Numerical study of thermomagnetic cycle

Morgan Almanza (1) , Alexandre Pasko (1) , Frédéric Mazaleyrat (1) , Martino Lobue (1)

1 SATIE-MME - Matériaux Magnétiques pour l'Energie

We estimate the efficiency and power of a thermal energy harvesting thermodynamic cycle using a magnetocaloric material as active substance. The thermodynamic cycle is computed using an equation of state, either extrapolated from experimental data or deduced using a phenomenological Landau model. The magnetic work is then compared to the maximum work. Afterwards power is estimated using a simple thermal exchange model. Simulations of different cycles for different working points illustrate the tradeoff between power and efficiency.

Mots clés: magnetocaloric materials; thermal energy harvesting; thermomagnetic cycle; simulation

Domaines: Energie électrique; Matériaux; Electromagnétisme

Morgan Almanza, Alexandre Pasko, Frédéric Mazaleyrat, Martino Lobue. Numerical study of thermomagnetic cycle. Journal of Magnetism and Magnetic Materials, 2016, ⟨10.1016/j.jmmm.2016.11.058⟩. ⟨hal-01400798⟩