The master thesis deals with a numerical analysis of two models of graded active magnetic regenerators. Firstly, a general graded AMR model is taken into consideration. The number of MCM layers with equal length distribution was chosen to be 7. Then, in order to determine the effect of thermal insulation layer inserts, numerical adiabatic boundary conditions were inserted in the numerical model at the points where material changes. In this way, the upgraded model prevents solid thermal conductivity between layers.
The results are compared and insulation layers’ efficiency is presented. In the case of fluid flow period of 1 s, the maximum temperature span of the general AMR reaches 34,2 K, whereas the temperature span of the model with insulation inserts reaches 38,8 K, which is about 13% increase of temperature span.