7/21/2019 Flm300s Sick Exam2014-q1
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QUESTION 1
Alcohol is loaded into a tanker and transported to a SAB
station. At the SAB station, the tanker is
unloaded and the alcohol is discharged to a reservoir which is
located underground see figure 5.1 for
more details. A pipeline with a friction factor of 0.022 (Moody)
is used and it is connected from the
tanker to the reservoir. At outlet from the tank a ball valve is
fitted and just before the reservoir inlet a ballvalve is also
fitted. To connect the pipeline two pipe couplings and three
90flanged elbows are used. Theeffective length of the total
pipeline system is 1.6 km and the inside diameters of all pipes and
fittings is
90 mm. The pressure inside the tank is 2.5 kPa and at the
reservoir is 0.6 kPa. Both tanks are sealed
because alcohol evaporates at atmospheric conditions. If the
initial velocity of flow is 0.4 m/s, find:
1. The minor losses in the pipeline. (5)2. The major losses in
the pipeline. (2)3. The initial level of petrol between the two
reservoirs. (4)
[11]
Coupling
Ball Valve
Ball Valve
90 Elbow
90 Elbow
Level in tanker
Level in reservoirIgnore this bend
Ground level
Coupling
Ball Valve
Ball Valve
90 Elbow
90 Elbow
Level in tanker
Level in reservoirIgnore this bend
Ground level
1.8 103
kg
ms kc 0.08
f 0.022
kin 0.5 kout 1 keb 0.3 789
kg
m3
L 1600m d 0.09m
v 0.4m
s P1 2500Pa g 9.807
m
s2
P2 600Pa
hin kin
v2
2g
hout kout
v2
2g
hc 2 kc
v2
2g
heb 3 keb
v2
2g
hin 4.079 103
m
hout 8.158 103
m
heb 7.342 103
mhc 1.305 10
3 m
