2. 





3. 3




4.  Static Head
 Suction Head
( )
 Suction Lift
 Discharge Static Head
 Total dynamic head ( ) = Static head +

6. HP = QH
3960
HP =
Q = gpm
H =
=

7. kW = QH
102
kW =
Q = lps
H =
=

8. 0.37 kW (0.5 HP) 0.75 kW (1 HP) 1.12 kW (1.5 HP)
1.49 kW (2 HP) 2.24 kW (3 HP) 3.73 kW (5 HP)
5.60 kW (7.5 HP) 7.46 kW (10 HP) 11.19 kW (15 HP)
14.92 kW (20 HP) 18.65 kW (25 HP) 22.38 kW (30 HP)
29.84 kW (40 HP) 37.30 kW (50 HP) 44.76 kW (60 HP)
55.95 kW (75 HP) 74.60 kW (100 HP)

9. EX I
(Contrifugal pump)
20 lps
 50
 1
 12
 70%

10.  Discharge static head = 50
 Suction head = 1 = 10
 = 50 – 10 + 12 = 52

kW = (20) (52) = 14.56
(106) (0.7)
20 lps 52 14.92
kW

11. (Elevated Tank System)
 4

-
4 1
-
1

12.  380 lpm (100 gpm)
40
 380 lpm
30
15
 (cooling tower)
15

13. 3.1
Apartments

14. 3.1
Hotels and Clubs

15. 3.1
Hospitals

16. 3.1
Office building

17. 3.1
Industrial building

18. 3.1
Schools

19. Example II
500
1.0 lps
1.2 lps
30

20.  = 1.04 lpm/fixture
 = (1.04)(500) = 520 lpm
 = 1 lps = 60 lpm
 = 1.2 lps = 72 lpm
 = (520+60+72) = 10.87 lps
60
 = (520+60)(30) + (72)(15)
= 18.48 m3
20 m3

21.  = QH
102
= (10.87)(30)
(102) (0.7)
= 4.57 kw
10.87 lps 30 m. 5.6 kW

22. (Direct Boosting System)

 Booster
Pump


23. (pressure tank)

 2
-
(pressure tank system)
-
(precharged hydropneumatic
system)
 3

25. Precharge Hydro-Pneumatic System


Pressure tank
system

16 lps
2

32 lps
3

26. Example I
4
3.5 60 FU
flush
tank angle valve

27. = (60)(4) = 240 FU
Hunter’s curve 75 gpm
= 4.73 lps
= (3.5)(4) = 14 m
0.6 =6 m
30%
=(1.3)(14)+6 = 24.2 m
60 %
QH = (4.73)(24.2) = 1.87 kW
102 (102)(0.6)

28. 2 65 : 65 %
Q = (4.73)(0.65) = 3 lps
= (3)(24.2) = 1.19 kW
(102)(0.6)
2
3 lps 24 m 1.12 kW

29. Homework


30

4

50

10
30 %