What is your best estimate for the discharge temperature
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Calculate the heat transfer to the tank and show that this process does not violate the second law.
Air flows into an insulated nozzle at 1 MPa, 1200 K with 15 m/s and a mass flow rate of 2 kg/s. Find the exit velocity and the nozzle efficiency.
The inlet temperature is 1000 K and it exhausts to the atmosphere. Find the required inlet pressure and the exhaust temperature.
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A centrifugal compressor takes in ambient air at 100 kPa, 17oC and discharges it at 450 kPa. What is your best estimate for the discharge temperature?
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What nozzle inlet pressure and temperature are required, assuming the inlet kinetic energy is negligible?
The heat exchanger is very long, so the two flows exit at the same temperature. Find the exit temperature by trial and error.
Indicate why comparing firms for postretirement benefits other than pensions can be difficult.
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