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Copper Fin Tubes

 

Low/Medium High Fin

Integral external fins giving increased external surface area. Used in condensers, evaporators, oil coolers, air coolers, air conditioning equipment. Typical sizes for low fin tubes are given in the table below, other sizes are possible. Medium high fins are available on tubes 15.88mm od to 22.22mm od, 10 to 11 fins per inch and fin heights up to 8mm. For additional details see page Low Fin Tubes or page Medium High Fin Tubes.

Low fin tube
Low and medium high fin tubes

 

Plain ends Finned section
Outside diameter
(D)
Wall thickness
(t)
Outside diameter
(df)
Wall thickness
(Tf)
Root diameter
(dr)
Fins/inch
12.7 1.7 12.7 1.24 9.6 16 - 40
15.88 1.7 15.88 1.24 12.7 16 - 40
19.05 1.7 19.05 1.24 15.88 16 - 40
22.22 1.7 22.22 1.24 19.05 16 - 40
25.4 1.75 25.4 1.24 22.22 16 - 40

 

Internal Fin

Integral internal copper fins of 2.5mm to 3mm height give improved heat transfer and excellent reistance to vibration. Used in water coolers, evaporators, refrigerators, air conditioning equipment. Typical sizes are given in the adjacent table, other sizes are possible.

Internal copper fin tube
Internal fin tubes

 

  Tube outside diameter
12.7 15.88 19.05 22.22
Tw 0.55 0.6 0.6 0.6
Hf 0.25 0.3 0.3 0.3
No of fins 60 80 92 112
Angle (β) 18 18 18 18
Angle (α) 40 40 40 40

 

Corrugated Fin

Internal and external spiral corrugated copper fins of 0.5mm to 1.5mm height create progressive turbulence giving a high degree of thermal conductivity. Particularly suitable for use in fluid to fluid, gas to gas heat exchange. Used in air conditioning exchangers and chiller units. Typical sizes are given in the table below, other sizes are possible.

Corrugated copper fin tube
Corrugated fin tube

 

Material Copper
Temper Hard, half hard, annealed
Outside diameter of plain ends (D) 9.53mm to 25.4mm
Thickness of plain ends (T) 0.5mm to 2.0mm
Pitch of corrugations (P) 3mm to 10mm
Depth of corrugations (H) 0.5mm to 1.5mm
Number of treads 1 to 3
Length (L) 500mm to 6000mm
The length of plain ends and interim lands to suit clients' requirements

 

Inner Star Fin

A thermal conduction tube in which aluminium moulded fins are annealed processed inside the copper tube to give increased surface area. Used in evaporators and condensers on chiller units. Typical sizes are given in the table below, other sizes are possible.

Inner star fin tube
Inner star fin tube

 

Material outer tube Copper half hard
Material fin Aluminium alloy
Outside diameter 16mm to 19mm
Tube thickness 0.8mm to 1.0mm
Number of fins 5 or 10
Length Up to 8000mm
End rebate To suit clients' requirements

 

High Performance CH-B

A tube having integral external fins 26 to 40 fins per inch and increased fin height with a trapezoidal shape plus integral internal fins. Used in codensers, double type heat exchangers. Typical sizes are given in the table below, other sizes are possible.

High performance CH-B tube
High performance CH-B tube

 

Plain End Fin Details Finned Section
Outside diameter (Do) Wall thickness (Tw) Fins/inch (A) No. of ridges Depth of ridges Outside diameter (Df) Root diameter (Dr) Wall thickness Fin height (Fw)
19.05 1.25 26 10 0.3 18.8 16.4 0.6 1.2
19.05 1.25 33 30 0.3 18.8 16.4 0.6 1.2
19.05 1.25 40 38 0.3 18.8 16.4 0.6 1.2

 

High Performance EH-B

A tube having integral external fins 42 fins per inch with fine openings in the external skin and circumferential tunnels plus integral internal fins. Used in condensers. Typical sizes are given in the table below, other sizes are possible

High performance EH-B tube
High performance EH-B tube

 

Plain End Fin Details Finned Section
Outside diameter (Do) Wall thickness (Tw) Fins/inch (A) No. of ridges Depth of ridges Outside diameter (Df) Root diameter (Dr) Wall thickness Fin height (Fw)
19.05 1.25 42 38 0.35 18.5 15.8 0.6 0.64
18.88 1.20 42 30 0.35 18.15 15.6 0.6 0.64

 

 

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Last updated: 21/01/07
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