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  2. Water hammer - Wikipedia

    en.wikipedia.org/wiki/Water_hammer

    Effect of a pressure surge on a float gauge. Hydraulic shock (colloquial: water hammer; fluid hammer) is a pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly: a momentum change. It is usually observed in a liquid but gases can also be affected.

  3. Surge control - Wikipedia

    en.wikipedia.org/wiki/Surge_control

    Surge control products have been used in many industries to protect the maximum working pressure of hydraulic system for decades. Typical applications for surge relief equipment is in pipelines at pump stations, receiving manifolds at storage facilities, back pressure control, marine loading/off loading, site specific applications where pressure surges are generated by the automation system ...

  4. Surge in compressors - Wikipedia

    en.wikipedia.org/wiki/Surge_in_compressors

    This adverse pressure gradient naturally decelerates flows in the whole system and reduces the mass flow rate. The slope of a constant speed line near surge line is usually zero or even positive, which implies that the compressor cannot provide a much higher pressure as lowering the mass flow rate.

  5. So, You Have a Water Stain on Your Ceiling—Here's What a ...

    www.aol.com/water-stain-ceiling-heres-plumber...

    A water ring on your ceiling is a sign of a leak. We asked expert plumbers how to identify the source of the leak and solve the problem. ... a water monitor and sensor which can run a pressure ...

  6. Wikipedia:Reference desk/Archives/Science/2011 February 23 ...

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    A spring attached to a ceiling has mass of 500 g suspended from it such that the spring stretches 4.0 cm. Calculate the spring constant. I have taken two approaches to this question, but they seem to yield different answers! The first, dynamic approach: kx = mg k = mg / x = 0.5*9.8/0.04 = 122.5 N/m The second, energy approach: ½kx² = mgx

  7. Water flow test - Wikipedia

    en.wikipedia.org/wiki/Water_flow_test

    First, a static pressure gauge is attached to the test hydrant and the static water pressure is measured at the test hydrant. Second, the flow hydrant opened to allow water to flow in a fully open condition. Simultaneously the pitot tube pressure is recorded from the flow hydrant while the residual pressure is measured from the test hydrant.

  8. Atmospheric vacuum breaker - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_vacuum_breaker

    It is usually constructed of brass and resembles a 90-degree elbow with a hood on its top to allow air to enter the water system if a siphon attempts to form. Inside this elbow is a poppet valve that is held "up" by the water pressure found in the system, closing the air entrance to the device. If the pressure in the "upstream side" is reduced ...

  9. Axial fan design - Wikipedia

    en.wikipedia.org/wiki/Axial_fan_design

    The pressure fluctuations are observed at low discharges and at flow rates(as indicated by the point "S" ) the pressure deceases. The pressure variations to the left of the point "S" causes for unsteady flow which are due to the two effects of Stalling and surging.