The paper deals with the optimization of manufacturing of cast metal foams and possibilities of using of this specific material. It is focused on castings from aluminum alloy with a regular arrangement of internal cells. The optimization relates to already used casting technologies - production of metal foams using sand cores. Casting of metal foams has a wide range of applications such as: automotive, aerospace, construction, energy. They have unique properties thanks to reduced weight with sufficient strength and they are used e.g. for: absorbing impact energy or heat conduction. In this article we deal with the usage of the metal foam as a heat exchanger. The shape and size of heat exchanger depending on its effectiveness by using a simulation program is solved.Keywords: Metal foam, 3D modelling, heat exchanger, heat conduction, efficiency
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