Process mode and Fluid Flow mode results for the U5 example simulation
- Last UpdatedOct 04, 2024
- 2 minute read
The fire water station supply pressure of 2170 kPa (300 psig) is adequate for the increased fire water flow requirements of 0.158 m3/s (2500 gpm) as shown in the following table in the following section.
Case FF 1
The following table shows the pressure profile for the fire water delivery:
|
Fire Water Delivery |
Pressure |
Flows |
||
|---|---|---|---|---|
|
kPa |
psig |
m3/s |
gpm |
|
|
SRC1 |
2170 |
300 |
0.1577 |
2500 |
|
SNK1 |
1874 |
257 |
0.0158 |
250 |
|
SNK2 |
1874 |
257 |
0.0158 |
250 |
|
SNK3 |
1427 |
192 |
0.0158 |
250 |
|
SNK4 |
1427 |
192 |
0.0158 |
250 |
|
SNK5 |
1524 |
206 |
0.0158 |
250 |
|
SNK6 |
1524 |
206 |
0.0158 |
250 |
|
SNK7 |
1397 |
188 |
0.0158 |
250 |
|
SNK8 |
1397 |
188 |
0.0158 |
250 |
|
SNK9 |
1413 |
190 |
0.0158 |
250 |
|
SNK10 |
1413 |
190 |
0.0158 |
250 |
The SNK7 and SNK8 fire water hydrants have the lowest pressure (1397 kPa) in the network, but still satisfy the minimum pressure requirements.
Case FF 2
We must maintain a minimum supply pressure of 1804 kPa (247 psig) so that the SNK7 and SNK8 fire water hydrants meet the minimum pressure. In such a scenario, the fire water hydrants can obtain individual minimum flow requirements with a pressure profile as shown in the following table.
|
Fire Water Flows |
Pressure |
Flows |
||
|---|---|---|---|---|
|
kPa |
psig |
m3/s |
gpm |
|
|
SRC1 |
1804 |
247 |
0.1577 |
2500 |
|
SNK1 |
1508 |
204 |
0.0158 |
250 |
|
SNK2 |
1508 |
204 |
0.0158 |
250 |
|
SNK3 |
1062 |
139 |
0.0158 |
250 |
|
SNK4 |
1062 |
139 |
0.0158 |
250 |
|
SNK5 |
1159 |
153 |
0.0158 |
250 |
|
SNK6 |
1159 |
153 |
0.0158 |
250 |
|
SNK7 |
1032 |
135 |
0.0158 |
250 |
|
SNK8 |
1032 |
135 |
0.0158 |
250 |
|
SNK9 |
1048 |
137 |
0.0158 |
250 |
|
SNK10 |
1048 |
137 |
0.0158 |
250 |
Reverse flow occurs in PIPE8 when each fire water hydrant produces 0.0158 m3/s (250 gpm) of fire water.