What phenomenon may occur due to the sudden shutting of the discharge valve of a centrifugal pump?

What phenomenon may occur due to the sudden shutting of the discharge valve of a centrifugal pump?

• A. Water hammer will occur
• B. Pressure surges will stabilize
• C. Flow rates will increase
• D. Vibration dampening will improve

Answer: (A)

The phenomenon that occurs due to the sudden shutting of the discharge valve of a centrifugal pump is known as water hammer. This occurs because the rapid closure of the valve creates a sudden change in the flow of water within the pipeline, resulting in a pressure wave that travels back through the system. When the flow is abruptly stopped, the kinetic energy of the moving fluid has to go somewhere, leading to a significant increase in pressure, which can manifest as a shock wave. This can cause loud banging noises, vibrations, and even mechanical damage to the pump and piping system if not properly managed. Understanding water hammer is crucial in the design and operation of pumping systems, as it highlights the need for appropriate controls, such as slow-closing valves or surge tanks, to mitigate the effects of such pressure fluctuations.

The phenomenon that occurs due to the sudden shutting of the discharge valve of a centrifugal pump is known as water hammer. This occurs because the rapid closure of the valve creates a sudden change in the flow of water within the pipeline, resulting in a pressure wave that travels back through the system.

When the flow is abruptly stopped, the kinetic energy of the moving fluid has to go somewhere, leading to a significant increase in pressure, which can manifest as a shock wave. This can cause loud banging noises, vibrations, and even mechanical damage to the pump and piping system if not properly managed.

Understanding water hammer is crucial in the design and operation of pumping systems, as it highlights the need for appropriate controls, such as slow-closing valves or surge tanks, to mitigate the effects of such pressure fluctuations.