Design Issues and Future Perspectives for Magnetocaloric Energy Conversion - Magnetocaloric Energy Conversion: From Theory to Applications - page 347

Fig. 8.21 Application of the closed, two-pole rotating magnetic eld source with the application
of the ow in the azimuth direction and with the use of the bi-directional pump (a and b

denote different direction of the

fl uid fl

fl uid fl ow and different positions of the two pole rotating magnet,

shifted for the angle of 90 ° ), classi cation no: R20(3)1(5)(6)00101(12)

eld source.
Also in this case, the CHEX and HHEX are shown only because of the illustration.
Note again that only one of each type of heat exchangers (CHEX or HHEX,
respectively) is actually required.
Another option in rotating magnetic

This is shown in Fig. 8.22 , which relates to a four-pole magnetic

eld sources is to apply a uni-directional
pump and a valve system that serves for the fl uid- fl ow distribution and the

switching of the ow direction. In Fig. 8.23 , the system consists of two pairs

of CHEX and HHEX as well as two pairs of valve systems. These correspond to
each of the pairs of heat exchangers. Note that this case is shown only for illus-
tration purposes. Therefore, a single CHEX with a single valve system can be

fl uid- fl

Fig. 8.22 Application of a closed, rotating four-pole magnetic eld source, with the use of the bi-
directional pump and the azimuth flow of the working fluid (a and b denote different direction of
the fluid flow in AMRs and different positions of the four pole rotating magnet, shifted for the
angle of 45 ° ), classi cation no: R20(3)1(5)(6)00101(12)