Scribd
Upload
40 views3 pages

Valve Flowrate and Pressure Data

The document provides input data and calculations for determining flow coefficients (Cv) for valves in gas, liquid, and liquid-vapor systems. It includes inlet/outlet pressures, temperatures, mass flow rates, and fluid properties. The calculations determine the flow coefficient based on the input data and standard equations for compressible and incompressible flow.

Uploaded by

lucaavvisati.stp
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
40 views3 pages

Valve Flowrate and Pressure Data

The document provides input data and calculations for determining flow coefficients (Cv) for valves in gas, liquid, and liquid-vapor systems. It includes inlet/outlet pressures, temperatures, mass flow rates, and fluid properties. The calculations determine the flow coefficient based on the input data and standard equations for compressible and incompressible flow.

Uploaded by

lucaavvisati.stp
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

GAS/VAPOUR LIQUID

INPUT DATA NOTES INPUT DATA NOTES


P1 Inlet Pressure, kPa 9000 P1 Inlet Pressure, kPa 9000
P2 Outlet Pressure, kPa 700 P2 Outlet Pressure, kPa 700
W Mass Flowrate, kg/h 500 W Mass Flowrate, kg/h 5024
W Mass Flowrate wth Overdesign, kg/h 550,00 W Mass Flowrate wth Overdesign, kg/h 5526
N8 0,948 N6 2,73
k=cp/cv 1,100 rho, kg/m3 1004,000
M=PM 3,93 s.g. 1,005
xt 0,7 2" Globe Valve - TAB. 5 pag. 23/29 T1 Upstream Temperature, °C 55
T1 Upstream Temperature, °C 30 T1 Upstream Temperature, K 328,15
T1 Upstream Temperature, K 303

RESULTS NOTES RESULTS NOTES


x 0,9222 Cv 0,6375
Non uso specific gravity, risultati più vicini all'altra formula in mcubu
Y 0,4409
Cv 1,216
LIQUID TO LIQUID/VAPOR
INPUT DATA INPUT DATA FOR LIQUID PORTION NOTES
Total Liquid Inlet, kg/h 22883 P1 Inlet Pressure, kPa 3040,1
Weight Vaporization Fraction 0,1456 P2 Outlet Pressure, kPa 1569,1
P1 Inlet Pressure, kPa 3040,1 W Mass Flowrate, kg/h 19551,24
P2 Outlet Pressure, kPa 1569,1 W Mass Flowrate wth Overdesign, kg/h 21506,36
T1 Valve Inlet Temperature, °C 123 N6 2,73
T2 Valve Outlet Temperature, °C 90 Outlet Liquid rho, kg/m3 722,600
s.g. 0,723
T1 Upstream Temperature, °C 123
T1 Upstream Temperature, K 396

RESULTS RESULTS NOTES


Cv 14 Cv 6,9 Non metto specific gravity

Considero CV=15 da tabella pag.23/29


INPUT DATA FOR VAPOR PORTION NOTES
P1 Inlet Pressure, kPa 3040,1
P2 Outlet Pressure, kPa 1569,1
W Mass Flowrate, kg/h 3331,76
W Mass Flowrate wth Overdesign, kg/h 3664,94
N8 0,948
Outlet Vapor k=cp/cv 1,149
Outlet Vapor M=PM 54,34
xt 0,7 2" Globe Valve - TAB. 5 pag. 23/29
T1 Upstream Temperature, °C 123
T1 Upstream Temperature, K 396,15

RESULTS NOTES
x 0,4839
Y 0,7190
Cv 6,9

You might also like