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← ScienceWhich consequence results when exceeding compressor's pressure ratio limit in a two-stage Carnot heat pump?
A)Reduced coefficient of performance✓
B)Increased network power draw
C)Early refrigerant thermal breakdown
D)Ideal gas law deviation increases
💡 Explanation
Carnot efficiency is highest when pressure ratio isn't exceeded; efficiency drops when it does because of irreversibilities introduced during the compression stage. Therefore the coefficient of performance is reduced, rather than being more effective, since more energy is lost by friction and heat.
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