Un conditionnement d'air magnétocalorique destiné à un véhicule électrique.

Résumé d'une communication présentée lors de la 7e Conférence internationale sur le froid magnétique à température ambiante, disponible sur Fridoc.
Two main topics were addressed in the 72 papers presented during Thermag VII conference: magnetocaloric materials (alloys and compounds with magnetocaloric effect, physics of the magnetocaloric effect, shaping and preparation of active materials) and magnetic cooling systems (theory, design and numerical aspects, experimental tests of machines and prototypes, permanent
magnets and assemblies). The present conference also paid attention to a couple of novel topics: ferroic materials (electrocalorics, barocalorics, etc.) and heat switches, which may represent promising research themes for the future. We present below the summary of a paper along with the direct link where the paper can be downloaded in Fridoc database.

In their presentation*, B. Torregrosa-Jaime et al analyse the application of a permanent-magnet active magnetic regenerator refrigerator (AMRR) in the air-conditioning (AC) system of an electric vehicle. A comprehensive optimisation study has been performed in order to determine the design and working parameters of the AMRR that fulfil the thermal requirements of the vehicle with minimum combined electric consumption and total mass. With the obtained designs, the AMRR would weigh between 20 and 50kg and would work with an EER from 2 to 4 and a COP (coefficient of performance in heating mode) from 2 to 3.5, similar to the current vapour-compression technology. The efficiency of the AMRR depends on the considered design point, which is determined by the settings of the electrical auxiliaries. As the efficiency of the AMRR increases, the consumption of the auxiliaries becomes more relevant. In order to determine the design that minimizes the total energy consumption of the AC system, all the components must be taken into account.

*Torregrosa-Jaime B, Payá J, Corberán JM. (2016). Integral optimization of a magnetocaloric air-conditioning system for an electric vehicle. Paper presented at the 7th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VII), Turin, Italy.