 |
|
A) Finned Tubes:
|
CONTINUOUS
SPIRAL CRIMPED FINS
These types of fins are semi-crimped and wrapped under tension
around the outside of the base tube. Fins are either tack welded or
brazed to the base tube at each end of the tube. These finned tubes
can be further HOT DIPPED GALVANISED for surface protection where as
the deposition of Zinc also adds up to the efficiency of finned
tubes.
Maximum Operating Temperature-250 0 C:
|
|
| a) Base Tube Diameter |
: |
5/8’’ to 3” (15.8 mm to 76.2 mm) |
| Tube Material |
: |
Carbon Steel / Stainless Steel / Copper /
Cupro-Nickel |
| b) Fin Material |
: |
Carbon Steel / Stainless Steel / Copper / Aluminium / Brass |
| Fin Height |
: |
¼’’ to ¾’’ (6.4 mm to 20 mm) |
| Fin Pitch |
: |
3fins/inch to 11 fins/ inch (118 fins/meter to 433
fins/meter) |
| Application |
| Commercial Application for Air Heating OR Air Cooling up to
1300 C to 1500 C using Steam / Thermic Fluid / Hot Water as Heating Media
OR Water as Cooling Media |
|
| |
|
CONTINUOUS SPIRAL ‘G’ TYPE FINS |
|
The
strip is tension wound into a machined groove over the base tube
material. This ensures maximum heat transfer at high temperature.
Maximum operating Temperature-450
0
C:
| a) Fin Material |
: |
Aluminum
/ Carbon Steel |
| Fin Height |
: |
1/2’’
to 5/8’’ (12.7 mm to 15.87 mm) |
| Fin Pitch |
|
8fins/inch to 11 fins/ inch (316 fins/meter to 433 fins/meter) |
|
|
|
b) Base Tube Diameter |
: |
3/4’’ to 2” (19.05 mm to 50.8 mm) |
|
Tube Material |
: |
Carbon Steel / Stainless Steel |
Application |
| More
specifically used in Air Cooled Exchangers OR Condensers |
| |
|
|
CONTINUOUS SPIRAL ‘L’ TYPE FINS |
|
The
formation of ‘L’ base of the strip under tension gives optimum
contact of the ‘L’ base on the base to improve the heat transfer
efficiency. Whereas the ‘L’ base also gives considerable corrosion
protection to the base tube
Maximum
operating Temperature - 300
0
C:
| a) Fin Material |
: |
Carbon Steel / Copper |
|
b) Tube Material |
: |
Carbon
Steel / Stainless Steel / Copper |
|
|
|
SQUARE & RECTANGULAR FINS |
|
Single
tube or Double tube rectangular fins are also manufactured as per
customers requirements. Due to rectangular shape it offers are large
surface area compared to the Spiral Finned tubes
Application
Due to
larger surface area available, these finned tubes are used mostly in
Air Heating application to reduce the overall size of the equipment.
Maximum operating Temperature - 300
0
C:
|
|
| a)
Fin Material |
: |
Carbon Steel / Stainless Steel / Aluminium / Copper |
|
Fin Size |
: |
70mm
x 40mm / 76mm x 38mm |
|
b) Tube Material |
: |
Carbon Steel, Stainless Steel, Copper |
| Tube
Size |
: |
5/8” – ¾” (15.87mm – 19.05mm) |
|
|
WIRE WOUND FINNED TUBES (ROOT SOLDERED) |
|
These
finned tubes have fins made of wire instead of strips. Continuous
loops of wire are formed and are continuously soldered to the
circumference of the tube to ensure 100% contact. Loops per turn and
turns per foot can be altered as per surface area requirements. Due
to continuous soldering of wire loops these finned tubes offer a
very high heat transfer efficiency with less air pressure drop.
Maximum Operating Temperature-175
0 C:
| a)
Tube Diameter |
: |
5/8’’ to 1” (15.8 mm to 25.4 mm) |
|
Tube Material |
: |
Carbon
Steel / Stainless Steel / Copper / Cupro-Nickel |
|
|
|
b) Wire Material |
: |
GI
Wire / Stainless Steel Wire / Copper Wire |
|
Wire Thk. |
: |
0.7mm |
|
Loops per Turn |
: |
58
– 90 Nos. per turn. |
|
Turns per foot |
: |
36
– 66 Turns per foot. |
|
Application |
|
Used in air cooled Oil Coolers in thermo Pac units and also used
for Air Heating applications |
|
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