Fluid Flow mode results for the F3 example simulation
- Last UpdatedOct 04, 2024
- 2 minute read
The following table shows the relief valve back pressures after all the equipment has been properly rated in Fluid Flow mode. The Type is Conventional for all the relief valves.
|
Variable |
Name |
UOM |
RV1 |
RV2 |
RV3 |
RV4 |
RV5 |
RV6 |
|---|---|---|---|---|---|---|---|---|
|
Size |
Size |
L |
L |
J |
J |
K |
L |
|
|
Area |
A |
mm2 |
1840.00 |
1840.00 |
830.00 |
830.00 |
1185.00 |
1840.00 |
|
Capacity |
Capacity |
% |
0.67 |
0.70 |
0.63 |
0.91 |
0.87 |
0.66 |
|
Rated mass flow |
W |
kg/h |
11339.81 |
22679.62 |
34019.43 |
4535.92 |
9071.85 |
13607.77 |
|
Set pressure |
SP |
kPa |
1005.79 |
1205.36 |
2768.87 |
614.62 |
1255.85 |
1688.08 |
|
Inlet pressure |
P1 |
kPa |
1207.69 |
1427.22 |
3147.08 |
777.40 |
1482.76 |
1958.21 |
|
Back pressure |
Pb |
kPa |
134.68 |
131.41 |
118.19 |
122.75 |
125.18 |
118.40 |
|
Back pressure fraction |
BPf |
% |
3.32 |
2.50 |
0.61 |
3.49 |
1.90 |
1.01 |
The following table shows the relief valve inlet pipes properly sized for rated capacity. The Flow Model is Incompressible and the Design Basis is RatedCapacity for all the inlet pipes.
|
Variable |
UOM |
PI1 |
PI2 |
PI3 |
PI4 |
PI5 |
PI6 |
|---|---|---|---|---|---|---|---|
|
Size |
4in |
4in |
3in |
3in |
3in |
4in |
|
|
Mass Flow |
kg/h |
16091.59 |
28606.14 |
38044.81 |
4481.85 |
10292.56 |
21060.19 |
|
Diameter |
mm |
102.26 |
102.26 |
77.93 |
77.93 |
77.93 |
102.26 |
|
Diameter Margin |
mm |
37.56 |
42.35 |
43.10 |
34.11 |
18.95 |
27.87 |
|
Length |
m |
9.14 |
9.14 |
9.14 |
9.14 |
9.14 |
9.14 |
|
Moody Friction |
0.02 |
0.02 |
0.02 |
0.02 |
0.02 |
0.02 |
|
|
Inlet Pressure |
kPa |
1172.37 |
1302.09 |
2689.10 |
711.19 |
1505.77 |
2015.89 |
|
Outlet Pressure |
kPa |
1156.62 |
1278.35 |
2679.92 |
702.77 |
1471.35 |
1988.59 |
|
Inlet Velocity |
m/s |
39.46 |
33.60 |
4.07 |
31.29 |
55.99 |
52.20 |
|
Outlet Velocity |
m/s |
40.03 |
34.32 |
19.98 |
31.67 |
57.30 |
52.92 |
|
Pressure Drop |
kPa |
15.75 |
23.74 |
9.18 |
8.42 |
34.42 |
27.30 |
|
DP Percent |
% |
1.64 |
2.22 |
0.39 |
1.54 |
2.76 |
1.59 |
The following table shows the relief valve tail pipes properly sized for rated capacity. The Flow Model is Isothermal and the Design Basis is RatedCapacity for all the tail pipes.
|
Variable |
UOM |
PT1 |
PT2 |
PT3 |
PT4 |
PT5 |
PT6 |
|---|---|---|---|---|---|---|---|
|
Size |
8in |
10in |
12in |
6in |
8in |
12in |
|
|
Mass Flow |
kg/h |
16091.59 |
28606.14 |
38044.81 |
4481.85 |
10292.56 |
21060.19 |
|
Diameter |
mm |
202.72 |
254.51 |
303.23 |
154.05 |
202.72 |
303.23 |
|
Diameter Margin |
mm |
7.51 |
55.82 |
151.76 |
51.13 |
19.66 |
11.53 |
|
Length |
m |
15.24 |
15.24 |
15.24 |
15.24 |
15.24 |
15.24 |
|
Moody Friction |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
0.00 |
|
|
Inlet Pressure |
kPa |
122.50 |
118.31 |
110.85 |
146.66 |
149.01 |
139.81 |
|
Outlet Pressure |
kPa |
113.45 |
113.45 |
108.16 |
144.57 |
144.57 |
137.25 |
|
Inlet Velocity |
m/s |
101.54 |
67.45 |
51.01 |
39.44 |
83.83 |
85.72 |
|
Outlet Velocity |
m/s |
109.69 |
70.36 |
52.29 |
40.02 |
86.41 |
87.32 |
|
Inlet Mach |
Ma1 |
0.34 |
0.30 |
0.26 |
0.13 |
0.22 |
0.22 |
|
Outlet Mach |
Ma2 |
0.37 |
0.31 |
0.27 |
0.14 |
0.23 |
0.23 |
|
Pressure Drop |
kPa |
9.05 |
4.86 |
2.69 |
2.10 |
4.45 |
2.56 |
|
DP Percent |
% |
7.39 |
4.11 |
2.43 |
1.43 |
2.98 |
1.83 |