Environmental Engineering Reference
In-Depth Information
Table 7.25 Rotary magnetic prototype from Grenoble Electrical Engineering Laboratory
Name and address of institute
Grenoble Electrical Engineering Laboratory
Name of contact person/email
Afef Kedous-Lebouc/Afef.lebouc@g2elab.grenoble-inp.fr
Year of production
2008
Type
Rotary
Maximum frequency
0.5 Hz
Maximum cooling power
60 W
Maximum temperature span
10 K
Type of AMR
Parallel plates
MC material(s)
Gd
Type of magnets
Nd - Fe - B
(a) Design of the prototype, (b) Photo of the prototype, (c) Regenerator, (d) Hydraulic circuit
management
a peak magnetic
eld of 1.54 T and it was designed in a manner so that the inner
cylinder induced half of the total high-
eld intensity, whilst the outer cylinders each
induced one-quarter of the high
eld. Furthermore, a novel check-valve con
gu-
'
ration was implemented to minimize the
fl
uid
s dead volumes. The heat-transfer
fl
lled
with Gd spherical particles with an average diameter of 0.5 mm. However, for the
initial test the total amount of Gd was 420 g, while later 650 g of Gd was applied.
The maximum no-load temperature span when using 650 g of Gd was 33 K,
operating at 0.8 Hz, while when using 420 g of Gd the maximum no-load
uid was a mixture of 80 % water and 20 % glycol. The two AMR beds were
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