The total length of pipe in the three inch branch is 20 ft, and the length of pipe in the one inch branch is 6 ft. Brine (sg=1.04, m=10-3 Pa*s) flows at 250gpm through the entrance at point A. Assume fully turbulent flow in both branches (f=ft). Pipes are standard Schedule 40 steel pipes. Assume the globe valve is partially shut so its equivalent L/D is 1000. determine  The flow rate in both branches The pressure drop in both branches The overall resistance coefficient

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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  • The total length of pipe in the three inch branch is 20 ft, and the length of pipe in the one inch branch is 6 ft.
  • Brine (sg=1.04, m=10-3 Pa*s) flows at 250gpm through the entrance at point A.
  • Assume fully turbulent flow in both branches (f=ft).
  • Pipes are standard Schedule 40 steel pipes.
  • Assume the globe valve is partially shut so its equivalent L/D is 1000.

determine 

  1. The flow rate in both branches
  2. The pressure drop in both branches
  3. The overall resistance coefficient
 
Governing equations:
Q = QA +QB
Q = AAVA + ABVB
hLA = hLB = KA [(VA)²] = KB [VB)²
КА
[22²]
2g
2g
Ap = y [hLB]
Ktotal
12/1
[2hLA g
(vin)²
Transcribed Image Text:Governing equations: Q = QA +QB Q = AAVA + ABVB hLA = hLB = KA [(VA)²] = KB [VB)² КА [22²] 2g 2g Ap = y [hLB] Ktotal 12/1 [2hLA g (vin)²
3-in
er
A
Gate
valve
Heat exchanger
K = 12
Globe
valve
Gate
valve
1-in-
3-in-
Transcribed Image Text:3-in er A Gate valve Heat exchanger K = 12 Globe valve Gate valve 1-in- 3-in-
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