Question

Consider a power plant operating on a Rankine cycle using steam as the
working fluid. The boiler pressure is 2.8 MPa and the steam leaving the boiler is
superheated to a temperature 110 0C above its saturation temperature. The condenser
temperature is 49 0C. Condenser discharges saturates liquid. The efficiency of the
turbine is 0.90 and of the pump 0.8 as compared to reversible and adiabatic
machines operating at the same pressure ranges.
a) Sketch the cycle on a T-S diagram
b) Calculate the thermal efficiency of the cycle
c) Calculate the thermal efficiency of a
Carnot cycle receiving heat at the saturation temperature of steam at 2.8 MPa and
discarding it at 490C.

Answer 1