I need to cool oil passing through copper tubes with water. For more surface area, I am planning to make copper tubes spiral. Whether spiral copper tubes will be available readily or do we need to turn it manually? If manual, any suggestions please?
Perhaps an interesting approach would be to make an initial prototype using additive manufacturing technologies, the solution may not be ideal for the production of large series, but as proof of concept is may well suit.
The people from Materialise offer several 3D printing services in a wide set of materials and using several technologies. Directly from the computer-aided design geometry, a prototype can be ready in some hours and functional trials to some extent can be carried out.
Use copper tube benders. If you don't have one just ask the people were you have bought the copper tube. They will do it according to your specifications with little extra charge.
Bending the copper tube in a perfect spiral is very difficult if do it by hand. One problem is kinking and second one is strain hardening. You could use the method shown in above video.
There is one cheap little trick you can use to avoid kinking. Fill the whole tube with salt(yes table salt and sugar won't do) and seal both the ends. There should not be any voids and whole tube should be filled in completely. Now you can bend it without kinking it and drain the salt after you are done.
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Dear Niyas Hakeem.
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Tip: Look carefully at the video proposed by Raja Bhushan not forgetting to ward off the tubes at the end of the process for fluid to pass between them and also follow the recommendations of Veerendra Prasad.
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Solutions are not always the most elaborate sophisticated and expensive are the best!
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