A steam turbine receives 600 kg/h of steam at 25 bar, 350°C. At a certain stage of the turbine, steam at the rate of 150 kg/h is extracted at 3 bar, 200°C. The remaining steam leaves the turbine at 0.2 bar, 0.92 dry. During the expansion process, there is heat transfer from the turbine to the surroundings at the rate of 10 kJ/s. Evaluate per kg of steam entering the turbine (a) the availabil- ity of steam entering and leaving the turbine, (b) the maximum work, and (c) the irreversibility. The atmosphere is at 30°C. A large insulated vessel is divided into two chambers, one con- taining 5 kg of dry saturated steam at 0.2 MPa and the other 10 kg of steam, 0.8 quality at 0.5 MPa. If the partition between the chambers is removed and the steam is mixed thoroughly and allowed to settle, find the final pressure, steam quality, and entropy change in the process.