At the heart of most Thermofin heat exchanger’s technology, like in our famous line of generator and motor coolers, lies Thermofin’s aluminum extruded finned tubes, the lead actors on which rests the efficiency and longevity of our units. Their particular design, mono or bimetal, provides great resistance (fin stiffness) as well as exceptional heat transfer characteristics (longevity, temperature, range, etc.). The mechanical bond joining liner tubes and aluminum wall offers superior durability and insures no corrosion occurs between the fins and the tubes, a key factor in permitting the delivery of the specified duty by your heat exchanger. Extend the lifetime of your exchangers and improve their efficiency and reliability by combining them with the best technology, the POWERFIN extruded finned tubes.
Generally, tubes equipped with surface enhancing devices, such as fins or grooves, are used where heat exchange is required between two fluids whose ability to transmit calories is very far apart. For a water / air exchange, for example, the local exchange coefficient on the water side is much higher than that on the air side. Thus, fins are added to the surface in contact with air in order to increase the density of the heat flux between the two fluids.
Being the only interface between the hot and cold source, the extruded finned tube is at the heart of heat transfer. Its quality plays a key role in the ability of an exchanger to efficiently transfer thermal energy between the two fluids. More precisely, the way in which the fin is secured to the tube affects the efficiency of the exchanger in the short, medium and long term.