Which process occurs in the evaporator coil?

The process that occurs in the evaporator coil is the evaporation of refrigerant. In the context of refrigeration cycles, the evaporator is designed to absorb heat from the environment, usually from the refrigerated space. As the refrigerant enters the evaporator coil, it is in a low-pressure, low-temperature state and is typically in a liquid form.

When the refrigerant passes through the evaporator coil, it absorbs heat from the surrounding area, which causes it to transition from a liquid state to a gaseous state. This phase change is critical because it enables the refrigeration system to remove heat from the space being cooled, effectively maintaining the desired temperature.

The process of evaporation is essential for the refrigeration cycle to function efficiently, as it allows the refrigerant to carry away the heat energy and facilitate the cycle's continuation. Thus, the correct understanding of what happens in the evaporator coil is central to comprehending how refrigeration systems operate.