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← ScienceWhich outcome occurs when the compression ratio exceeds design limits in a gas-powered refrigeration cycle?
A)Decreased coefficient of performance occurs✓
B)Increased evaporator superheat occurs
C)Refrigerant subcooling will greatly reduce
D)Expansion valve modulates erratically
💡 Explanation
Decreased coefficient of performance happens because when the compression ratio greatly increases, the discharge temperature significantly rises, greatly reducing overall efficiency due to higher work input per unit of cooling; therefore COP drops sharply as compared to superheat, rather than other operational instability.
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