Environmental Engineering Reference
In-Depth Information
Table 7.4 First reciprocating device from the Batou Research Institute of Rare Earths
Name and address of institute
Baotou Research Institute of Rare Earths. Address:
No. 36, Huanghe Street, RE High-Tech Zone, Baotou,
Inner Mongolia, P.R. China, 014030
Name of contact person/email
Jiaohong Huang/jiaohongh@sina.cn
Year of production
2002
-
2004
Type
Reciprocating
Maximum frequency
0.16 Hz
Maximum cooling power
35 W
Maximum temperature span
17.8 K
Type of AMR
2
×
350 g packed bed
MC material(s)
Gd irregular particles, 0.5
1mm
-
Type of magnets
Reciprocating permanent magnet Nd
-
Fe
-
B 1.5 T
0.85 mm. The two AMRs were applying a single material, one with Gd and
the other based on the La
-
Fe
-
Co
-
Si
-
B material (T
c
= 291 K). The third was a
two-layer AMR based on La
-
Fe
-
Co
-
Si
-
B material. The masses of the two
La
B-based AMRs were 580 g, each. The mass of the Gd AMR was
785 g. In the case of the AMR consisting of Gd, the 1 %Na(OH) solution in water was
used as a heat-transfer
-
Fe
-
Co
-
Si
-
fl
uid, whereas in the AMR consisting of La
Fe
Co
Si
B the
-
-
-
-
heat-transfer
uids
to prevent corrosion. All three AMRs were compared in relation to the maximum no-
load temperature span achieved. The highest temperature span of 15.3 K was
obtained by the two-layered La
fl
uid was a mixture of Na
2
MoO
4
,Na
3
PO
3
, NaCr
2
O
7
and Na
2
SiO
3
fl
Fe
Co
Si
B-based AMR, whereas in the AMR with
-
-
-
-
the single-material La
B, the maximum temperature achieved was
12.7 K. The performance of the Gd-based AMR was poorer, with only 8.1 K of
maximum temperature span.
Fe
Co
Si
-
-
-
-
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