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# HW7 - MEEN 315-501 Fall 2010 Problem Set 07 Not Due for...

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1 MEEN 315-501 Fall 2010 Problem Set 07 Not Due for credit. Please make sure to work all problems and have a good working understanding of them. 1. Air enters an adiabatic nozzle steadily at 300 kPa, 200ºC, and 45 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 110 cm 2 . Determine (a) the mass flow rate through the nozzle (b) the exit temperature of the air (c) the exit area of the nozzle. 2. Steam enters a nozzle at 400 ºC and 800 kPa with a velocity of 10 m/s, and leaves at 300 ºC and 200 kPa while losing heat at a rate of 25 kW. For an inlet area of 800 cm 2 , determine the velocity and the volume flow rate of the stream at the nozzle exit. 3. Nitrogen gas at 60 kPa and 7 ºC enters an adiabatic diffuser steadily with a velocity of 275 m/s and leaves at 85 kPa and 27 ºC. Determine (a) the exit velocity of the nitrogen (b) the ratio of the inlet to exit area A 1 /A 2 .

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2 4. Will the temperature of air rise as it is compressed by an adiabatic compressor? Why?
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HW7 - MEEN 315-501 Fall 2010 Problem Set 07 Not Due for...

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