In a vapor-compression refrigeration circuit the term condensable is used to describe;

In a vapor-compression refrigeration circuit the term condensable is used to describe;

• A. A gas that will condense to a liquid
• B. Any gas that will condense to a liquid
• C. Any gas that will not condense to a liquid
• D. A gas that is already a liquid at room temperature

Answer: (C)

The key idea is that condensable refers to a substance that can change from a vapor to a liquid in the condenser stage of a vapor‑compression cycle. In operation, the refrigerant is a vapor that is compressed to a high pressure and then rejected heat in the condenser until it becomes a liquid. That phase change is what makes the cycle work, so condensable means a gas that will condense to a liquid under the system’s conditions. Gases that do not condense (non-condensables) don’t fit this concept, and a substance that is already a liquid at room temperature isn’t described as condensable in the cycle context.

The key idea is that condensable refers to a substance that can change from a vapor to a liquid in the condenser stage of a vapor‑compression cycle. In operation, the refrigerant is a vapor that is compressed to a high pressure and then rejected heat in the condenser until it becomes a liquid. That phase change is what makes the cycle work, so condensable means a gas that will condense to a liquid under the system’s conditions. Gases that do not condense (non-condensables) don’t fit this concept, and a substance that is already a liquid at room temperature isn’t described as condensable in the cycle context.