Experimental and modeling results of a parallel plate-based active magnetic regenerator

被引：36

作者：

Tura, A. ^{[1
]}

Nielsen, K. K. ^{[2
,3
]}

Rowe, A. ^{[1
]}

机构：

[1] Univ Victoria, Dept Mech Engn, Inst Integrated Energy Syst, Victoria, BC V8W 2Y2, Canada

[2] Tech Univ Denmark, Dept Mech Engn, DK-2800 Lyngby, Denmark

[3] Tech Univ Denmark, Fuel Cells & Solid State Chem Div, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark

来源：

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2012年 / 35卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Gadolinium; Magnetocaloric effect; Active magnetic regenerator; Demagnetization; Magnetic refrigerator; Magnetic field; DEMAGNETIZATION TENSOR; COMPUTATION; FIELD; SHAPE;

D O I：

10.1016/j.ijrefrig.2012.04.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The performance of a permanent magnet magnetic refrigerator (PMMR) using gadolinium parallel plates is described. The configuration and operating parameters are described in detail. Experimental results are compared to simulations using an established two-dimensional model of an active magnetic regenerator (AMR). In particular, the effect of geometric demagnetization in the regenerator is included in a simplified manner. The model and experimental data are in good agreement while the effect of demagnetization is seen to degrade the performance. It is concluded from the experiments that both thinner plates and channels are needed in order to obtain both temperature spans and cooling powers comparable to those obtained with packed spheres. (c) 2012 Elsevier Ltd and IIR. All rights reserved.

引用

页码：1518 / 1527

页数：10

共 26 条

[1] Demagnetizing factors for rectangular ferromagnetic prisms [J].

Aharoni, A .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (06) :3432-3434

[2] A versatile magnetic refrigeration test device [J].

Bahl, C. R. H. ;

Petersen, T. F. ;

Pryds, N. ;

Smith, A. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2008, 79 (09)

[3] The effect of demagnetization on the magnetocaloric properties of gadolinium [J].

Bahl, C. R. H. ;

Nielsen, K. K. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (01)

[4] On the computation of the demagnetization tensor field for an arbitrary particle shape using a Fourier space approach [J].

Beleggia, M ;

De Graef, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 263 (1-2) :L1-L9

[5] DEMAGNETIZING FIELDS IN MAGNETIC MEASUREMENTS .1. THIN DISKS [J].

BRUG, JA ;

WOLF, WP .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (10) :4685-4694

[6]

Christensen D.V., J PHYS D IN PRESS

[7] Magnetic phase transitions and the magnetothermal properties of gadolinium [J].

Dan'kov, SY ;

Tishin, AM ;

Pecharsky, VK ;

Gschneidner, KA .

PHYSICAL REVIEW B, 1998, 57 (06) :3478-3490

[8]

Dragutinovic G.D., 1998, INT SERIES DEV HEAT, V4

[9] Thirty years of near room temperature magnetic cooling: Where we are today and future prospects [J].

Gschneidner, K. A., Jr. ;

Pecharsky, V. K. .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2008, 31 (06) :945-961

[10] Analysis of single blow effectiveness in non-uniform parallel plate regenerators [J].

Jensen, J. B. ;

Bahl, C. R. H. ;

Engelbrecht, K. ;

Elmegaard, B. ;

Pryds, N. .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2011, 54 (21-22) :4746-4751

← 1 2 3 →