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P&ID symbol for concentric pipes.

P&ID symbol for concentric pipes.

P&ID symbol for concentric pipes.

(OP)
I am designing some components to develop a core-annular flow within a circulating system to study multi-phase flow.  I was wondering what the P&ID symbol for a smaller pipe within a larger pipe would be.  The larger pipe is 12 inches, and the smaller pipe would be either 6 or 8 inches.  

Thanks

I.A.A.

RE: P&ID symbol for concentric pipes.

I have seen depictions for jacketed pipe.  Even if you find something graphical, consider a note that describes the requirements.

RE: P&ID symbol for concentric pipes.

I have not seen that on a P&ID.

Having said that, nothing prevents you from coming up with a new symbology/depiction for such an arrangement.

Sorry can't be of much help.

"Do not worry about your problems with mathematics, I assure you mine are far greater."   
Albert Einstein
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RE: P&ID symbol for concentric pipes.

Probably you'd need two P&IDs with a large note indicating that one must be read in conjunction with the other. The only similar thing I've had experience with is a shrouded tuyere, but that wasn't a whole piping system.

Wow, I just found it, neat:

http://patents1.ic.gc.ca/details?patent_number=2150455

Paul

RE: P&ID symbol for concentric pipes.

(OP)
I think that I will come up with my own symbols and notation.  When I figure them out, I will post them.  Thanks for all your help.

IAA

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