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103.B.0 - FO Pump Head Calculation

This document calculates the head requirements for three different fuel oil pumps used in a 270 MW thermal power plant: an LDO unloading pump, FO unloading pump, and drain oil pump. It provides input data on fuel properties and pipe dimensions. Calculations are shown to determine the suction pressure, discharge pressure, and total dynamic head required for each pump based on flow rates, pipe lengths and fittings, fluid properties, and elevation changes. The required head is adopted as the pump specification.

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mkchy12
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411 views9 pages

103.B.0 - FO Pump Head Calculation

This document calculates the head requirements for three different fuel oil pumps used in a 270 MW thermal power plant: an LDO unloading pump, FO unloading pump, and drain oil pump. It provides input data on fuel properties and pipe dimensions. Calculations are shown to determine the suction pressure, discharge pressure, and total dynamic head required for each pump based on flow rates, pipe lengths and fittings, fluid properties, and elevation changes. The required head is adopted as the pump specification.

Uploaded by

mkchy12
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
You are on page 1/ 9

Ideal Energy Projects Ltd

1 x 270 MW Thermal Power Project


Input Data
LDO specification
LDO unloading pump capacity, Q
P m
3
/hr
Temperature of fuel oil, T deg.C
Density of fuel oil, kg/m
3
Kinematic viscosity of fuel oil at 50 deg.C cSt
Absolute roughness (for steel commercial pipe), mm
Calculation
Suction Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos. 18 1 3
135 0 0
340 0 0
60 1 0
13 0 0
16 1 0
20 0 10
L/D
20 1 5
4.80 6.02
8.0 140.0
80 100
88.0 114.3
Pipe line
1-2
Pipe line
2-3
3.1 25.0
15
0.0457
CALCULATION OF LDO UNLOADING PUMP HEAD
25
50
860
As per IS 1460
1
2
3
4
5
E
I
G
H
T

(
8
)

N
O
S
.

L
D
O

LDO TANK
LDO UNLOADING PUMP
McNally Bharat Engineering Company Ltd, Kolkata
( 2-BP01-DC0-U-2-0001-R0)
Page 1 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project
Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
Friction drop in suction pipeline, h
f1
mwc
Total suction line friction drop with 10% margin, h
fs
mwc
Misc. item pressure drop (strainer), h
f2
mwc
Static height between tanker & pump centerline, h
S
mlc
= mwc
Pump suction pressure, P
S
[=h
S
-(h
fs
+h
f2
)] mwc
Discharge Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos.
Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
Friction drop in discharge pipeline, h
f1
mwc
Pipe line
2-3
135
3.41
18 4
Pipe line
1-2
7.6E+03
0.034
1.46
1.50E-05
77.92
83.3
1
340 0
60 0
13 0
16 0
20 1
50.0
L/D
20 10
88.9
5.49
25.0
80
1.0
0.86
-4.34
Pipe line
4-5
0.02 1.98
2.20
3.00
9.4E+02 5.8E+03
0.068 0.037
0.18 0.85
1.50E-05 1.50E-05
78.40 102.26
16.9 176.2
McNally Bharat Engineering Company Ltd, Kolkata
( 2-BP01-DC0-U-2-0001-R0)
Page 2 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project
Total discharge line friction drop with 10% margin, h
fd
mwc
Misc. item pressure drop (Flow Meter), h
f2
mwc
Static height between pump centerline & LDO tank inlet, h
D
mlc
= mwc
Pump discharge pressure, P
D
[=h
D
+(h
fd
+h
f2
)] mwc
Pump TDH, H [=P
D
-P
S
] mwc
Pump TDH (adopted) mwc
8.60
13.35
17.70
3.75
18.00
10.0
1.00
McNally Bharat Engineering Company Ltd, Kolkata
( 2-BP01-DC0-U-2-0001-R0)
Page 3 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project

Input Data
Furnace Oil specification
FO unloading pump capacity, Q
P m
3
/hr
Temperature of fuel oil, T deg.C
Density of fuel oil, kg/m
3
Kinematic Viscosity of fuel oil at 50 deg.C cSt
Absolute roughness (for steel commercial pipe), mm
Calculation
Suction Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos. 3 18 1
135 0 0
340 0 0
60 1 0
13 0 0
16 1 0
20 0 10
L/D
20 1 5
4.80 7.11
8.0 145.0
80 150
88.0 168.3
Pipe line
1-2
Pipe line
2-3
3.1 25.0
180.0
0.0457
CALCULATION OF FUEL OIL UNLOADING PUMP HEAD
25
50
960
Grade MV2 as per IS 1593
1
2
3
4
5
E
I
G
H
T

(
8
)

N
O
S
.

F
O

FO TANK
FO UNLOADING PUMP
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
Page 4 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project

Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
Friction drop in suction pipeline, h
f1
mwc
Total suction line friction drop with 10% margin, h
fs
mwc
Misc. item pressure drop (strainer), h
f2
mwc
Static height between tanker & pump centerline, h
S
mlc
= mwc
Pump suction pressure, P
S
[=h
S
-(h
fs
+h
f2
)] mwc
Discharge Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos.
Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
18 4
Pipe line
2-3
1
0
1
13
Pipe line
1-2
135
340
60
4.8E+02
0.133
0.85
1.80E-04
102.26
87.8
0
16 0
20 0
40.0
L/D
20 10
114.3
6.02
25.0
100
0.5
0.48
-4.77
Pipe line
4-5
1.77
2.25
3.00
7.8E+01 3.2E+02
0.817 0.201
0.28
0.37
1.80E-04 1.80E-04
78.40 154.08
16.9 199.5
0.18
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
Page 5 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project

Friction drop in discharge pipeline, h
f1
mwc
Total discharge line friction drop with 10% margin, h
fd
mwc
Flow meter pressure drop, h
f2
mwc
Static height between pump centerline & FO tank inlet, h
D
mlc
= mwc
Pump discharge pressure, P
D
[=h
D
+(h
fd
+h
f2
)] mwc
Pump TDH, H [=P
D
-P
S
] mwc
Pump TDH (adopted) mwc 26.00
14.5
13.92
19.32
24.09
4.00
4.40
1.00
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
Page 6 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project
Input Data
DO pump capacity, Q
P m
3
/hr
Temperature of fuel oil, T deg.C
Density of fuel oil, kg/m
3
Kinematic Viscosity of fuel oil at 50 deg.C cSt
Absolute roughness (for steel commercial pipe), mm
Calculation
Suction Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos. 18 1
135 0
340 0
60 0
13 0
16 0
20 1
3.0
L/D
20 4
88.0
5.40
Pipe line
1-2
5.0
80
180.0
0.0457
CALCULATION OF DRAIN OIL PUMP HEAD
5
50
960
1
2
3
4
FO TANK
DRAIN OIL PUMP
DRAIN OIL
TANK
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
7 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project
Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
Friction drop in suction pipeline, h
f1
mwc
Total suction line friction drop with 10% margin, h
fs
mwc
Misc. item pressure drop , h
f2
mwc
Static height between tank & pump centerline, h
S
mlc
= mwc
Pump suction pressure, P
S
[=h
S
-(h
fs
+h
f2
)] mwc
Discharge Side Pressure
Flow through pipe, Q m
3
/hr
Pipe size, NB
Pipe o.d., d
o
mm
Thickness, t mm
Straight length, L m
Fittings -
90 deg elbow, N
1
nos.
45 deg elbow, N
2
nos.
Straight Tee, N
3
nos.
Branch Tee, N
4
nos.
Gate Valve, N
5
nos.
Check Valve, N
6
nos.
Globe Valve, N
7
nos.
Plug Valve, N
8
nos.
Pipe i.d., d
i
[=d
o
-2xt] mm
Equivalent length, L
E
[=L + (L/D)xNxd
i
] m
Velocity of fluid, V m/sec
Kinematic viscosity, m
2
/sec
Reynold's Number, Re
Friction factor, f
Friction drop in discharge pipeline, h
f1
mwc
135 1
16 0
20
18 2
6.64
1.9E+02
0.342
0.64
1.80E-04
52.48
50.5
0
60
13 0
340
1
L/D
20 10
3.91
30.0
50
60.3
0.11
Pipe line
3-4
5.0
0.37
0.00
0.5
0.48
0.503
0.34
1.80E-04
1.3E+02
12.1
0.30
Pipe line
1-2
77.20
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
8 of 9
Ideal Energy Projects Ltd
1 x 270 MW Thermal Power Project
Total discharge line friction drop with 10% margin, h
fd
mwc
Stainer pressure drop, h
f2
mwc
Static height between pump centerline & FO tank inlet, h
D
mlc
= mwc
Pump discharge pressure, P
D
[=h
D
+(h
fd
+h
f2
)] mwc
Pump TDH, H [=P
D
-P
S
] mwc
Pump TDH (adopted) mwc 26.00
17.0
16.32
24.63
24.52
7.31
1.00
McNally Bharat Engineering Company Ltd, Kolkata
(2-BP01-DC0-U-2-0001-R0)
9 of 9

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