TY - JOUR

T1 - Two-dimensional mathematical model of a reciprocating room-temperature Active Magnetic Regenerator

A1 - Petersen,Thomas Frank

A1 - Pryds,Nini

A1 - Smith,Anders

A1 - Hattel,Jesper Henri

A1 - Schmidt,Henrik Nikolaj Blicher

A1 - Knudsen,Hans-Jørgen Høgaard

AU - Petersen,Thomas Frank

AU - Pryds,Nini

AU - Smith,Anders

AU - Hattel,Jesper Henri

AU - Schmidt,Henrik Nikolaj Blicher

AU - Knudsen,Hans-Jørgen Høgaard

PB - Elsevier Ltd.

PY - 2008

Y1 - 2008

N2 - A time-dependent, two-dimensional mathematical model of a reciprocating Active Magnetic Regenerator (AMR) operating at room-temperature has been developed. The model geometry comprises a regenerator made of parallel plates separated by channels of a heat transfer fluid and a hot as well as a cold heat exchanger. The model simulates the different steps of the AMR refrigeration cycle and evaluates the performance in terms of refrigeration capacity and temperature span between the two heat exchangers. The model was used to perform an analysis of an AMR with a regenerator made of gadolinium and water as the heat transfer fluid. The results show that the AMR is able to obtain a no-load temperature span of 10.9 K in a 1 T magnetic field with a corresponding work input of 93.0 kJ m−3 of gadolinium per cycle. The model shows significant temperature differences between the regenerator and the heat transfer fluid during the AMR cycle. This indicates that it is necessary to use two-dimensional models when a parallel-plate regenerator geometry is used.

AB - A time-dependent, two-dimensional mathematical model of a reciprocating Active Magnetic Regenerator (AMR) operating at room-temperature has been developed. The model geometry comprises a regenerator made of parallel plates separated by channels of a heat transfer fluid and a hot as well as a cold heat exchanger. The model simulates the different steps of the AMR refrigeration cycle and evaluates the performance in terms of refrigeration capacity and temperature span between the two heat exchangers. The model was used to perform an analysis of an AMR with a regenerator made of gadolinium and water as the heat transfer fluid. The results show that the AMR is able to obtain a no-load temperature span of 10.9 K in a 1 T magnetic field with a corresponding work input of 93.0 kJ m−3 of gadolinium per cycle. The model shows significant temperature differences between the regenerator and the heat transfer fluid during the AMR cycle. This indicates that it is necessary to use two-dimensional models when a parallel-plate regenerator geometry is used.

U2 - 10.1016/j.ijrefrig.2007.07.009

DO - 10.1016/j.ijrefrig.2007.07.009

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

IS - 3

VL - 31

SP - 432

EP - 443

ER -