What does the term 'evaporator' refer to in refrigeration systems?

The term 'evaporator' in refrigeration systems specifically refers to the component where the liquid refrigerant absorbs heat from the surroundings. As the refrigerant passes through the evaporator coil, it undergoes a phase change from a liquid to a gas. This process is critical for cooling, as the absorption of heat lowers the temperature of the air or fluid passing over the coil, effectively transferring that heat to the refrigerant.

During this phase change, the evaporation process is what enables the refrigeration cycle to function efficiently. The refrigerant, now in gas form, then moves to the compressor where it will be pressurized and sent to the condenser, completing the refrigeration loop. This highlights the role of the evaporator as a key component in the heat absorption process of the system.