Two open reservoirs are connected by three galvanized iron pipes in series: L1=300m,D1=200mm; L2=400m, D2=300mm; L3=1200m,...

Question

Question

Two open reservoirs are connected by three galvanized iron pipes in series:

L1=300m,D1=200mm; L2=400m, D2=300mm; L3=1200m, D3=450 mm. If the

flow is 400 m3/h of water (μ=1 cP,ρ= 1000 kg/m3), determine the difference in

elevation of the reservoirs. Neglect any minor friction losses.

Answer 1

Answer #1

Energy equation is applied.

The roughness factor of Galvanized iron pipe is obtained from Standard table.

Volumetric flow rate=constant

Since diameter of pipe is different in 3 pipes , velocity will change therefore, velocity is replaced by volumetric flow rate.

Friction factor is obtained from Moody's chart using Reynolds number and relative roughness factor.

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Answer 2

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