8/3/2019 nrv check

1/4

Pressure Flow Rate Sp. Volume Velocity

OD THICK Kg/cm2 Kg/hr m3/kg m/sec

60.30 8.74 105.00 4200.00 0.0322 26.09 24.00 0.00 0.00

Globe Gate NRV 180o

90o

60o

45o D d QTY D d Q

0.0 0.0 1.0 0.0 7.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

At Entrance

K = 20.0

= 0.00 m

At Exit

K = 40.0

= 0.00 m

Total Eq. Length, TEL = 24.00 m

if < OD 152 mm

if > OD 152 mm

Where,

P = 0.0096 bar

P = 0.0098 Kg/cm2

Where,

31.0559 (1/ specific volume)

Angle = 180o

90o

60o

45o

K-Value = 2.00 0.90 0.90 0.45

P in Kg/cm2

= 0.000 0.679 0.0000.000

K = 1.8

P = 0.194 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

K = 8

P = 0.000 Kg/cm2

K = 1.2

P = 0.0000 Kg/cm2

K = 11.4

P = 1.228 Kg/cm2

= 0

K = 8

Where,

P = 0.0000 Kg/cm2

P = 2.110 Kg/cm2

K = 8 Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

g = Acceleration due to gravity m/sec2

= 9.81

Total Pressure Drop

K = Value taken from BHEL hand book, K = 2 - 5

Pressure Drop in orificeNo. of orifice

P =K x V

2x r x 10

-4

2 x g

Pressure Drop in Globe Valves

K = Value taken from BHEL hand book, K = 5 - 8

Pressure Drop in Gate ValvesK = Value taken from BHEL hand book, K = 0.2 - 1.2

Pressure Drop in NRV Valves

Pressure Drop in ExpandersK = Value taken from BHEL hand book from d/D value

Therefore,

Pressure Drop in ReducersK = Value taken from BHEL hand book from d/D value

Therefore,

K = Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

=

g = Acceleration due to gravity m/sec2

= 9.81

Pressure Drop In Elbows

Pressure Drop in Tee Joints

ID = Inside Diameter of the pipe in mm

V = Specific Volume in m3/Kg

P = pressure drop in bar

Pressure Drop in Valves & Fittings

P =K x V

2x r x 10

-4

2 x g

P =87.53 x 10

4x ((1+91.44)/ID) x F

2x V x TEL

ID5

F = Flow rate of the fluid in Kg/s

TEL = Total Effective Length in m

Pressure Drop in Pipe Length

P =120 x 10

4x F

1.85x V x TEL

ID4.97

No. of Reduce

Equavalent LengthEq. Length in terms of Diameter = QTY x Size x K

Eq. Length in terms of Diameter = QTY x Size x K

No. of

ExitNo. of T

oC

-

520.00 1.0

No. of Valves No. of Elbows No. of Expanders

o DescriptionPipe Size Temperature Pipe

Length(m)

No. of

Entrance

8/3/2019 nrv check

2/4

Pressure Flow Rate Sp. Volume Velocity

OD THICK Kg/cm2 Kg/hr m3/kg m/sec

73.00 5.16 - 15000.00 0.0010 1.35 2.50 1.00 0.00

Globe Gate NRV 180o

90o

60o

45o D d QTY D d Q

1.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

At Entrance

K = 20.0

= 1.46 m

At Exit

K = 40.0

= 0.00 m

Total Eq. Length, TEL = 3.96 m

if < OD 152 mm

if > OD 152 mm

Where,

P = 0.0001 bar

P = 0.0001 Kg/cm2

Where,

1000 (1/ specific volume)

Angle = 180o

90o

60o

45o

K-Value = 2.00 1.80 0.90 0.45

P in Kg/cm2

= 0.000 0.017 0.0000.000

K = 1.8

P = 0.000 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

K = 8

P = 0.074 Kg/cm2

K = 1.2

P = 0.0000 Kg/cm2

K = 5

P = 0.000 Kg/cm2

= 0

K = 8

Where,

P = 0.0000 Kg/cm2

P = 0.091 Kg/cm2

K = 8 Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

g = Acceleration due to gravity m/sec2

= 9.81

Total Pressure Drop

K = Value taken from BHEL hand book, K = 2 - 5

Pressure Drop in orificeNo. of orifice

P =K x V

2x r x 10

-4

2 x g

Pressure Drop in Globe Valves

K = Value taken from BHEL hand book, K = 5 - 8

Pressure Drop in Gate ValvesK = Value taken from BHEL hand book, K = 0.2 - 1.2

Pressure Drop in NRV Valves

Pressure Drop in ExpandersK = Value taken from BHEL hand book from d/D value

Therefore,

Pressure Drop in ReducersK = Value taken from BHEL hand book from d/D value

Therefore,

K = Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

=

g = Acceleration due to gravity m/sec2

= 9.81

Pressure Drop In Elbows

Pressure Drop in Tee Joints

ID = Inside Diameter of the pipe in mm

V = Specific Volume in m3/Kg

P = pressure drop in bar

Pressure Drop in Valves & Fittings

P =K x V

2x r x 10

-4

2 x g

P =87.53 x 10

4x ((1+91.44)/ID) x F

2x V x TEL

ID5

F = Flow rate of the fluid in Kg/s

TEL = Total Effective Length in m

Pressure Drop in Pipe Length

P =120 x 10

4x F

1.85x V x TEL

ID4.97

No. of Reduce

Equavalent LengthEq. Length in terms of Diameter = QTY x Size x K

Eq. Length in terms of Diameter = QTY x Size x K

No. of

ExitNo. of T

oC

suction

- 0.0

No. of Valves No. of Elbows No. of Expanders

o DescriptionPipe Size Temperature Pipe

Length(m)

No. of

Entrance

8/3/2019 nrv check

3/4

Pressure Flow Rate Sp. Volume Velocity

OD THICK Kg/cm2 Kg/hr m3/kg m/sec

168.30 7.11 - 45000.00 0.0010 0.67 7.00 1.00 0.00

Globe Gate NRV 180o

90o

60o

45o D d QTY D d Q

0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0

At Entrance

K = 20.0

= 3.37 m

At Exit

K = 40.0

= 0.00 m

Total Eq. Length, TEL = 10.37 m

if < OD 152 mm

if > OD 152 mm

Where,

P = 0.0000 bar

P = 0.0000 Kg/cm2

Where,

1000 (1/ specific volume)

Angle = 180o

90o

60o

45o

K-Value = 2.00 1.80 0.90 0.45

P in Kg/cm2

= 0.000 0.008 0.0000.000

K = 1.8

P = 0.004 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0006 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

K = 8

P = 0.000 Kg/cm2

K = 1.2

P = 0.0000 Kg/cm2

K = 5

P = 0.000 Kg/cm2

= 0

K = 8

Where,

P = 0.0000 Kg/cm2

P = 0.013 Kg/cm2

K = 8 Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

g = Acceleration due to gravity m/sec2

= 9.81

Total Pressure Drop

K = Value taken from BHEL hand book, K = 2 - 5

Pressure Drop in orificeNo. of orifice

P =K x V

2x r x 10

-4

2 x g

Pressure Drop in Globe Valves

K = Value taken from BHEL hand book, K = 5 - 8

Pressure Drop in Gate ValvesK = Value taken from BHEL hand book, K = 0.2 - 1.2

Pressure Drop in NRV Valves

Pressure Drop in ExpandersK = Value taken from BHEL hand book from d/D value

Therefore,

Pressure Drop in ReducersK = Value taken from BHEL hand book from d/D value

Therefore,

K = Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

=

g = Acceleration due to gravity m/sec2

= 9.81

Pressure Drop In Elbows

Pressure Drop in Tee Joints

ID = Inside Diameter of the pipe in mm

V = Specific Volume in m3/Kg

P = pressure drop in bar

Pressure Drop in Valves & Fittings

P =K x V

2x r x 10

-4

2 x g

P =87.53 x 10

4x ((1+91.44)/ID) x F

2x V x TEL

ID5

F = Flow rate of the fluid in Kg/s

TEL = Total Effective Length in m

Pressure Drop in Pipe Length

P =120 x 10

4x F

1.85x V x TEL

ID4.97

No. of Reduce

Equavalent LengthEq. Length in terms of Diameter = QTY x Size x K

Eq. Length in terms of Diameter = QTY x Size x K

No. of

ExitNo. of

oC

Main Steam inlet to Turbine

- 1.0

No. of Valves No. of Elbows No. of Expanders

o DescriptionPipe Size Temperature Pipe

Length(m)

No. of

Entrance

8/3/2019 nrv check

4/4

Pressure Flow Rate Sp. Volume Velocity

OD THICK Kg/cm2 Kg/hr m3/kg m/sec

48.30 3.68 1.00 15000.00 0.0010 3.17 2.00 0.00 0.00

Globe Gate NRV 180o

90o

60o

45o D d QTY D d Q

1.0 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

At Entrance

K = 20.0

= 0.00 m

At Exit

K = 40.0

= 0.00 m

Total Eq. Length, TEL = 2.00 m

if < OD 152 mm

if > OD 152 mm

Where,

P = 0.0003 bar

P = 0.0003 Kg/cm2

Where,

1000 (1/ specific volume)

Angle = 180o

90o

60o

45o

K-Value = 2.00 0.90 0.90 0.45

P in Kg/cm2

= 0.000 0.000 0.0000.000

K = 1.8

P = 0.000 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

d/D = #DIV/0! K = 0.25

P = 0.0000 Kg/cm2

K = 8

P = 0.409 Kg/cm2

K = 1.2

P = 0.0000 Kg/cm2

K = 5

P = 0.255 Kg/cm2

= 0

K = 8

Where,

P = 0.0000 Kg/cm2

P 0 664 K /2

K = 8 Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

g = Acceleration due to gravity m/sec2

= 9.81

Total Pressure Drop

K = Value taken from BHEL hand book, K = 2 - 5

Pressure Drop in orificeNo. of orifice

P =K x V

2x r x 10

-4

2 x g

Pressure Drop in Globe Valves

K = Value taken from BHEL hand book, K = 5 - 8

Pressure Drop in Gate ValvesK = Value taken from BHEL hand book, K = 0.2 - 1.2

Pressure Drop in NRV Valves

Pressure Drop in ExpandersK = Value taken from BHEL hand book from d/D value

Therefore,

Pressure Drop in ReducersK = Value taken from BHEL hand book from d/D value

Therefore,

K = Value taken from BHEL hand book

V = Velocity of the fluid in m/sec

r = Density of the fluid in kg/m3

=

g = Acceleration due to gravity m/sec2

= 9.81

Pressure Drop In Elbows

Pressure Drop in Tee Joints

ID = Inside Diameter of the pipe in mm

V = Specific Volume in m3/Kg

P = pressure drop in bar

Pressure Drop in Valves & Fittings

P =K x V

2x r x 10

-4

2 x g

P =87.53 x 10

4x ((1+91.44)/ID) x F

2x V x TEL

ID5

F = Flow rate of the fluid in Kg/s

TEL = Total Effective Length in m

Pressure Drop in Pipe Length

P =120 x 10

4x F

1.85x V x TEL

ID4.97

No. of Reduce

Equavalent LengthEq. Length in terms of Diameter = QTY x Size x K

Eq. Length in terms of Diameter = QTY x Size x K

No. of

ExitNo. of T

oC

-

60.00 0.0

No. of Valves No. of Elbows No. of Expanders

o DescriptionPipe Size Temperature Pipe

Length(m)

No. of

Entrance