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Improved heat extraction from heat x tubes????

Improved heat extraction from heat x tubes????

Improved heat extraction from heat x tubes????

(OP)
Has anyone have altenative ways of increasing heat transfer from heat exchanger tubes.  I have had success with spiral turbulators but am looking for alternatives.  If anone has a contact or information on prebent finned tubing it would be greatly appreciated.  loking in the 1-2 inch diameter stainless steel(409).

RE: Improved heat extraction from heat x tubes????

I've used such pre-bent fins in a wax/hydrogen mix electric pre-heater made by Armstrong-Chemtec to our entire satisfaction. The bending enabled avoiding stratification.

Try

http://www.armstrong-chemtec.com/products5.htm

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