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In a chiller system, which malfunction increases when liquid refrigerant floods back toward the compressor through the evaporator?

A)Compressor lubrication oil washout
B)Evaporator coil freeze blockage
C)Expansion valve thermal contraction
D)Refrigerant subcooling inefficiency increase

💡 Explanation

Compressor oil washout increases because liquid refrigerant arriving at the compressor causes the oil to dilute via a solvent action, a state of high miscibility, resulting in reduced lubrication; therefore, oil starvation occurs, rather than evaporator freezing which requires different conditions.

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