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← ScienceWhich efficiency loss results when a Stirling engine cycle operates far from isothermal conditions?
A)Reduced heat exchanger effectiveness
B)Increased regenerative heat loss
C)Irreversible gas compression heating✓
D)Elevated mechanical friction losses
💡 Explanation
Compression heating introduces irreversibility leading to wasted work input because deviation from isothermal operation causes *non-equilibrium heat transfer*. Consequently, the cycle's efficiency decreases, rather than being primarily limited by exchanger effectiveness; those losses are secondary.
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