What happens to vapor when it condenses in a refrigeration system?

When vapor condenses in a refrigeration system, it rejects heat to the surrounding environment. This process occurs in the condenser, where the refrigerant vapor releases heat as it converts into a liquid state. The temperature of the refrigerant drops during this phase change, which is crucial for the refrigeration cycle to facilitate the transfer of heat from an area being cooled to the outside environment.

This heat rejection is a fundamental aspect of how a refrigeration system operates, as it allows the refrigerant to move from a gaseous state, where it has absorbed heat, to a liquid state, significantly reducing its ability to hold thermal energy. Consequently, this heat rejection is essential for maintaining the efficiency and effectiveness of the cooling process.