a. For a pressure of 7 bar right after the first stage turbine in the ideal Rankine cycle, create

two plots: thermal efficiency as a function of the reheat temperature from 200 °C to

500 °C; and the net work, heat addition, and heat extraction on the same graph as a function of the reheat temperature from 200 °C to 500 °C.

b. Is there a maximum or minimum thermal efficiency for 200 °C < T reheat < 500 °C? If so,

what is it, at what reheat temperature does it occur, and how does one determine such an

efficiency?