Suction Dia

D=Q>2/min 90 Q (/min)

D=Q<2/min 100 Q (/min)

(1) (̷е) WATER HORSE POWER

WHP = 0.163 rQH (kw)

WHP = 0.222 rQH (HP)

(2) ൿ BRAKE HORSE POWER

BHP = 0.163 rQH/nP = whp/np

                   *  MOTOR (a)

¹(Kw) (a)
0~0.75Kw 0.3
19Kw 0.25
22~55Kw 0.15
55Kw ̻ 0.10

(3) Ÿ MOTOR POWER

 

MHP = BHP(1+a )/n
r     : ߷(kg/m  )
Q   : /min 
H   : m        
np : K.S ȿ(Bȿ )
a     :        
n     : ġ ȿ    
    (Ѿ )
     Ht = Hs + Hd + Hf  
     Ht : Ѿ(M)            Hs : Ծ(M)
     Hd : (M)        Hf : ս

 

(M) TOTAL HEAD

Լκ Ÿ ս θ ̷ Ѵ. սǼθ

쿡 Ѵ.

1) ԰ ̿

2) ̿

(/min) CAPACITY    :    ð ʿ Ѵ.

QUALITY OF FLUID

 1) (:û, ī, ؼ)

 2) ߷(kg/  Ǵ ton/ )

 3) µ(  Ǵ   )

 4) (Cp, Cst, SSU)

 5) (%)

ȸ RPM

ȸ Ͽ ȿ մ ȸ Ѵ.

MATERIAL

GC. SS. BC. DI. SC.

Ա
Dlameter of
suction
(/m)
Range of Water
quantity
Ա
Dlameter of
suction
( /m)
Range of Water
quantity
40mm ~0.22 100mm 0.8~2.5
50mm 0.12~0.40 125 1.0~4.0
65mm 0.25~0.80 150 2.0~6.3
80mm 0.50~1.60 200 3.15~12.5

ع߰
Altitude avobe
the sea level

Atmospheric pressure

ҷ(m)
Reduction of
suction head(m)
m mmHg m
0 760 10.33 0
250 740 10.06 0.3
500 720 9.78 0.6
750 699 9.5 0.85
1000 678 9.22 1.1
1250 658 8.95 1.4
1500 634 8.62 1.7
1750 617 8.4 1.95
2000 596 8.1 2.2
3000 526 7.15 3.2
4000 462 6.28 4.1

޼µ()
Temperature
of supplying
water
    
Specific
weight
ȭз
(kg f/cm )
Saturated
vapor
pressure
Է
Suction pressure of pump
safe for operation
0 0.999 0.0062 7.0 Ծ
(m)

suction head
20 0.998 0.024 6.5
40 0.992 0.075 5.0
60 0.983 0.203 3.0
70 0.978 0.318 1.5
75 0.975 0.393 1.0
80 0.972 0.483 0.0 Ծз
(kgf/ )

Inlet
pressure
85 0.969 0.589 0.1
90 0.965 0.715 0.25
95 0.962 0.862 0.4
100 0.958 1.03 0.5
110 0.951 1.46 1.0
120 0.943 2.03 1.5
130 0.935 2.76 2.3
140 0.926 3.69 3.3
150 0.917 4.86 4.8
160 0.907 6.3 6.4
180 0.887 10.2 10.5
200 0.865 15.9 16.8