Finned Tubes
What Are the Different Kinds Of Finned Tubes?
At Turnbull & Scott we have the experience and manufacturing capability to make numerous types of finned tube. The main differences occur from the choice of manufacturing process and metal combinations.
Plate fin tubes (or baseboard) are manufactured by a process of stamping tube size holes in a metal strip. A tube or tubes are then inserted through the hole in a large number of plates. An expander is then fired through the tube such that the tube diameter expands and forms a strong bond with the plate and collar The collar is created during the stamping process such that the distance between the plates (the pitch) can be predetermined as part of the design process. This pitch, or density of plates over tube length, will be a major influence on the thermal efficiency of the heat exchanger. Plate fin tubes are particularly suited towards mixed metals as there is no welding involved. Most commonly we use copper/aluminum as this is the optimum metal mix to achieve the greatest thermal transfer efficiency.
Spirally Wound Steel Gilled Tube is more suited to more robust metals where stamping and expender bullets may be ineffective. Thus Gilled Tube provides the perfect all-purpose extended surface Heat Transfer medium of great strength to withstand all nominal system temperatures and pressures. Our special purpose gilling machines wind a metal strip onto the tube in a continuous spiral under considerable tension. Again the fin height and pitch can be determined in the design stage such that almost any temperature transfer can be achieved within any dimensional restriction..The gilling process results in a perfect mechanical bond with excellent heat transfer from tube to fin using the most robust of steel or stainless steel combinations. This allows us to produce finned tubes, and subsequently heat exchangers which can operate at exceptionally high temperatures and in the harshest of environments.
What Are the Potential Applications Of Finned Tubes?
Turnbull & Scott manufacture a variety of Heat Exchangers from our finned tubes and are also happy to supply finned tubes to OEM's and for refurbishment purposes. Typically we build, or supply finned tube for:
Cooled Heat Exchangers
Oil Coolers
Gas Coolers
Charge Air Coolers
Fluid Coolers
Air Heaters
Inter Coolers
After Coolers
Condensers
Air Coolers
Cooling Coils
Heating Coils
Dehumidifiers
Heat Pipes
What are the Features of Turnbull & Scott's Finned Tube?
-
Sizes 15mm to 100mm Nominal Bore
-
ASTM A106/API 5L
-
Manufactured from Steel Tube to B.S. 1387 – Medium or Heavy
-
All Steel continuous gilling
-
Plain, Screwed Tube ends or flanged
-
Painted or Galvanised finish
-
Perfect mechanical bonding of gills onto pipe
-
Any Length up to 6 meters