Overview of Existing Magnetocaloric Prototype Devices - Magnetocaloric Energy Conversion: From Theory to Applications - page 303

Table 7.22 Rotary magnetic prototype from Sanden Co. Inc
Name and address of institute Sanden Co., Inc.

Name of contact person/email [e-mail]

Year of production 2013

Type Rotary

Maximum frequency 3 Hz

Maximum cooling power 200 W

Maximum temperature span 13.8 K

Type of AMR Packed bed

MC material(s) Gd, Gd alloy, 1,273 g

Type of magnets Permanent, 0.85 T

7.2.6 Canadian Prototypes

The rst Canadian rotary magnetic refrigeration prototype was built at the Uni-

versity of Victoria and presented in 2007 at the Second International Conference on
Magnetic Refrigeration at Room Temperature in Portoro , Slovenia by Tura and

Rowe [ 54 ]. The device consisted of two stationary AMRs and two Nd

ž

B
Halbach cylindrical magnet assemblies. Both cylindrical magnet assemblies had the
outer rings stationary, while the inner ring rotated. Such a magnet assembly could
induce a maximum magnetic

Fe

- -

eld of 1.47 T. The AMRs cycled in the opposite
phases, which allowed for operating frequencies up to 4 Hz. The fl uid fl ow oscil-

lated by a uid was

water. The device had two hot heat exchangers for each AMR, while the cold heat
exchanger was shared by both AMRs. Both AMR beds were

fl uid displacer with a crank mechanism. The heat-transfer fl

lled with Gd crushed
particles with a diameter of 0.6 mm. The total mass of both AMRs was 122 g.