Which of the following is NOT a major component of a vapor compression refrigeration system?

• A. Compressor
• B. Evaporator
• C. Heat Exchanger
• D. Metering Device

Answer: (C)

The main idea is identifying the four devices that drive a vapor compression cycle: the compressor, condenser, metering device, and evaporator. These are the essential parts that compress, condense, throttle, and evaporate the refrigerant to move heat from the space to be cooled to the outside environment.

A heat exchanger isn’t a separate major component in this context because the heat transfer happens within the condenser and the evaporator, and those two components themselves are the heat exchangers. In other words, the condenser and evaporator perform the heat exchange functions needed by the cycle, so listing a general “heat exchanger” as a distinct major part isn’t describing an individual component in the system.