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Assignment 경제적인 파이프
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Assignment 경제적인 파이프.hwp
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41 Kbyte
]
Assignment 경제적인 파이프.hwp
[Size :
41 Kbyte
]
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Assignment경제적인파이프
본문/내용
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 로 놓고 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
∴
[Step 4] EQ % valve sizing
From Valve Performance Eq.
∴
[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
▶
A Glove vavle is used
At given conditions : water at 61℉
normal 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 로 놓고 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
∴
[Step 4] EQ % valve sizing
From Valve Performance Eq.
∴
[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
▶
A Glove vavle is used
At given conditions : water at 61℉
normal flow rate :
,
…
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I D : dmsg******* Date : 2011-11-13 FileNo : 16098475 |
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