2.1. A water hammer is a phenomenon caused by the sudden increase or decrease in fluid velocity which results in pressure fluctuations in a pipe. A common cause of the water hammer is rapid closure of a valve in a pipeline. In order to minimise the pressure rise, the closure time of the valve needs to be increased. If a pipe (K = 18.9 x 105 kPa) is laid for a distance of 1500 m, which of the following would be considered a gradual valve closure time? (a) 1.3 seconds (b) 5 seconds (c) 2.18 seconds (d) All of the above 2.2. hich of the following is considered a minor friction loss in pipe system? (a) Slight changes in elevation (b) Shock losses due to a pipe contraction (c) Head loss due to pipe friction (d) Head loss when the fluid passes through a valve

2.1. A water hammer is a phenomenon caused by the sudden increase or decrease in fluid velocity which results in pressure fluctuations in a pipe. A common cause of the water hammer is rapid closure of a valve in a pipeline. In order to minimise the pressure rise, the closure time of the valve needs to be increased. If a pipe (K = 18.9 x 105 kPa) is laid for a distance of 1500 m, which of the following would be considered a gradual valve closure time? (a) 1.3 seconds (b) 5 seconds (c) 2.18 seconds (d) All of the above 2.2. hich of the following is considered a minor friction loss in pipe system? (a) Slight changes in elevation (b) Shock losses due to a pipe contraction (c) Head loss due to pipe friction (d) Head loss when the fluid passes through a valve

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Description: QUESTION 22.1. A water hammer is a phenomenon caused by the sudden increase or decreasein fluid velocity which results in pressure fluctuations in a pipe.A common cause of the water hammer is rapid closure of a valve in apipeline. In order to minimis

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.1DP

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