Which part of the refrigeration cycle involves the refrigeration liquid returning to its gaseous state?

The part of the refrigeration cycle where the refrigeration liquid returns to its gaseous state is known as evaporation. During this process, the refrigerant absorbs heat from the environment, which causes it to change from a liquid to a gas. This phase is crucial in maintaining the cooling effect in refrigeration systems. When the refrigerant evaporates, it takes heat away from the area being cooled, thereby lowering the temperature of that environment.

In contrast, condensation refers to the process where the gas refrigerant releases heat and changes back into a liquid. Compression is the stage where the gaseous refrigerant is compressed, raising its pressure and temperature, while transpiration is not a standard term used in the context of the refrigeration cycle. Understanding these terms helps clarify the functions and processes within refrigeration systems, emphasizing the importance of evaporation in the overall cycle.