Question

19. A long pipe is conveying air at a pressure and temperature of 150 kPa and 100°C, respectively, at a velocity of 160 m/s. Valves are fitted at both the inlet and the exit to the pipe. Discuss what waves will be developed and what pressure will act on the valve if (1) the inlet valve is suddenly closed and (2) the exit valve is suddenly closed.

          19. A long pipe is conveying air at a pressure and temperature of 150 kPa and 100°C,
respectively, at a velocity of 160 m/s. Valves are fitted at both the inlet and the exit
to the pipe. Discuss what waves will be developed and what pressure will act on
the valve if (1) the inlet valve is suddenly closed and (2) the exit valve is suddenly
closed.

19. A long pipe is conveying air at a pressure and temperature of 150 kPa and 100°C,
respectively, at a velocity of 160 m/s. Valves are fitted at both the inlet and the exit
to the pipe. Discuss what waves will be developed and what pressure will act on
the valve if (1) the inlet valve is suddenly closed and (2) the exit valve is suddenly
closed.

Added by Sara P.

Thermodynamics: An Engineering Approach

Yunus A. Cengel, Michael A. Boles 9th Edition

Chapter 5

Instant Answer

Solved by Expert Aman Kumar

Step 1

This will create a pressure wave that will travel back towards the inlet valve. This pressure wave is known as a "water hammer" or "pressure surge" and can cause significant damage to the pipe and valves if not properly controlled. The pressure wave will Show more…

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A long pipe is conveying air at a pressure and temperature of 150 kPa and 100Â°C respectively, at a velocity of 160 m/s. Valves are fitted at both the inlet and the exit of the pipe. Discuss what waves will be developed and what pressure will act on the valve if (1) the inlet valve is suddenly closed and (2) the exit valve is suddenly closed. 10 Initial flow HCUREP7.1 Pressure variation considered