Environmental Engineering Reference
In-Depth Information
Table 7.37 Rotary magnetocaloric devices built to date, listed with their general characteristics
Authors, reference
Year
AMR type, materials, mass Magnet assembly type
and magnetic
eld
strength
Heat transfer fluid
Frequency Temperature
span
Speci
c cool-
ing power
1
Kirol and Dacus [
42
]
1987
Gd plates, 0.076 mm,
0.126 mm spacing, 270 g
Static Nd
-
Fe
-
B, 0.9 T Water
N/A
N/A
N/A
2
Zimm et al. [
43
,
44
]
2005
Gd particles, 0.425
-
0.5 mm Static permanent, 1.5 T Water
4 Hz
18 K
no-load
0.5 K
44 W (no
mass reported)
Gd
-
Er particles,
0.25
-
0.355 mm, Gd parti-
cles, 0.425
-
0.5 mm
25 K
No-load
0.5
41 W (no
mass reported)
3
Shir et al. [
47
]
2005
Gd powder
Permanent, 2 T
Helium
N/A
5 K
No-load
4
Zimm et al. [
45
]
2007
Gd plates, 916 g
Rotating Halbach Nd
-
-
Fe
-
B, 1.5 T
N/A
2 Hz
11.5 K
No-load
76.4 W kg
−
1
8 K
240.2 W kg
−
1
0 K
5
GE, Table
7.16
2012
N/A
Two dual Halbach
N/A
4 Hz
(max)
50 K (max)
100 W (max,
no mass
reported)
1,375 W kg
−
1
6
Jacobs et al. [
46
]
2014
Layered La-Fe
-
Si-H parti-
cles, 0.177
-
0.246 mm,
1520 g
Rotating Halbach Nd
-
-
Fe
-
B, 1.5 T
Water + anti-corrosion agent
4 Hz
12 K
2,001 W kg
−
1
0 K
7
Bohigas et al. [
48
]
2000
Gd thin ribbon
Static Nd
-
Fe
-
B, 0.95 T Olive oil
0.33 Hz
5 K
No-load
10 W kg
−
1
8
Okamura et al. [
49
]
2005
Layered Gd-Y, Gd
-
Dy
spheres, 0.6 mm, 1000 g
Rotating Nd
-
Fe
-
B, 0.77
T
Water
3.33 Hz
1 K
37.5 W kg
−
1
9
Okamura et al. [
50
]
2007
Gd spheres, 0.5 mm, 4000 g Rotating Nd
-
Fe
-
B, 1.1 T Water
3.33 Hz
5.2 K
10
Hokakaido Ins.,
Table
7.19
2009
Gd, Gd alloy packed bed
Permanent (neodymium) N/A
45 Hz
(max)
5.5 K (max)
150 W (max,
no mass
reported)
11
Kobe Uni., Table
7.20
2011
Gd packed bed
Permanent, 0.6 T
N/A
1 Hz
5 K (max)
10 W (max,
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