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Friction loss of pipe consisting two heating pipe inside it

Friction loss of pipe consisting two heating pipe inside it

Friction loss of pipe consisting two heating pipe inside it

(OP)
Hello, i am a chemical engineer, and now i am facing quite an unique case in my opinion. An asphalt is flowing through 20" pipe, where there is two 8" heating pipe inside the 20" pipe.
It is not an ordinary annulus in my opinion.

Is there a method to determine the asphalt friction loss? because what i found from many handbook, most of them only explain friction loss in concentric annulus.

Thanks
pipe
 

RE: Friction loss of pipe consisting two heating pipe inside it

Most fluid flow references have a section on non-circular ducts.  Use that.

Good luck,
Latexman

RE: Friction loss of pipe consisting two heating pipe inside it

If its not circular and concentric, you may be able to substitute the hydraulic radius in place of the usual pipe diameter in many of the typical friction loss formulas.

http://virtualpipeline.spaces.msn.com

"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain

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