Innovations have a long tradition in the field of aluminium heat exchanger brazing. Major technology steps from chloride- to vacuum- and Nocolok®-brazing as well as to the latest fluxless brazing technologies have been accompanied by continuous development and improvement of rolled and extruded aluminium products, fluxes, furnace technologies and manufacturing techniques. Ongoing drivers are competition in costs, properties and quality. Often exhaust standards and new regulations act as additional drivers for innovations in this field. The main traditional application fields for brazed AI heat exchangers are cars and trucks with combustion engines. The upcoming technologies like batteries or full cells are another driver for innovation. In addition new applications such as windmills, non-mobile HVAC&R solutions and solar heat are drivers too. New manufacturing technologies like nanocoating and 3D-manufacturing techniques are innovation drivers and have the potential to act as game changing technologies. New viewpoints like bionic thinking can inspire new approaches like fractal geometries, easily wettable surfaces, brazing foams or copying the elk-heads cooling system. Aluminium brazing may be subject to new demands and boundary conditions, when alternative physical principals are applied. The magnetocaloric effect as well as the thermoelectric production of current might be important boundary setting principles in the long term. Finally the energy transition in different countries like Germany will push recycling loops for aluminium, the development of energy storage techniques and solutions for energy efficiency in buildings.
Innovations in aluminum heat exchanger brazing - current drivers and inspirations
2014
10 Seiten, Bilder, Quellen
Conference paper
English
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