Steam at 4 MPa and 4008C enters a nozzle steadily with a

Chapter 5, Problem 538

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QUESTION:

Steam at 4 MPa and 4008C enters a nozzle steadily with a velocity of 60 m/s, and it leaves at 2 MPa and 3008C. The inlet area of the nozzle is 50 cm2 , and heat is being lost at a rate of 75 kJ/s. Determine (a) the mass flow rate of the steam, (b) the exit velocity of the steam, and (c) the exit area of the nozzle.

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QUESTION:

Steam at 4 MPa and 4008C enters a nozzle steadily with a velocity of 60 m/s, and it leaves at 2 MPa and 3008C. The inlet area of the nozzle is 50 cm2 , and heat is being lost at a rate of 75 kJ/s. Determine (a) the mass flow rate of the steam, (b) the exit velocity of the steam, and (c) the exit area of the nozzle.

ANSWER:

Step 1 of 6

Steam is accelerated in a nozzle from a velocity of . The mass flow rate, the exit velocity, and the exit area of the nozzle are to be determined.

Assumptions are  

1. This is a steady-flow process since there is no change with time.

2. Potential energy changes are negligible.

3. There are no work interactions.

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