Static Pressure in Transmission Lines - Understanding the Differences

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SUMMARY

The discussion focuses on the measurement of static pressure in transmission lines, specifically questioning the differences in readings when measuring from the top versus the bottom of a pipe with a diameter of 10 cm. A discrepancy of 300 pascals is noted, which is considered negligible compared to standard atmospheric pressure of 101,325 pascals. The conversation emphasizes the importance of the pressure measuring device's tolerance and accuracy, particularly near the limits of its range, and suggests applying Pascal's law to understand the pressure distribution better.

PREREQUISITES
  • Understanding of static pressure measurement techniques
  • Familiarity with Pascal's law and its applications
  • Knowledge of pressure measuring devices and their specifications
  • Basic principles of fluid dynamics in transmission lines
NEXT STEPS
  • Research the specifications and accuracy of various pressure measuring devices
  • Study Pascal's law in detail and its implications for fluid pressure in pipes
  • Explore methods to minimize measurement errors in static pressure readings
  • Investigate the effects of pipe orientation and fluid dynamics on pressure measurements
USEFUL FOR

Engineers, fluid dynamics specialists, and students studying mechanical or civil engineering who are involved in pressure measurement and analysis in transmission systems.

can12345
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Homework Statement


Is there any difference if I measure static pressure value from the down side of the pipe or up side of the pipe? I am getting an error just small as 300 pascal when I do zero measurement.
Here I draw the system also. The diameter of pipe is 10 cm. What could be the possible ideas to create 300 pascal differences?

Tranmission lines?
Air bubble?

Homework Equations

The Attempt at a Solution

 

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can12345 said:

Homework Statement


Is there any difference if I measure static pressure value from the down side of the pipe or up side of the pipe? I am getting an error just small as 300 pascal when I do zero measurement.
Here I draw the system also. The diameter of pipe is 10 cm. What could be the possible ideas to create 300 pascal differences?

Tranmission lines?
Air bubble?

Homework Equations

The Attempt at a Solution

It depends on what sort of tolerance your pressure measuring device is capable of obtaining.

A pressure of 300 pascals is nothing. Standard atmospheric pressure is 101,325 pascals.
 
can12345 said:
Is there any difference if I measure static pressure value from the down side of the pipe or up side of the pipe?
Of course. You've actually measured less than you should expect..Apply pascals law.
I assume this measurement is near the bottom of the range of your device? The data sheet will likely state accuracy is poorer near the upper and lower limits of your devices range.
 

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