Consider a simple ideal Rankine cycle with fixed boiler and condenser pressures.

Question

Consider a simple ideal Rankine cycle with fixed boiler and condenser pressures. What is the effect of superheating the steam to a higher temperature on:

Pump Work Input: (a) increases (b) decreases (c) remains the same
Turbine Work Output: (a) increases (b) decreases (c) remains the same
Heat Supplied: (a) increases (b) decreases (c) remains the same
Heat Rejected: (a) increases (b) decreases (c) remains the same
Cycle Efficiency: (a) increases (b) decreases (c) remains the same
Moisture Content at Turbine Exit: (a) increases (b) decreases (c) remains the same

Explanation / Answer

Pump work input: (c) remains the same Turbine work output: (a) increases Heat supplied: (a) increases Heat rejected: (a) increases Cycle efficiency: (a) increases Moisture content at turbine exit: (b) decreases

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