Question

When is heat exchanged during the refrigeration cycle?
During the initial condensation and final expansion of the refrigerant.
During the initial expansion and final condensation of the refrigerant.
During the pumping of hot air into the expansion valve.
During compression and heating of the refrigerant into a super hot vapor.

Answer 1

The vapor compression refrigeration cycle is a common method for transferring heat from a low temperature to a high temperature. The above figure shows the objectives of refrigerators and heat pumps. The purpose of a refrigerator is the removal of heat, called the cooling load, from a low-temperature medium.