Quote Originally Posted by NKrader View Post
if you look at the pictures you can see that it is a hybrid of both flat tubes and round tubes.

you can see "normal" finned rad behind the tubes.
You can see they do coiled heat exchangers with those finned tubes.
But the fins inside will promote water->copper heat transfer, alright. What about copper->air heat transfer ? Isnt that the most critical part for our applications ?