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A steam turbine operates at steady state with a steam mass flow rate of 4600 kg/h, producing a power output of 1000 kW. At the inlet, the pressure is 60 bar, the temperature is 400oC, and the velocity is 10 m/s. At the exit, the pressure is 0.1 bar, the quality is 0.9 (90%), and the velocity is 50 m/s. Calculate the rate of heat transfer between the turbine and surroundings, in kW.
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Using the ideal gas model with specific heat ratio, k = 1.4, and ignoring potential energy effects, determine (a) the exit velocity, in m/s, and (b) the rate of heat transfer, in kJ per kg of gas flowing through the nozzle.
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a piston-cylinder device contains 1 kg of h2o. the water is at 800oc and a pressure of 20 mpa. heat transfer occurs
a well-insulated rigid tank of volume 10 m3 is connected by a valve to a supply line carrying air at 227oc and 10 bar.
for the ideal air standard diesel cycle with a volumetric compression ratio of 17 1 calculate the efficiencies for
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