In many heat exchanger applications it is necessaryto extend the
surface of the tube to create an enhanced heattransfer capability.
Some methods of manufacture, such as vacuum brazing, do not
supportthe use of dissimilar materials and other methods such as
bulletexpansion are not always suitable for certain metals (such
astitanium due to their elastic cold forming properties) or tube
types(such as internally finned tubes). It is also sometimes
unacceptableto change the specification of the base tube through
deformation(increasing its size to create the mechanical bond with
Wire wound fins have limitations of material choice and the
contactcharacteristics of glued fins can impair heat transfer
Elfin is a Patented extended surface tube technology which utilises
a cold manufacturing process to mechanically bond the fins to the
tubes with great precision,effectively overcoming all of these
drawbacks. This process imparts certain unique advantages over
conventional construction methods, enabling the heat exchanger
design engineer to think outside the box” and gain a significant
One of the main attributes of ‘Elfin’ is the virtually limitless
choice of tube and fin materials that can be combined including
copper-alloys, aluminium, stainless steel, titanium etc.
There is no other product on the market today that can match the
unique attributes and exceptional versatility of Elfin at such an
affordable cost. With successes in the marine, power generation,
rail, compressor and chemical processing industries, 'Elfin' has
gained an enviable reputation for quality and flexibility.
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Elfin Finned Tubes Images