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Question
What is the efficiency of an ideal regenerative Rankine cycle power plant using saturated steam at 327°C and pressure 135 bar at the inlet to the turbine, and condensing temperature of 27°C (corresponding saturation pressure of 3.6 kPa)?
A.
93%
B.
33%
C.
50%
D.
42%
Answer ( Option C)

50%

Solution

The efficiency of ideal regenerative cycle is equal to that of Carnot cycle working between same temperature limits.

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