What is the purpose of an evaporator in a refrigeration system?

The function of an evaporator in a refrigeration system is critical for the cooling process. It operates by absorbing heat from the environment, which in turn cools the air or liquid that flows over or through the evaporator coil. As the refrigerant within the evaporator coil evaporates, it changes from a low-pressure liquid to a low-pressure gas, facilitating this heat absorption. This process is essential for achieving the desired cooling effect in refrigerators, air conditioning units, and other cooling systems.

The ability of the evaporator to absorb heat effectively enables the overall refrigeration cycle to function efficiently. The removal of heat from the air or liquid cools the space or substance being conditioned, which is the primary goal of any refrigeration system. This process is central to maintaining comfortable indoor environments or preserving perishable goods.