Heat exchanger coil - Practical limitations in coil diameter

[Arron_]

Does anyone know of a pressure vessel designer and fabricator that could coil 40NB SCH160 S31803 pipe to ~Ø500?
(And delivery to New Zealand)
Also looking for general advice on whether or not such a tight coil on that pipe size is even possible.

 

[Christine74]

I don't have experience with coils specifically but I know you can bend reasonably heavy-walled UNS S31803 tubing to a radius of of 1.5X the OD without issues. This is done routinely to make 2205 duplex U-tube bundles for heat exchangers with good results, although the tube material is typically thinner than what you're proposing.


-Christine

 

[EdStainless]

This is likely at the very limit of what can done with this wall.
If it is a small number of turns maybe, but I can't see doing a lot of turns this tight.
Are your pressures really that high?
This is 10,000psi pipe.
Lighter wall will improve heat transfer and make fabrication easier.

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P.E. Metallurgy, consulting work welcomed

 

[saron]

the wall thikness is too thick