evaporator.
Evaporator is the vaporization of compressed, liquefied refrigerant, from liquid to gas, while absorbing heat, the role is to reduce the temperature of the surrounding medium, play a role in refrigeration.