A review of magnetic refrigerator and heat pump prototypes built before the year 2010

Yu, Bo; Liu, Min; Egolf, Peter W.; Kitanovski, Andrej

doi:10.1016/j.ijrefrig.2010.04.002

Cited by 449 publications

(230 citation statements)

References 55 publications

(63 reference statements)

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“…It has been suggested that high frequency AMR devices will allow for higher cooling power per mass of magnetocaloric material and temperature spans (Yu et al, 2010). Most of the developed magnetic refrigerators work with permanent magnets and gadolinium (Gd) as magnetocaloric regenerative bed.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical results of a high frequency rotating active magnetic refrigerator

Lozano

Engelbrecht

Nielsen

et al. 2014

International Journal of Refrigeration

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Experimental results for a recently developed prototype magnetic refrigeration device at The Technical University of Denmark (DTU) were obtained and compared with numerical simulation results. A continuously rotating active magnetic regenerator (AMR) using 2.8 kg packed sphere regenerators of commercial grade gadolinium (Gd) was employed. With operating frequencies up to 10 Hz and volumetric flow rates up to 600 L/h, the prototype has shown high performance and the results are consistent with predictions from numerical modelling. Magnetocaloric properties of the Gd spheres were obtained experimentally and implemented in a one-dimensional numerical AMR model that includes also the parasitic losses from the prototype. The temperature span for a thermal load of 200 W as a function of frequency was measured and modelled. Moreover, the temperature span dependence on the cooling capacity as a function of cycle frequency was determined. It was found that thermal losses increase as the frequency increases. Therefore, a detailed study of these parasitic losses was carried out experimentally and numerically.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical results of a high frequency rotating active magnetic refrigerator

Lozano

Engelbrecht

Nielsen

et al. 2014

International Journal of Refrigeration

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“…A Plexiglas tube contains the regenerator and two pistons which ensure the movement the heat transfer fluid (water). (see review [10] for photos).…”

Section: Rm Apparatusmentioning

confidence: 99%

Development of a new magnetocaloric material used in a magnetic refrigeration device

Guillou

Legait

Kedous‐Lebouc

et al. 2012

EPJ Web of Conferences

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Abstract. Testing directly a magnetocaloric material in a magnetic refrigeration (MR) system is the best way to judge of its applicative potentialities. In this spirit, an oxide expected to show promising magnetocaloric properties around room temperature (Pr 0.65 Sr 0.35 MnO 3 ) was produced in large scale and shaped in order to build a regenerator. Magnetization, heat capacity, resistivity, thermal conductivity and a direct test in a MR device were carried out on this manganite. The results were compared to those observed in the reference material which is Gadolinium. The two main conclusions of these preliminary results are: (i) the Pr 0.65 Sr 0.35 MnO 3 actually displays not only a significant magnetocaloric effect but also a real refrigeration capability at room temperature; (ii) the temperature spans reached in these first experiments are even found to well compare with those obtained with Gd.

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“…Since the first magnetic refrigeration system manufactured by Brown in 1976, many researchers around the world have paid considerable attention to the magnetic refrigeration around room temperature and consecutively developed some interesting systems (Bouchekara, 2008) (Yu, 2010) (Bjørk, 2010). This section reviews -in detail -some of the magnetic refrigeration systems available until now.…”

Section: Magnetic Refrigeration Systemsmentioning

confidence: 99%

Magnetic Refrigeration Technology at Room Temperature

Bouchekara¹,

Nahas²

2012

Trends in Electromagnetism - From Fundamentals to Applications

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A review of magnetic refrigerator and heat pump prototypes built before the year 2010

Cited by 449 publications

References 55 publications

Experimental and numerical results of a high frequency rotating active magnetic refrigerator

Experimental and numerical results of a high frequency rotating active magnetic refrigerator

Development of a new magnetocaloric material used in a magnetic refrigeration device

Magnetic Refrigeration Technology at Room Temperature

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