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← ScienceWhich efficiency decrease results when a gas turbine cycle experiences turbine blade fouling?
A)Increased frictional power loss✓
B)Enhanced boundary layer separation
C)Improved combustion process efficiency
D)Reduced intercooler thermal resistance
💡 Explanation
Fouling increases surface roughness, thus the increased friction dissipates more energy. With increased frictional power loss, the net work output from the turbine decreases, therefore the thermal efficiency is reduced because less energy goes into motive power, rather than heat.
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