Which component in a refrigeration cycle is responsible for releasing heat to the surroundings?

Which component in a refrigeration cycle is responsible for releasing heat to the surroundings?

• A. Evaporator
• B. Condenser
• C. Compressor
• D. Expansion valve

Answer: (B)

Heat rejection happens in the condenser. After the refrigerant leaves the compressor, it’s hot and high‑pressure in vapor form. As it passes through the condenser coils, a cooling medium (air or water) removes that heat. The refrigerant releases heat to the surroundings and changes to a high‑pressure liquid. This step is what allows the cycle to transfer heat from the inside to the outside. In contrast, the evaporator is where heat is absorbed from the space, the expansion valve drops pressure to enable evaporation, and the compressor adds energy to drive the cycle.

Heat rejection happens in the condenser. After the refrigerant leaves the compressor, it’s hot and high‑pressure in vapor form. As it passes through the condenser coils, a cooling medium (air or water) removes that heat. The refrigerant releases heat to the surroundings and changes to a high‑pressure liquid. This step is what allows the cycle to transfer heat from the inside to the outside. In contrast, the evaporator is where heat is absorbed from the space, the expansion valve drops pressure to enable evaporation, and the compressor adds energy to drive the cycle.