Magnoric

Michel Risser

Christian Muller

Zoé Till

Frédéric Marrazzo

The invention relates to a magnetocaloric generator includes a set of porous active elements based of MCM materials, and a magnetic arrangement. The magnetic arrangement includes two superposed magnetic rotors, namely an external magnetic rotor and an internal magnetic rotor delimiting an air gap between them, and includes one same number of magnetic poles. The set of active elements includes a stator disposed in said air gap. The active elements extending axially in said stator enable a two-directional axial circulation of a heat-transfer fluid between a hot end and a cold end of said generator. The external magnetic rotor is advantageously coupled, on the one hand, to an electrical machine by a mechanical coupling, and on the other hand, to said internal magnetic rotor by a magnetic coupling, such that said rotors move in one same direction of rotation and are magnetically synchronous.

Magnetocaloric generator

A machine for converting thermal energy originating from waste heat deposits into electrical energy. It uses the magnetic phase transition properties of certain materials when they are exposed to a temperature variation with respect to their Curie temperature. The machine includes a magnetothermal converter provided with a fixed stator provided with active elements made of the materials, and a mobile rotor provided with magnetic poles and non-magnetic poles. The machine includes a closed fluidic circuit of heat-transfer fluid, coupled with two thermal sources of different temperatures by means of heat exchangers and with the stator to transfer thermal energy collected in the active elements. A synchronization system makes it possible to expose the active elements to alternating thermal cycles to generate a permanent magnetic imbalance between the rotor and the stator, and generate a displacement of the rotor, creating mechanical energy that can be converted into electrical energy.

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Oberhaslach, France

Michel Risser