A vented 50-gallon cylindrical reservoir (diameter = 18 inches) is used to supply ambient temperature (20 °C) water to a laboratory experiment. As shown in the accompanying figure, the water exits the reservoir via a port near the bottom. A 3 m length of flexible plastic tubing (internal diameter = 8 mm) is run horizontally with the tubing outlet at atmospheric pressure. A pressure transducer, affixed to the short constriction segment in the middle of the plastic tubing, is connected to an alarm system to notify the lab personnel when the water level in the tank is too low. Water Reservoir 1.5 m Note: O O O Level alarm P 1.5 m a. Determine the required height (m) of water in the reservoir that is needed to supply a water flowrate of 2.8 L/min to the laboratory experiment. All of the minor losses in the system are negligible The frictional losses associated with the reservoir and constriction segment are negligible The frictional loss for the length of plastic tubing is NOT negligible; the plastic tubing has the same roughness as drawn tubing.
A vented 50-gallon cylindrical reservoir (diameter = 18 inches) is used to supply ambient temperature (20 °C) water to a laboratory experiment. As shown in the accompanying figure, the water exits the reservoir via a port near the bottom. A 3 m length of flexible plastic tubing (internal diameter = 8 mm) is run horizontally with the tubing outlet at atmospheric pressure. A pressure transducer, affixed to the short constriction segment in the middle of the plastic tubing, is connected to an alarm system to notify the lab personnel when the water level in the tank is too low. Water Reservoir 1.5 m Note: O O O Level alarm P 1.5 m a. Determine the required height (m) of water in the reservoir that is needed to supply a water flowrate of 2.8 L/min to the laboratory experiment. All of the minor losses in the system are negligible The frictional losses associated with the reservoir and constriction segment are negligible The frictional loss for the length of plastic tubing is NOT negligible; the plastic tubing has the same roughness as drawn tubing.
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
Transcribed Image Text:QUESTION 5
A vented 50-gallon cylindrical reservoir (diameter = 18 inches) is used to supply ambient temperature (20 °C)
water to a laboratory experiment. As shown in the accompanying figure, the water exits the reservoir via a port
near the bottom. A 3 m length of flexible plastic tubing (internal diameter = 8 mm) is run horizontally with the
tubing outlet at atmospheric pressure. A pressure transducer, affixed to the short constriction segment in the
middle of the plastic tubing, is connected to an alarm system to notify the lab personnel when the water level in the
tank is too low.
a.
Water
Reservoir
Note:
1.5 m
O
O
O
Level alarm
P
Determine the required height (m) of water in the reservoir that is needed to supply a water flowrate of 2.8
L/min to the laboratory experiment.
1.5 m
All of the minor losses in the system are negligible
The frictional losses associated with the reservoir and constriction segment are negligible
The frictional loss for the length of plastic tubing is NOT negligible; the plastic tubing has the
same roughness as drawn tubing.

Transcribed Image Text:b. If the pressure transducer gives a reading of 98000 Pa-a at the desired flowrate of 2.8 L/min, determine the
inside diameter (mm) of the constriction segment.
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