A numerical comparison of a parallel-plate AMR and a magnetocaloric device with embodied micro thermoelectric thermal diodes

作者：Tomc Urban; Tusek Jaka; Kitanovski Andrej^*; Poredos Alojz

来源：International Journal of Refrigeration, 2014, 37: 185-193.

DOI：10.1016/j.ijrefrig.2013.07.003

• Magnetic refrigeration
• Active magnetic regenerator
• Thermal diodes
• Effet Peltier
• Heat transfer

This article introduces a novel heat-transfer mechanism for magnetocaloric energy conversion based on the introduction of thermoelectric thermal diodes. These can provide the very rapid transport of heat from/to the magnetocaloric material. For the purposes of the study, a new mathematical-numerical model has been developed. The model serves for dynamic heat-transfer simulations and an estimation of the cooling characteristics of magnetocaloric devices, which apply thermal diodes. Micro Peltier elements were considered as the thermal diodes. A theoretical analysis was performed in order to compare the performance of a parallel-plate active magnetic regenerator with a magnetocaloric device that uses thermal diodes. The results show the great potential for magnetocaloric devices with thermal diodes, especially in terms of an increased operating frequency and specific cooling powers.

• 出版日期2014-1