The condenser rejects heat equal to the evaporator heat plus the heat of compression. Which two contributions make up the total heat rejected by the condenser?

• A. Heat picked up in the Evaporator and the Heat of Compression
• B. Heat Absorbed by the Condenser
• C. Heat Added from Surroundings
• D. Heat of Vaporization Only

Answer: (A)

In a vapor‑compression cycle, the condenser has to reject all the heat that the refrigerant has picked up plus the energy added to it by the compressor. The heat absorbed in the evaporator is the heat taken from the refrigerated space, and the compressor adds work to the refrigerant, which shows up as additional heat that must be rejected. So the total heat rejected by the condenser equals the evaporator heat plus the heat of compression.

That’s why the two contributions are the heat absorbed in the evaporator and the heat of compression. The condenser does not “absorb” heat, and the heat of vaporization alone misses the work input from the compressor.