Engineering, 22.03.2021 18:30 brazilmade1

Air with a mass flow rate of 2 kg/s enters a horizontal nozzle operating at steady state at 450K, 350 kPa, and velocity of 3 m/s. At the exit, the temperature is 300 K and the velocity is 460 m/s. Assume air is an ideal gas. (a) Draw a schematic and list all assumptions. (b) Identify if you want to treat air to have a constant specific heat or variable specific heat. Calculate the change in specific enthalpy of air (in kJ/kg) between the nozzle outlet and the inlet based on your assumption. (c) Determine the rate of heat transfer between the nozzle at its surroundings (in kJ/s). Specify whether the heat transfer is to or from the air.

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Air with a mass flow rate of 2 kg/s enters a horizontal nozzle operating at steady state at 450K, 35...

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