solution

An ideal Rankine cycle with reheat uses water as the working fluid. The conditions at the inlet to the first-stage turbine are p1 2500 lbf/in.2 , T1 1000F. The steam is reheated at constant pressure p between the turbine stages to 1000F. The condenser pressure is 1 lbf/in.2

(a) If p p1 0.2, determine the cycle thermal efficiency and the steam quality at the exit of the second-stage turbine.

(b) Plot the quantities of part (a) versus the pressure ratio p p1 ranging from 0.05 to 1.0.

An ideal Rankine cycle with reheat uses water as the working fluid. The conditions at the inlet to the first-stage turbine are 14 MPa, 600C and the steam is reheated between the turbine stages to 600C. For a condenser pressure of 6 kPa, plot the cycle thermal efficiency versus reheat pressure for pressures ranging from 2 to 12 MPa.