Assignment 寃쎌�������� �����댄��

Flow rate,
Assume, turbulent flow.
��� turbulent flow.
[ Step 2 ] Determine the maximum flow rate
[ Step 3 ] Determine the total friction loss, in the pipe & fittings
Pump outlet : point 1, overhead tank inlet : point 2 濡� ���怨� Bernoulli Eq.
linear velocity,
( assuming )
Average velocity =
Equivalent roughness, = 0.00015 ft ( from textbook p 482 )
��� Friction factor = f = 0.0045 ( from Fig. 14-1 )
Total Le for fittings & valves
Le =
Friction due to flow through pipe & all fittings
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[ Step 4 ] EQ % valve sizing
From Valve Performance Eq.
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[ Step 5 ] Pump selection
Total Head at normal flow rate, from the pump performance chart,
Check :
So the recommended pump : 68.5% efficiency, 28HP , 8` pump
[ Step 6 ] Resizing of Pipe
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A Glove vavle is used
At given conditions : water at 61���
normal flow r���(������)