Heat exchangers

Its high thermal conductivity, coupled with comparatively low cost and easeof working, makes aluminium the metal of preference wherever heating or coolingis required. By the use of foil gauges the maximum surface area and minimum metalcan be used to transfer heat. Aluminium foil allows a high level of energyefficiency within the smallest possible space. The metal’s low weight alsosaves the amount of structure needed to house or to carry aluminium-based heatexchange units.

Such considerations are important where, for example, the heat exchanger isused in aircraft, cars and trucks. Weight and space saved in all forms oftransport mean ‘knock-on’ efficiencies in fuel and vehicle capacity.

In homes, offices and factory buildings compact heating and airconditioning units allow the architect or designer great flexibility in thelocation and format of equipment. Alufoil offers a high level of corrosionresistance, so that no protective coating or finish is usually necessary andmaintenance is minimal.

Due to aluminium’s recyclability the used metal is available for re-useafter the heat exchange equipment has completed its useful lifespan. Bothstatic and mobile heating and cooling installations incorporate aluminium foil,making a significant contribution to efficiency and sustainability.

Typical Heat Exchange Applications for Alufoil

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For heating, de-humidifying and air conditioning systems, alufoil heatexchange units perform effectively in every climate, helping the occupants ofmodern buildings all over the world to work and live in comfort.

Cars and trucks

Automotive fin stock and brazing strip are highly engineered products,requiring superior gauge control capabilities, precise thickness and widthtolerances as well as exacting chemical and physical properties. Almost everyroad vehicle built today carries heat exchangers incorporating aluminium foil.Engines, oil coolers and climate control equipment all rely on the lightnessand conductivity of finned aluminium heat exchangers. They save weight, reducefuel demands and maximise the efficiency of each vehicle.

Aircraft and ships

Oil coolers, air conditioning units – everywhere that heat needs to bedissipated or enhanced – will usually incorporate an aluminium foil finned heatexchanger.


Food processing plants require freezer and refrigeration equipment for foodhygiene and safety. Wherever food is shipped, stored and sold there is a needfor efficient cooling. Display cabinets for chilled or frozen products are standardequipment for supermarkets. Alufoil is present in all of them.

Foil specifications

A range of aluminium alloys and dimensional specifications is available tomeet the technical demands of the design and production method involved. Inaddition to plain alloys, compatible with many joining techniques, special‘clad’ materials are available combining the formability and thermal propertiesof a base alloy with the surface durability and joining characteristics ofanother alloy.