The cycle efficiency is nearest:
The problems in this mini-exam pertain to the simple Rankine cycle shown. The various variations to this cycle depend
primarily on the temperature and pressure leaving the boiler and the pressure leaving the turbine. The mass flow rate is
20 kg/s.
A) 37%
B) 39%
C) 41%
D) 43%
C) 41%
The enthalpy at the inlet to the boiler is the same as the enthalpy at the exit to the condenser, i.e., h2 ? h1, since we neglect the relatively small amount the pump contributes. The efficiency of this ideal cycle is, using the turbine power from Problem 2,
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