Welltech Cooling Systems

The spiral fin tube economizer is a newly type heat transfer equipment, consisting of spiral fin tubes to overcome the serious abrasion and short service time.Which consisted of  series of spiral finned tubes, the headers of inlet and outlet, bend, frame and other auxiliaries

Structure arrangement: in line/staggered arrangement

Features

1. The equipment body can be designed into many modules to ensure the long term and stable running.

2. Compact structure which can enlarge the heat exchanging area in order to add the heat transfer area and less leakage.

3. Improve the heat transfer efficiency.

4. Structure arrangement: In line or staggered arrangement.

• The process create tension joint & the result is wound formed finned tube with 75% fin-to-tube bond providing better efficiency, maximum operating temperature for this fin type is 250°C.Base tube of finned tubes can be SS, CS, Corrosion resistance steel, Copper, Copper alloys. We provide common sizes from 25 mm to 50 mm outer dia of fin tubes with 5 to 9 FPI.

• To be able to transfer heat well, the Finned Tube or pipe material must have adequate thermal conductivity.
• Heat energy transfer is increased by the effective fin area on the tube or pipe.
• The heat exchanger tube material will thermally expand differently at various temperatures, therefore, thermal stresses will be present along the heat exchanger.
• Additionally, stress will be induced by any high pressures from the applicable fluids.
• The tube and fin material should be galvanically compatible with all heat exchanger components and fluids for extended service periods under all operating conditions (temperatures, pressures, pH , etc.).
• These requirements require careful selection of material which is: strong, thermally-conductive, and corrosion-resistant.
• The fin effectiveness in transferring a given quantity of heat is defined by: Fin efficiency = (Actual Heat Transferred) / (Heat which would be transferred in entire fin area were at base temperature).

Aluminium fins are formed from a bimetallic tube consisting of a base tube and an aluminium muff tube. The fins are formed on a cold rolling process from the wall thickness of the aluminium muff tube. Extruded fin gives very good corrosion protection to the base tube, as the base tube is not visible to the atmosphere inbetween the fins.