Pumps Flashcards
1
Q
(Volume flow rate)
V.
A
V. = A • V
where: A = π/4(D^2) cross sectional
are
V = Velocity of flow
TDH = Vd²/2g
2
Q
Total Dynamic Head (TDH)
A
Hs + Hp + Hv + Hf
3
Q
Pressure Head (Hp)
A
( Pd - Ps / Y )
Where Y: Unit weight water= 9810N/m^3
4
Q
Velocity Head (Hv)
A
Vd^2 - Vs^2 / 2g
5
Q
Friction Head (Hf)
A
FlV^2/2gD
Where: F = Friction coefficient
D = Pipe Diameter
L = Length of pipe
6
Q
Water Power/ Hydraulic (WP)
A
WP = Y V. TDH
7
Q
Pump Efficiency (ep)
A
WP/BP
8
Q
Motor Efficiency (em)
A
BP/IP
9
Q
Overall efficiency (eo)
A
WP/IP
