Natural Gas Line Temperature Distribution

[sailoday28]

For gas line flow losses is isothermal flow the norm?. If not, what thermal considerations are given in determining fluid flow hydraulic losses?

Regards

 

[JLSeagull]

Underground pipeline, pipe rack, distance?

 

[sailoday28]

Any info would suffice.
Regards

 

[vzeos]

sailoday28,
In gas line flow analyses, the isothermal "assumption" is the norm where the gas temperature is assumed to be the average gas temperature, however it be determined.

The attached paper may be helpful.

http://www.energy-solutions.com/pdf/tech_paper_Modisette_Pipeline_Thermal.pdf

 

[dcasto]

for long lines with hot gases going in, you'll need to do heat loss calculations. Break the line into 1/2 miles sections with Tin Tout.

 

[MortenA]

agree with the last post

Pipelien studio (and HYSYS etc.) can do this for you, including pipes in free air, water or duried.

Best regards

Morten