Overview of Existing Magnetocaloric Prototype Devices - Magnetocaloric Energy Conversion: From Theory to Applications - page 287

Table 7.13 Reciprocating (linear) magnetocaloric devices built to date, listed with their general characteristics
Authors, reference Year AMR type, materials, mass Magnet assembly type and magnetic Heat transfer fl uid Frequency Temperature

span

Speci c cooling power

eld strength

1 Brown [ 1 ] 1976 Gd plates, 1 mm, Stirling-like

cycle

Superconducting, 7 T 80 % water, 20 % ethyl

alcohol

N/A 47 K No-load

2 Green et al. [ 3 ] 1990 1/3 Tb, 1/3 Gd/Tb, 1/3 Gd

rolled ribbons, 500 g

Superconducting, 7 T Nitrogen gas 0.0143 Hz 24 K No-load

4 W kg − 1 20.5 K

10 W kg − 1 5 K

200 W kg − 1

3 Zimm et al. [ 4 ] 1998 Gd spherical particles,

0.15

Superconducting, 1.5 and 5 T Water N/A 9 K (5 T)

- 0.3 mm, 3,000 g

70 W kg − 1 7 K (1.5 T)

4 Blumenfeld et al. [ 5 ] 2002 Gd spheres 0.2 mm, 64.6 g Superconducting, 1.7 T Water 0.017 Hz 23 K No-load

12.4 W kg − 1 18 K

46.4 W kg − 1

0.034 Hz 13.5 K

8.8 W kg − 1

5 Shassere et al. [ 6 ] 2012 Gd sheets, 1 mm, spacing

0.5 mm, 475 g

Electro, 0.75 T Water + ethylene glycol 0.17 Hz 5.6 K

6 Rowe and Barclay

[ 7 ]

2002 Gd packed

bed

125 g Nb - Ti superconducting, 2 T Helium 0.2 - 1.2 Hz 13 K No-load

250 g 18 K

375 g 20 K

Richard et al. [ 8 ] 2004 Gd flakes, 180 g 16 K No-load

5.6 W kg − 1 14 K

Gd fl akes, 90 g, Gd Tb fl akes, 20 K No-load

-

80 g

11.8 W kg − 1

14 K

Rowe and Tura [ 9 ] 2006 Gd, Gd - Tb, Gd - Er, 270 g 44 K (1.5 T) No-load

50 K (2 T) No-load

Arnold et al. [ 10 ] 2011 Gd particles, 66 g, Gd Er par- Nb Ti superconducting <5 T 33 K (2 T) No-load

- -

ticles, 70 g

110.3 W kg − 1 0 K (2 T)

59 K (5 T) No-load

274.1 W kg − 1

0 K (5 T)

45.5 W kg − 1 7 Hirano et al. [ 11 ] 2002 Gd spheres, 0.3 mm, 2,200 g Superconducting, <4 T Water 0.167 Hz 23 K (4 T)

18.2 W kg − 1 11 K (1 T)