Twisted tubes for heat exchangers

[KALEM09]

I would appreciate your suggestions in finding suppliers of twisted tubes. I know that Brown Fintubes/Koch has the patent to produce them, but I've heard that there are are suppliers too, therefore they are no longer protected.

 

[gr2vessels]

China, where else..! and no patent issues...

http://www.heat-exchanger-manufacturer.com/

Cheers,
gr2vessels

 

[moltenmetal]

Are you talking about corrugated tubes? If so, numerous manufacturers of heat exchangers use them. A company in Poland formerly known as Secespol is one example.

 

[KALEM09]

moltenmetal, I refer to Brown twisted tubes, see

http://www.brownfintube.com/products/tt_brochure/Page2.asp

 

[moltenmetal]

The Secespol tubes are multi-lead spiral corrugated. Same basic idea, just more intense.