This question is about fluid mechanics.
A submersible pump is used to pump water at flow Q from the well in depth h in the figure. The pipe length is L and the pipe diameter is D.
a) Calculate the required pump power.
b) If the pump efficiency is 0.75, how much electricity does the pump draw?
Express in terms of h, Q, L, D.
Note: pWater = 1000 kg/m^3, u = 1x10^-3 kg/ms
pipe surface roughness E = 0.0015x10^-3 m
Local loss coefficients K1 inlet: 2; K2 elbow: 0.9
K3 supplement: 1.3, K4 Valve = 5, K5 outlet: 0.5
K3 ek boglanti KZ.dirsek
K4:vana K5:cik
Boru capi D Boru uzunlugu L
giris
Dalgic pompa
Elektrik motoru