Which statement about a liquid receiver is correct?

• A. It removes moisture from refrigerant.
• B. It acts as a filter.
• C. It serves as the compressor.
• D. It stores liquid refrigerant and is permanently connected to the system by inlet and outlet pipes.

Answer: (D)

The essential idea is that a liquid receiver functions as a storage vessel for liquid refrigerant in the high-pressure portion of the system. It holds the liquid refrigerant after it leaves the condenser and before it reaches the metering device, providing a reserve that helps maintain a steady supply when loading varies. Because it is a storage tank with fixed inlet and outlet connections, it remains permanently connected to the system by those pipes.

This role is different from moisture removal or filtration, which are handled by other components (a drier removes moisture, and filters clean the refrigerant). It also isn’t the compressor, which is the moving machine that raises refrigerant pressure. So the liquid receiver’s purpose is to store liquid refrigerant and stay permanently connected via its inlet and outlet pipes.