# Question 6.P.11: The flow of water through a 50 mm pipe is measured by means ...

The flow of water through a 50 mm pipe is measured by means of an orifice meter with a 40 mm aperture. The pressure drop recorded is 150 mm on a mercury-underwater manometer and the coefficient of discharge of the meter is 0.6. What is the Reynolds number in the pipe and what would the pressure drop over a 30 m length of the pipe be expected to be? Friction factor, $\phi=R / \rho u^2=0.0025$. Density of mercury = 13,600 kg/m³. Viscosity of water = 1 mN s/m².
What type of pump would be used, how would it be driven and what material of construction would be suitable?

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Question: 6.P.26

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Question: 6.P.23

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Question: 6.P.20

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