Consider a Carnot cycle which uses steam as the working fluid. Steam enters the turbine at 3.0086 MPa and is condensed in the condenser at a pressure of 81.46 kPa.

If the isentropic efficiency of the turbine is 90%, draw the cycle on a 7-s diagram and determine the:

1. Enthalpy and entropy at each state of the cycle.
2. Heat added to the system.
3. Work output from the turbine.
4. Work input by the pump.
5. Maximum possible and actual thermal efficiencies of this cycle.