Conference paper
Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials
In
Proceedings of the 6th Iif-iir International Conference on Magnetic Refrigeration
—
2014
Abstract
We quantify the effect of hysteresis on the performance of the magnetocaloric first order material Gd5Si2Ge2 undergoing an ideal active magnetic regenerator (AMR) cycle. The material is carefully characterized through magnetometry (VSM) and calorimetry (DSC) in order to enable an accurate model description of the phase transition at varying magnetic fields and temperatures.
Using detailed experimental property data, a Preisach type model is used to describe the thermal hysteresis effects and simulate the material under realistic working conditions. We find that the adiabatic temperature change is limited by a significant fraction of the thermal hysteresis.
| Language: | English |
|---|---|
| Publisher: | International Institute of Refrigeration |
| Year: | 2014 |
| Proceedings: | 6th IIR/IIF International Conference on Magnetic Refrigeration |
| Types: | Conference paper |
| ORCIDs: | Bahl, Christian R.H. , Nielsen, Kaspar Kirstein and Engelbrecht, Kurt |
