Overview of Existing Magnetocaloric Prototype Devices - Magnetocaloric Energy Conversion: From Theory to Applications - page 308

Table 7.27 Second rotary magnetic prototype from the University of Victoria
Name and address of institute Mechanical Engineering, University of Victoria

Name of contact person/email Andrew Rowe/[e-mail]

Year of production 2012

Type Rotary

Maximum frequency 2 Hz

Maximum cooling power 80 W

Maximum temperature span 33 K

Type of AMR Spheres, plates, particulate, microchannel

MC material(s) Gd, Mn Fe As P

− − −

Type of magnets Triple Halbach, 0.1 - 1.45 T

The device consisted of a rotating AMR wheel and a stationary Nd Fe B Halbach

- -

magnet assembly. The magnet assembly had two 1.5 T magnetic eld areas. The

AMR wheel consisted of 36 sectors, which were lled with Gd particles of 0.5 mm in

diameter. The total mass of the magnetocaloric material was 1,000 g. The heat-
transfer

uid was water. The maximum no-load temperature span was approximately
11.5 K, while at approximately 6.8 K of temperature span the device could produce
40 W kg − 1 of speci

fl

c cooling power. A schematic of the prototype and some
additional characteristics are also presented in Table 7.28 . Furthermore, in 2005, a
second magnetic prototype was built at Sichuan University. The photograph of the
second magnetic device and some characteristics are presented in Table 7.29 .
The second prototype was built at the Technical Institute of Physics and
Chemistry from the Chinese Academy of Sciences and was presented in 2013 by