Magnetic Field Sources - Magnetocaloric Energy Conversion: From Theory to Applications - page 87

Fig. 3.45 An example of
bar-shaped magnets
providing an ON and OFF
magnetic eld to two pairs
of AMR beds (see also
Bouchekara et al. [ 59 ])

An example of a magnet assembly for a linear (reciprocate) device is shown in
Fig. 3.46 [ 60 ]. This magnet assembly consists of four Nd B magnets, which,

together with the body of soft iron, provided 1.15 T in the gap. The magnet
assembly is attached to a mechanical system, and therefore, it moves over the static
AMR. A better solution would be to use a pair of AMRs in order to provide

Fe

- -

Fig. 3.46 The magnet assembly consisted of four permanent magnets with a soft iron guide for the
magnetic fl ux. This magnet assembly was used for a linear experimental device by Tu š ek et al.

[ 60 ]