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2 1 36 (X)
( 1 ) ( 36)1. (N
S) (Axial Flow)
. 500 < NS
< 1,500
. 2,000 < NS < 6,000. 7,000 < N
S< 20,000
. 20,000 2. (Suction) Foot Valve
. . . .
3. Cavitations. casing
.
. . suction lift
4. Cavitations . NPSHA > NPSHR. NPSH
A< NPSH
R
. NPSHA = NPSHR
. 5. Shop test
. .
.
.
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6. .
. . .
7. . . . (system head).
8. (Discharge) Check Valve . . . .
9. . . . valve .
10. cavitations . suction lift.
. . . .
11. 100 30 75% 85%
. 46.14 kW. 36.14 kW
. 26.14 kW. 16.14 kW
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12. (Net Positive Suction Head, NPSH)
. . . .
13. 100 7 15 3.50 23.00 7.00 75% 90%
. 46.14 kW. 118.97 kW. 167.65 kW. 197.97 kW
14. 100 3.50 1.75 50 3 / 300 42.15 15 21.00 80% 70% 2
. 51.68 kW. 64.76 kW. 71.11 kW. 81.11 kW
15. 150 / 4.50 5.00 16.75
75%
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. 41.50 kW. 51.50 kW
. 61.50 kW. 71.50 kW
16. 960 / 125 / 30 52.55 kW 1,450 ()
. 181.07 kW. 175.00 kW. 160.50 kW. 140.00 kW
17. Inverter (Hertz) 50 Hz 30 Hz 50 Hz 250 / 42 kW ( 4 Poles)
. 5 kW. 9 kW. 12 kW. 16 kW
18. 200 / 20.00 1,450 / 380 150 / 15.75
. 290 . 300 . 320 . 347
19. 150 / 20.00 1,450 250
24.00 ()
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. 177 /. 187 /
. 197 /. 207 /
20. (Mixed Flow). H . H
Q Q
. H . H
Q Q
21. 3 ../ 75 60% 85%
85%. 2.75 kW. 3.24 kW. 3.45 kW. 4.38 kW
22. 15 ../ 150 40
20 55% 90%
. 3.46 kW. 4.54 kW. 6.36 kW. 7.42 kW
23. 20 ../ 100 100
4 kW 25 ../
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. 4.52 kW. 5.15 kW
. 6.12 kW. 7.81 kW
24. 40 ../ 250 60% 85% 400 25 kW Overload
. 43 ../
. 46 ../. 48 ../. 50 ../
25. 150 ../ 100 450 200 ../
. 500 /. 600 /. 650 /. 750 /
26. 200 ../ 4 50 kW 1500 50 Hertz Inverter 15 Hertz
. 40.00 kW. 25.75 kW. 15.15 kW. 1.35 kW
27. Built up Coil 450 ../ 250 450 ../ 100
2 55%
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. 250 kW. 275 kW
. 327 kW. 375 kW
28. 2 35../ 70 ../ 65% 200 2
. 32.30 kW. 42.30 kW. 52.30 kW. 55.30 kW
29. Class
. .
.
.
30. (Specific Speed)
. Forward
. Backward
. Propeller Fan. Axial Fan
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5 31. - 35.
Pump 230 m3
/hour 30o
C
(water density 1,000 kg/m3
) Center Line Pump 2.5 m Center Line Pump 4.5m. Foot Valve 1 2 m Suctionloss 0.67 m Check Valve 1 Gate Valve (Fully Open) 1 Long Radius Elbow 3 8 m Discharge line loss 0.8 m Steel Pipe Schedule 40 2m/s 3 m/s.
31. Net Suction Head Pump. 3.37 m. 2.37 m. 0.34 m. 2.50 m
32. Net Discharge Head Pump. 5.30 m. 5.76 m. 0.58 m. 4.50 m
33. Net Pump Operating Head. 8.67 m. 7.00 m. 9.13 m. 29.6 m
34. Pump Power Pump 75%. 8.55 kW. 9.71 kW
. 8.21 kW
. 7.63 kW
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35. Motor Motor 93%
. 8.21 kW. 8.83 kW. 10.44 kW. 9.19 kW
36. Centrifugal Pump 36 cu.m/hr Total Head 80 m 2,000 rpm Pump Power 10 kW Pump 78% Pump 3,000 rpm
Total Head Pump Power 3,00 rpm (5)()
1. Q2/Q1 = n2/n1
Q2 = Q1*( n2/n1) = 36*3000/2000
= 54.0 m3/h
2. H2/H1 = (n2/n1)2
H2 = H1*(n2/n1)2
= 80 * (3000/2000)2
= 180.0 m
3. P2/P1 = (n2/n1)3
P2 = P1*(n2/n1)3
= 10*(3/2)3
= 33.75 kW
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2 3 1.1. 1 (5 )
. . . . .
1.2 (5 )
. . . . .
1.3 () (5 )
. 78 . 21 . 0.93 . 0.06 . Neon, Helium 0.01
1.4 1.013 1,800 7 () (5 )
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PgPoPoCoVr+
= 3
5 (Pump / Fan / Compressor) 3/2549
Vr = (..)
Po = ()Pg = ()Co = (../)
- Po = 1.013 - Pg = 7.0 - Po + PG = 8.013 - Co = 25 ../- Vr = 11.4 ..
2. 2.1 (Water Hammer) (5 ) 2.2 Water Hammer (5 ) Water Hammer2.3 Water Hammer (5 ) Water Hammer
- (Critical Time TC)
-
-
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2.4 Water Hammer 3 (5 )
- Pressure Relief Valve
- Air Inlet-relief Valve
- Air Chamber
- Surge Suppressor
- Surge Tank