تم الحل ✓
categoryهندسة ميكانيكية
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
Water, p=1000 kg/m³ and v = 1.02 ×106 m²/s, is pumped between two
reservoirs at 0.0508 m³/s through 122 m of 5.08 cm diameter pipe and
several minor losses, as shown. The roughness ratio is ε/d = 0.001.
Compute the pump power required. Take the following minor losses
Loss element
Ki
Sharp entrance
0.5
Open globe valve
6.9
bend, R/D = 2
0.15
Threaded, 90P, reg.,
0.95
elbow
Gate valve, 1/2
2.7
closed
sharp exit
1
Z₁=6 m
Sharp
entrance
Screwed
regular
90° elbow
bend radius
Pump
Open globe
valve
122 m of pipe, d=5.08 cm
Sharp
exit
2 Z₂-36 m
Half-open
gate valve
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