Rankine Cycle: Example Problems

Try to solve these problems before watching the solutions in the screencasts.

Example Problem 1

Steam generated at a power plant at 8.0 MPa and 500.°C is fed to a turbine. Exhaust from the turbine enters a condenser at 15 kPa where it is condensed to a saturated liquid, which is then pumped to the boiler. What is the thermal efficiency of a Rankine cycle with a reversible adiabatic turbine operating at these conditions?

Example Problem 2

Calculate the heat transfer or the work for each step of a Rankine cycle. Also calculate the thermodynamic efficiency of the cycle. The boiler operates at 19.8 bar and superheats the steam to 500°C. The condenser operates at 0.10 bar and the turbine is adiabatic and reversible.