Which of the following components is responsible for turning vapor into liquid?

The component responsible for turning vapor into liquid is the condenser. In a refrigeration cycle, the condenser plays a crucial role by accepting vapor refrigerant that has been heated through the evaporation process. When this vapor passes through the condenser, it releases heat to its surroundings, often aided by a cooling medium such as air or water. As the vapor loses heat, it undergoes a phase change from gas to liquid, thereby condensing the refrigerant. This liquid refrigerant is then routed to the expansion device to continue the cycle.

In the context of refrigeration and air conditioning systems, understanding the function of each component is essential. The evaporator, for instance, is the component where the refrigerant absorbs heat and evaporates, which is the opposite process. The expansive device reduces the pressure of the liquid refrigerant, enabling it to evaporate again in the evaporator. The compressor, on the other hand, is responsible for compressing the vapor refrigerant and increasing its pressure before it enters the condenser. Hence, the correct identification of the condenser's role in the cycle highlights its importance in cooling processes and its function in transforming vapor into liquid.