Inderscience Publishers

Thermodynamic and exergy efficiencies of magnetocaloric energy conversion utilising industrial waste heat

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An investigation under which conditions industrial waste heat utilised with magnetic energy conversion machines can be a possible alternative to conventional energy conversion technologies is presented. The application of a numerical model leads to the thermodynamic efficiency, the exergy efficiency, and approximate values of the total mass and the total volume of a magnetic energy conversion machine. The exergy efficiency depends strongly on the magnetic field strength. A high frequency of operation reduces the mass and volume of a device. Magnetic energy conversion may beat conventional technologies, especially if large low–exergy heat sources are at ones disposal.

Keywords: magnetic energy conversion, exergy efficiency, thermodynamic efficiency, magnetocaloric energy conversion, industrial waste heat, numerical simulation, modelling

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