Main cooling water circulation pump / lines

pipe line pump discharge pump suction

4229 m^3/hr Flow 2400 m^3/hr Flow 2400
1.174722 per sec flow 0.666667 per sec flow 0.666667 per sec flow
2.1 m/s velocity 2 m/s velocity 1 velocity
0.559392 m^2 cross sec area required 0.333333 cross sec area required 0.666667 cross sec area required
0.712601 0.424628 0.849257
0.844157 m dia in mtr 0.651635 dia in mtr 0.921551 dia in mtr
1000 mm i/d of pipe selected 650 mm i/d of pipe selected 1000mm i/d of pipe selected
120 m Pipe length 10 m Pipe length 10 m Pipe length
0.4 m head loss in line 0.4 m head loss in pipe line 0.2 m head loss in pipe line
0.4 m head loss in reducers 2 nos 0.4 m head loss in reducers 1 nos
0.8 m head loss in vlaves 2 nos 0.8 m head loss in vlave
0.4 m head loss in NRV 0.8 m head loss in NRV
0.6 m head loss in bends 6 nos 0.6 m head loss in bends 6 nos
0.1 m head loss in entry 0.1 m head loss in strainer

0.4 m 2.7 m 2.9 m

head loss in pipe line 0.4 m

head loss in discharge line 2.7 m
head loss in suction line 2.9 m
for old pipes multiply by 1.5 9 m
head Static 9 m
NPSH 0.5 m 2070 2114.5
Pressure drop across condencer 15 m
33.5 m
Hence 35 mtr head
Head Calculations for DM makeup water pump / lines
pump discharge pump suction
30 m^3/hr Flow 30
0.008333 per sec flow 0.008333 per sec flow
2 m/s velocity 1 velocity
0.004167 cross sec area required 0.008333 cross sec area required
0.005308 0.010616
0.072855 dia in mtr 0.103033 dia in mtr
100NB x 20 sch pipe selected 100 NB x sch 20 Pipe selected
108 mm i/d of pipe selected 108 i/d of pipe selected
400 m Pipe length 10 m Pipe length

6.6 m head loss in pipe line 0.2 m head loss in pipe line
0.1 m head loss in reducers 2 nos 0.1 m head loss in reducers 1 nos
0.4 m head loss in vlaves 2 nos 0.2 m head loss in vlave
0.1 m head loss in NRV 0.1 m head loss in NRV
0.1 m head loss in bends 6 nos 0.1 m head loss in bends1 nos
0.2 m head loss in strainer

7.3 m total discharge line head 0.9 m total suction line head

head loss in discharge line 7.3 m

head loss in suction line 0.9 m
for old pipe multiply by 1.1 9.02 m
pressure head 35 m
44.02 m
Hence 45 mtr head
Head Calculations for cooling makeup water pump / lines
pump discharge pump suction
150 m^3/hr Flow 150
0.041667 per sec flow 0.041667 per sec flow
2 m/s velocity 1 velocity
0.020833 cross sec area required 0.041667 cross sec area required
0.026539 0.053079
0.162909 dia in mtr 0.230388 dia in mtr
200 NB x 20 sch pipe selected 250 NB x sch 20 pipe selected
205 mm i/d of pipe selected 257.45 i/d of pipe selected
400 m Pipe length 10 m Pipe length

5.3 m head loss in pipe line 0.3 m head loss in pipe line
0.9 m head loss in reducers 1 nos 1 m head loss in reducers 1 nos
0.8 m head loss in vlaves 2 nos 0.1 m head loss in vlave
0.9 m head loss in NRV 0.4 m head loss in NRV
0.5 m head loss in bends 6 nos 0.1 m head loss in bends1 nos
0.1 m head loss in strainer

8.4 m total discharge line head 2 m total suction line head

head loss in discharge line 8.4 m

head loss in suction line 2 m
for old pipe multiply by 1.5 15.6 m
15.6 m
Hence 20 mtr head
Aux. cooling water circulation pump / lines
pipe line pump discharge pump suction
600 m^3/hr Flow 600 m^3/hr Flow 600
0.166667 per sec flow 0.166667 per sec flow 0.166667 per sec flow
2.1 m/s velocity 2.1 m/s velocity 1 m/s velocity
0.079365 m^2 cross sec area required 0.079365 m^2 cross sec area required 0.166667 m^2 cross sec area required
0.101102 0.101102 0.212314
0.317965 m dia in mtr 0.317965 m dia in mtr 0.460776 m dia in mtr
350 mm i/d of pipe selected 350 mm i/d of pipe selected 500 mm i/d of pipe selected
120 m Pipe length 10 m Pipe length 10 m Pipe length
1.9 m head loss in line 0.4 m head loss in pipe line 0.2 m head loss in pipe line
0.4 m head loss in reducers 2 nos 0.4 m head loss in reducers 2 nos
0.8 m head loss in vlaves 2 nos 0.8 m head loss in vlave
0.4 m head loss in NRV 0.8 m head loss in NRV
0.6 m head loss in bends 6 nos 0.6 m head loss in bends 6 nos
0.1 m head loss in entry 0.1 m head loss in strainer

1.9 m 2.7 m 2.9 m

head loss in pipe line 1.9 m

head loss in discharge line 2.7 m
head loss in suction line 2.9 m
head Static 2 m
for old pipe multiply by 1.5 plus 11 m 22.25 m
NPSH 0.5 m
24.75 m
Hence 25 mtr head
c area required

s in reducers 2 nos

s in bends 6 nos
Dia of steam condensor pipe

Water req. Q 4229 m3/hr

Let water velocity V 2 m/sec
Calculated pipe dia D 0.8650033033412 m
Liquid velocity in selected pipe Vcal 1.3580551862457 m/sec
Reynold no. Re 1174722.2222222
E/D 0.0004624259797
Friction factor from Moody chart f 0.017

Pressure drop(∆P) f*L*p/(D*10000)(Vcal/ 3.0224138122091 kg/cm2

61.1042

167243
 865.003303341221

Length of straight pipe Considered 170 m

0.005
0.001
0.002
0.017