TY - JOUR
T1 - Detailed numerical modeling of a linear parallel-plate Active Magnetic Regenerator
AU - Nielsen, Kaspar Kirstein
AU - Bahl, Christian Robert Haffenden
AU - Smith, Anders
AU - Bjørk, Rasmus
AU - Pryds, Nini
AU - Hattel, Jesper Henri
PY - 2009
Y1 - 2009
N2 - A numerical model simulating Active Magnetic Regeneration (AMR) is presented and compared to a selection of experiments. The model is an extension and re-implementation of a previous two-dimensional model. The new model is extended to 2.5D, meaning that parasitic thermal losses are included in the spatially not-resolved direction.
The implementation of the magnetocaloric effect (MCE) is made possible through a source term in the heat equation for the magnetocaloric material (MCM). This adds the possibility to model a continuously varying magnetic field.
The adiabatic temperature change of the used gadolinium has been measured and is used as an alternative MCE than mean field modeling. The results show that using the 2.5D formulation brings the model significantly closer to the experiment. Good agreement between the experimental results and the modeling was obtained when using the 2.5D formulation in combination with the measured adiabatic temperature change.
AB - A numerical model simulating Active Magnetic Regeneration (AMR) is presented and compared to a selection of experiments. The model is an extension and re-implementation of a previous two-dimensional model. The new model is extended to 2.5D, meaning that parasitic thermal losses are included in the spatially not-resolved direction.
The implementation of the magnetocaloric effect (MCE) is made possible through a source term in the heat equation for the magnetocaloric material (MCM). This adds the possibility to model a continuously varying magnetic field.
The adiabatic temperature change of the used gadolinium has been measured and is used as an alternative MCE than mean field modeling. The results show that using the 2.5D formulation brings the model significantly closer to the experiment. Good agreement between the experimental results and the modeling was obtained when using the 2.5D formulation in combination with the measured adiabatic temperature change.
KW - Loss
KW - Magnetic field
KW - Magnetic refrigeration
KW - Fuel Cells and hydrogen
KW - Magnetic refrigerator
KW - Heat
KW - Simulation
KW - Modeling
KW - Magnetisk køling
KW - Brændselsceller og brint
U2 - 10.1016/j.ijrefrig.2009.03.003
DO - 10.1016/j.ijrefrig.2009.03.003
M3 - Journal article
SN - 0140-7007
VL - 32
SP - 1478
EP - 1486
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
IS - 6
ER -