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← ScienceWhich outcome occurs within a geothermal power plant's turbine when the working fluid has incomplete isobaric phase change?
A)Reduced overall cycle thermal efficiency✓
B)Increased turbine blade fatigue rate
C)Elevated risk of stator winding arcing
D)Depleted available pressure head
💡 Explanation
Reduced cycle efficiency results because using wet steam forces the isentropic enthalpy change on the turbine outlet fluid in the Rankine thermodynamic cycle to deviate from theoretical limits; therefore the Carnot efficiency decreases rather than only pressure or component lifecycle limitations alone, assuming a given heat input.
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