Keywords: magnetic energy conversion, exergy efficiency, thermodynamic efficiency, magnetocaloric energy conversion, industrial waste heat, numerical simulation, modelling
Thermodynamic and exergy efficiencies of magnetocaloric energy conversion utilising industrial waste heat
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.