Which inefficiency in a Rankine cycle causes reduced turbine power output when steam pressure fluctuates?

A)Valve timing lag increasing throttling losses

B)Droplet formation damaging turbine blades✓

C)Condenser vacuum variation reducing heat transfer

D)Feedwater heater instability diminishing preheating

💡 Explanation

When steam pressure fluctuates, rapid expansion causes increased droplet formation because mixture quality declines, producing liquid water in the turbine which erodes blading, thus reducing power output and efficiency. Therefore, erosion results, rather than purely timing/throttling, heat transfer or feedwater inefficiencies although such losses may also occur.

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Which inefficiency in a Rankine cycle causes reduced turbine power output when steam pressure fluctuates?

💡 Explanation

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