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Why does "in general" the gas velocity should be under 40 m/s? Laminar/turbulent flow? It is very far from the speed of sound that might cause any sort of undesirable effects
@@LeeeJim it is related to the pressure. The original formula for normal volume flow rate and actual volume flow rate is (normal means at 273.15 kelvin and approx 100 000 pascal): Q = Q0 * (Z * T * p0) / ( Z0 * T0 * p) Z and Z: are compressibility and normal compressibility, not considered in this video The 0.1 in the formula (in the video) is due to p being in MPa and to p0 not being explicitly included in the formula.
@@Imsama123 0.1 is related to the pressure. The original formula for normal volume flow rate and actual volume flow rate is (normal means at 273.15 kelvin and approx 100 000 pascal): Q = Q0 * (Z * T * p0) / ( Z0 * T0 * p) Z and Z: are compressibility and normal compressibility, not considered in this video The 0.1 in the formula (in the video) is due to p being in MPa and to p0 not being explicitly included in the formula.
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What is 0.1 in formula, Also What is 273.15 in denominator?
Great video. Have been searching for this! Thanks
may i know how to get 120 Nm3/hr in velocity of gas ? or it is assumption ?
Hello, great video but why use the minimum operating pressure?
Hello sir. Where did you get the recommended gas velocity? does this apply to compressed air too?
For 3/4 NPS SCH160 , Gas velocity is 24 m/s. Therefore pipe size is also recommended.
What is the inner diameter ?
@@zayedaljabri5454 0.0155
Please keep making these videos
How to calculate velocity of a power plant chimny by stack kit
Recommended velocity less than 25 m/s? How the value is taken?
Improper explained
Gas velocity ~ 16, 3/4" is also recommended for this application
i got this value too, i got 15.47 m/s
battling with how you got 0.01184 for 1/2'' NPS Schedule 160 and 0.0207 for 1''
Kindly make more videos
Thanks very much.
What about natural gas with mixture component c1, c2, c4, c5, h2s..@ high pressure for example 15~24 bar
You can use same method
Very informative.. Thanks
Why does "in general" the gas velocity should be under 40 m/s?
Laminar/turbulent flow?
It is very far from the speed of sound that might cause any sort of undesirable effects
Noise and pipe erosion. Pressure drop is also usually too much. Actually for a more optimum economy for long distances, 20 to 30m/s is even better.
What mean of cubeak gas line
What about gas compressible factor
Thank you so much. But where does 273.15 and 0.1 came from?
I just found 273.15 is absolute zero. What about 0.1 value sir?
@@LeeeJim it is related to the pressure. The original formula for normal volume flow rate and actual volume flow rate is (normal means at 273.15 kelvin and approx 100 000 pascal):
Q = Q0 * (Z * T * p0) / ( Z0 * T0 * p)
Z and Z: are compressibility and normal compressibility, not considered in this video
The 0.1 in the formula (in the video) is due to p being in MPa and to p0 not being explicitly included in the formula.
@@LeeeJim 1 atm. From combined gas law.
Thank you
please what is the name of the actual flow rate equation
Combined gas law
may i know which reference these formulas came from?
what is 3600 and 0.1 in the formula?
@@Imsama123 hour unit was converted into seconds = 1 hour = 3600 seconds
@@Imsama123 0.1 is related to the pressure. The original formula for normal volume flow rate and actual volume flow rate is (normal means at 273.15 kelvin and approx 100 000 pascal):
Q = Q0 * (Z * T * p0) / ( Z0 * T0 * p)
Z and Z: are compressibility and normal compressibility, not considered in this video
The 0.1 in the formula (in the video) is due to p being in MPa and to p0 not being explicitly included in the formula.
273.15 ? why the value came
temperature is in kelvin unit
its a saver thanks
For 3/4" line size Velocity = 23.09m/s
How to calculate inner dia
You can Google it.. Or use pipe data app from playstore
Gas velocity =23.13 m/s
23.13 m/s