TY - JOUR
T1 - A comprehensive parameter study of an active magnetic regenerator using a 2D numerical model
AU - Nielsen, Kaspar Kirstein
AU - Bahl, Christian Robert Haffenden
AU - Smith, Anders
AU - Pryds, Nini
AU - Hattel, Jesper Henri
PY - 2010
Y1 - 2010
N2 - A two-dimensional numerical heat transfer model is used to investigate an active magnetic regenerator (AMR) based on parallel plates of magnetocaloric material. A large range of parameter variations are performed to study the optimal AMR. The parameters varied are the plate and channel thicknesses, cycle frequency and fluid movement. These are cast into the non-dimensional units utilization, porosity and number of transfer units (NTU). The cooling capacity vs. temperature span is mapped as a function of these parameters and each configuration is evaluated through the maximum temperature span and exergy. The results show that the optimal AMR should have a utilization in the range 0.2–1 and an NTU higher than 10 and not necessarily more than 30. It is concluded that parallel plate-based regenerators face significant challenges in terms of manufacturability. However, the benefit of parallel plate regenerators is a very low pressure drop, which is needed for high performance.
AB - A two-dimensional numerical heat transfer model is used to investigate an active magnetic regenerator (AMR) based on parallel plates of magnetocaloric material. A large range of parameter variations are performed to study the optimal AMR. The parameters varied are the plate and channel thicknesses, cycle frequency and fluid movement. These are cast into the non-dimensional units utilization, porosity and number of transfer units (NTU). The cooling capacity vs. temperature span is mapped as a function of these parameters and each configuration is evaluated through the maximum temperature span and exergy. The results show that the optimal AMR should have a utilization in the range 0.2–1 and an NTU higher than 10 and not necessarily more than 30. It is concluded that parallel plate-based regenerators face significant challenges in terms of manufacturability. However, the benefit of parallel plate regenerators is a very low pressure drop, which is needed for high performance.
KW - Magnetic refrigeration
KW - Fuel Cells and hydrogen
KW - Magnetisk køling
KW - Brændselsceller og brint
U2 - 10.1016/j.ijrefrig.2009.12.024
DO - 10.1016/j.ijrefrig.2009.12.024
M3 - Journal article
SN - 0140-7007
VL - 33
SP - 753
EP - 764
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
IS - 4
ER -