Aluminium Cooler | Shell & Tube Heat Exchanger | Heating/Cooling Coils | Fin Tube

Our fin tubes with secondary or extended surfaces are now universally recommended to reduce the overall size and types of heat exchangers, particularly when dealing with difficult or dissimilar fluids. When one of the fluids has low conductivity or high viscosity, which reduces the heat transfer capability, it is necessary to increase the surface offered to this fluid to compensate for its deficiency.

Secondary surface can be provided in a variety of ways, both on the outside and inside of tubes. However, the high efficiency external finned tube in the following forms.

Wire Fin is a efficiency tube consisting of a series of elongated wire loops, spirally wound on to the tube wall and held in a position with a binding wire at the base of the loops. The loops and binding wire are then soft soldered to the tube wall to give the optimum surface for specific heat transfer and pressure drop requirement. The wire loops secondary surface give excellent heat transfer characteristic because of its ability to promote for boundary layer formation, maximum operating temperature for this fin type is 250°C.

The fin is wound into a machined groove and securely locked into place by back filing with base tube material. This ensures that maximum heat transfer is maintained at high tube metal temperatures. Maximum operating temperature for this fin type is 450°C.

 

 

We can offer rapid delivery of low fin tube for use in situations where extended surface is required, but lack of space or heat exchanger type dictates otherwise. Integral fin tube produced by form rolling a plain thick wall tube. The rolling process a high strength fin with the plain ends remaining in the original condition suitable for expanding, welding, or brazing into headers. For shell & tube applications the outside diameter of the plain ends is larger than over the fins diameter. Material selection can be Carbon Steel, Stainless Steel or Copper based Alloys. Low fin tube ca be ordered bent into U-tubes if required.

The strip material is subjected to controlled deformation under tension giving the optimum contact pressure of the foot of the fin onto the base tube thus maximizing heat transfer properties. The foot of the fin considerable enhances the corrosion protection of the base tube. Maximum operating temperature for this fin type is 150°C.

 

Double ‘L’ fin is used on applications requiring additional protection to the surface of the base tube. It is similarly produced to the fogging ‘L’ fin but has a wider fin base, which is overlapped during the winding process. Maximum operating temperature for this fin type is 175°C.

 

 

This fin type is a non-taper fin wrapped under tension around the base tube. The finning process results in a crimp forming at the foot of the fin. Fin is then welded to the base tube at the strip ends. Maximum operating temperature for this fin type is 150°C.