11 Due 2/25

1. An adiabatic turbine receives steam from two boilers. One boiler provides 10 kg/s at 5 MPa, 600$\POW9,{\circ}$C and the other provides 20 kg/s at 800 kPa, 500$\POW9,{\circ}$C. The steam exits the turbine at a pressure of 100 kPa, with a quality of 90%. Find the final temperature and the produced power.

2. A turbine takes in 2 kg/s neon at 27$\POW9,{\circ}$C and 200 kPa with negligible velocity. The produced work is 75 kW and 30 kW of heat leaks into the turbine from the surroundings. The neon exits at 100 kPa and 230 K. Find the exit velocity of the neon.

3. Engine coolant (glycerine) enters the radiator of your car with a temperature of 100$\POW9,{\circ}$C and exits it at 50$\POW9,{\circ}$C. If the coolant must remove 30 kW of heat, what must be its mass flow rate through the radiator? If the heat is carried off by ambient air at about one atmosphere that has a temperature of 15 degrees before flowing through the radiator and 35 degrees after it, what is the volume flow of the air?

4. An adiabatic mixing chamber takes in two streams of water both at the ambient pressure of 100 kPa. On stream is 2 kg/s water at 50$\POW9,{\circ}$C, and the other is water at 200$\POW9,{\circ}$C. Pressure losses in the mixing chamber can be ignored, and the water comes out as saturated liquid. What is the mass flow rate of the incoming stream at 200$\POW9,{\circ}$C? Construct all phases that are not given in a $Pv$ diagram. Label the lines with their values. .