Which of the following correctly identifies the four main components of a vapor-compression system and their primary roles?

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Multiple Choice

Which of the following correctly identifies the four main components of a vapor-compression system and their primary roles?

The four main components and their roles in a vapor‑compression system are evaporator, compressor, condenser, and expansion device. The evaporator absorbs heat from the space being cooled, causing the refrigerant to vaporize. The compressor then raises the refrigerant’s pressure (and its temperature), moving it through the system. The condenser rejects that heat to the outside environment and causes the refrigerant to condense from a high‑pressure vapor into a high‑pressure liquid. Finally, the expansion device drops the refrigerant’s pressure, producing a low‑pressure mixture that returns to the evaporator to repeat the cycle. This description matches the standard sequence and functions of a vapor‑compression cycle. The other descriptions mix up these roles: the evaporator does not store refrigerant, and the expansion device does not release heat or filter refrigerant; the condenser’s job is to reject heat (not cool air or heat water); the compressor’s job is to raise pressure and temperature, not merely cool.

The four main components and their roles in a vapor‑compression system are evaporator, compressor, condenser, and expansion device. The evaporator absorbs heat from the space being cooled, causing the refrigerant to vaporize. The compressor then raises the refrigerant’s pressure (and its temperature), moving it through the system. The condenser rejects that heat to the outside environment and causes the refrigerant to condense from a high‑pressure vapor into a high‑pressure liquid. Finally, the expansion device drops the refrigerant’s pressure, producing a low‑pressure mixture that returns to the evaporator to repeat the cycle.

This description matches the standard sequence and functions of a vapor‑compression cycle. The other descriptions mix up these roles: the evaporator does not store refrigerant, and the expansion device does not release heat or filter refrigerant; the condenser’s job is to reject heat (not cool air or heat water); the compressor’s job is to raise pressure and temperature, not merely cool.

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