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

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

• A. Compressor
• B. Condenser
• C. Evaporator
• D. Metering device

Answer: (B)

Heat rejection to the surroundings happens on the high-pressure side of the cycle, in the condenser. After the refrigerant leaves the compressor, it’s a hot, high-pressure vapor that needs to dump its heat. In the condenser, this heat is transferred to the outside environment (air or water), causing the refrigerant to lose energy and change into a liquid. The evaporator, by contrast, is where heat is absorbed from the cooled space, turning the liquid back into a low-pressure vapor. The metering device just lowers the pressure before the evaporator, facilitating evaporation, while the compressor provides the pressure increase that drives the cycle. So, the component that rejects heat to the surroundings is the condenser.

Heat rejection to the surroundings happens on the high-pressure side of the cycle, in the condenser. After the refrigerant leaves the compressor, it’s a hot, high-pressure vapor that needs to dump its heat. In the condenser, this heat is transferred to the outside environment (air or water), causing the refrigerant to lose energy and change into a liquid. The evaporator, by contrast, is where heat is absorbed from the cooled space, turning the liquid back into a low-pressure vapor. The metering device just lowers the pressure before the evaporator, facilitating evaporation, while the compressor provides the pressure increase that drives the cycle. So, the component that rejects heat to the surroundings is the condenser.