What happens in the evaporator during normal operation?

During normal operation of an evaporator, the primary function is to absorb heat from the environment, which causes the refrigerant within to evaporate. This process transforms the refrigerant from a liquid state into a vapor state. As heat is absorbed, the temperature of the surrounding air or fluid decreases, creating a cooling effect. This is essential in refrigeration systems, where the goal is to remove heat from a given space or substance.

The function of the evaporator is crucial for the overall effectiveness of the refrigeration cycle. When the liquid refrigerant enters the evaporator, it absorbs heat and thus undergoes a phase change, becoming a vapor. This vapor then flows to the compressor, where it is pressurized before repeating the cycle. The operational efficiency relies on this phase change occurring smoothly and effectively within the evaporator.