Fins are basically external surfaces on tube for
increasing the surface area of the bare tube, resulting in a
compact Heat Exchanger.
The method of attaching the fins over tube is of prime
importance, since even a slightest air gap between the tube
and fins will defeat the whole purpose of fins over the
tube.
Considering the above facts Heft has indigenously designed and
developed a special purpose tube fining machine capable of
producing following types of finned tubes.
HEFT was formed in 1994 to provide the service to
petrochemicals, power generation, chemicals, pharmaceuticals
industries with high quality HELICAL WOUND FINNED HEAT
EXCHANGERS tubing used in the maintenance and manufacture of
the air cooled heat exchangers, air heaters & other related
heat exchangers.
Finned tubes are able to even out the heat transfer between
the inside of the tube and the outside. When the heat transfer
coefficient on the outside of the tube is significantly lower
than the heat transfer coefficient on the inside of the tube,
there is a major advantage to incorporate fins on the outside
tube surface to take full advantage of the high heat transfer
rate on the inside of the tube.
By using a finned tube with eight times as much surface on the
outside of the tube, the total length of the tube required for
heating the viscous oil can be reduced by one sixth, Fins are
basically external surface on tube for increasing the surface
area of the bare tube, resulting in a compact heat
exchanger.
