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centrifugal pump design - Coggle Diagram
centrifugal pump design
Select pump model
chart 9-5
Know
Head
flow rate
hs (vacum hight)
pump model
efficiency ,Ns
chart 9-6
Head per stage, number of stage
n=H/hstage
below 6 stage
if was above 6 stage
Back chart 9-6
Chose low efficiency ,Ns
Find new Head stage
n=H/Hstage new
Head stage
Chart 9-7
calculate power (rpm,watt..)
Ns=(N*Q^1/2)/H^(3/4)
Find N as rpm
N=60f/p
f=Fercuency
P=polarity even
from N choice sutible electro motor
N*%3.33
Calculet watt
W=(rho
Q
g*H)/effiniecy
turn to hp
1kw=1.34hp
Impeler design
Chart 9-8
D20/D1
D2m/D1
K2m
K1m
KuD2
Kum
Out three diagonal
u2
D2
b2
B2'=1.1B2
vt2
Hist=Hst/efficiency
Hest=Hi st/miu
miu =0.9
Vt2'=miu vt2
Vt2=He st .g/u2
V2
input three diagoanl
u1
D1
b1
B1
B1'=1.1B1
Number of blade
Z=(2pi sin(B1'+B2'))/C ln(D2/D1)
Characteristic of the shell
Chart 9-9
alfa
((D3-D2)/D2)*100
calculate
D3
V3
Vn3
bv