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← ScienceWhich outcome results when supercritical CO2 fluid cycles rapidly within a heat engine?
A)Reduction in isentropic turbine efficiency✓
B)Enhanced convective heat transfer rate
C)Isothermal expansion approaches equilibrium
D)Increased sensitivity to back pressure
💡 Explanation
The rapid cycling stresses the system thermally; cavitation and non-ideal gas behavior cause inefficiency. Therefore, the isentropic turbine efficiency will reduce because these irreversible thermodynamic factors degrade performance rather than help it perform ideally.
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