1.Steam expands in an turbine operating in steady-state conditions with a mass flow rate of 40,000 kg/hr. The steam enters the turbine at 8 MPa and 500 C, and exits as a saturated vapor at 40 kPa. If the power generated by the turbine is 8.2 MW, what is the rate of entropy generation, assuming the surrounds are at 25 C?
2.A sealed insulated room contains 90 m^3 air at 12 C and 100 kPa. A container with 45 kg of water at 95 C is placed in the room. After heat transfer between the air and water, thermal equilibrium is reached. Assume constant specific heats at 300 K and no chane in the room air pressure. Calculate: a. The final temperature of the air and water. b. The amount of heat transferred from the water to the air. c. The entropy generated.