In a refrigeration system, the purpose of the evaporator is to:

The purpose of the evaporator in a refrigeration system is to remove heat from the environment. In the evaporator, the refrigerant absorbs heat from the surrounding area as it changes from a liquid to a vapor state. This heat exchange is crucial because it effectively lowers the temperature of the environment being cooled. The evaporator establishes a cold surface that removes heat from the air or liquid that passes over it, thereby keeping the desired area cool.

By absorbing heat, the refrigerant evaporates, which is a vital part of the refrigeration cycle. This process contributes to the overall efficiency and effectiveness of the refrigeration system by ensuring that the heat is continuously extracted and carried away by the refrigerant to be expelled in another part of the system, specifically in the condenser.