Consider 4.8 pounds per minute of water vapor at 100 lbf/in2, 500oF, and a velocity of 100 ft/s entering a nozzle operating at steady state and expanding adiabatically to the exit, where the pressure is 40 lbf/in2. The isentropic nozzle efficiency is 90.0%.   Determine the velocity of the steam at the exit, in ft/s, and the rate of entropy production, in Btu/min·oR.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Consider 4.8 pounds per minute of water vapor at 100 lbf/in2, 500oF, and a velocity of 100 ft/s entering a nozzle operating at steady state and expanding adiabatically to the exit, where the pressure is 40 lbf/in2. The isentropic nozzle efficiency is 90.0%.  

Determine the velocity of the steam at the exit, in ft/s, and the rate of entropy production, in Btu/min·oR.

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