What is the purpose of an evaporator fan in commercial refrigeration?

The purpose of an evaporator fan in commercial refrigeration is to circulate air over the evaporator coils, which promotes efficient heat exchange. This process is critical because the evaporator coils are where the refrigerant absorbs heat from the inside of the refrigeration unit, effectively lowering the temperature of the space being cooled. By moving air over these coils, the fan ensures that the heat absorbed by the refrigerant is exchanged effectively, allowing for a steady and reliable cooling operation.

The circulation of air not only helps maintain the desired temperature but also aids in preventing ice buildup on the coils by keeping the air flowing. This is essential for the system's efficiency and longevity, as proper heat exchange directly impacts the unit's ability to maintain the desired cooling levels while preventing overworking and potential damage to other components.