ThermorevsteamQ - Problem Set: Thermodynamics Review Steam...

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Center for Advanced Energy Systems Michael R. Muller, Director 640 Bartholomew Road, Piscataway NJ 08854 (732) 445-3655 FAX: (732) 445-0730 Problem Set: Thermodynamics Review – Steam 1. An adiabatic piston-cylinder system contains a 1000-W immersion heater and 4 kg of H 2 0 initially at 1 atm and 96 percent quality. The heater is operated for 7 min., during which the pressure is held constant. Find the final volume of the system. 2. Steam flows through a small steam turbine at the rate of 10,000 kg/h, entering at 600 0 C and 2.0 MPa and emerging at 0.01 MPa with 4 percent moisture. The flow enters at 50 m/s at a point 2 m above the discharge and leaves at 80 m/s. Compute the shaft-power output, assuming that the device is adiabatic but considering kinetic and potential energies. How much error would be made were these secondary terms neglected? What are the areas of the inlet and discharge pipes? 3.
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