Test Results on a 50K Magnetic Refrigerator

Zimm, C. B.; Johnson, J.W.; Murphy, Richard

doi:10.1007/978-1-4613-0373-2_210

Cited by 17 publications

(6 citation statements)

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“…Magnetic refrigeration has been used in gas liquefaction systems [3], cryogenic applications [4], and is a candidate for room temperature commercial and industrial refrigeration and air conditioning processes [5]. Magnetic materials research for room temperature magnetic refrigeration has been conducted [6,7] and application projects of magnetic refrigeration have been demonstrated [8][9][10][11] at various institutions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of room temperature magnetic regenerative refrigeration

Shir

Mavriplis

Bennett

et al. 2005

International Journal of Refrigeration

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Section: Introductionmentioning

confidence: 99%

Analysis of room temperature magnetic regenerative refrigeration

Shir

Mavriplis

Bennett

et al. 2005

International Journal of Refrigeration

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“…The actual situation is such that several ''green'' devices have been constructed to cool down from room temperature using magnetic materials. [3][4][5][6] The broad spectrum of materials that may work as refrigerants covering the temperature range from 4 K to room temperature is associated with the possibility of getting ferro and ferrimagnetic materials ordered in such temperature regime. [7][8][9][10] In the range of the hydrogen and helium liquefaction temperatures, superparamagnetic materials showing blocking temperatures in this interval, compete with ferro and ferrimagnetic materials.…”

mentioning

confidence: 99%

“…1 using superparamagnetic clusters and the recent very important discoveries by Pecharsky and Gschneider 2 . The actual situation is such that several "green" devices have been constructed to cool down from room temperature using magnetic materials [3][4][5][6] . The broad spectrum of materials that may work as refrigerants covering the temperature range from 4 K to room temperature is associated to the possibility to get ferro and ferrimagnetic materials ordered in such temperature regime [7][8][9][10] .…”

mentioning

confidence: 99%

Giant and time-dependent magnetocaloric effect in high-spin molecular magnets

Torres

Hernández

Bohigas

et al. 2000

Applied Physics Letters

114

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We have measured and calculated the magnetocaloric effect in macroscopic samples of oriented high-spin molecular clusters like Mn 12 and Fe 8 as a function of the temperature and both the intensity and the sweeping rate of the applied magnetic field.We have observed a high magnetic entropy variation around the blocking temperature of the magnetic moment of molecules and calculated the shift of the entropy variation and cooling temperature, with the sweeping rate of the magnetic field.

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“…It was confirmed that AMR cycle worked around 20 K [5]. An AMR refrigerator was tested around 50 K by Astronautics group [10].…”

Section: Introductionmentioning

confidence: 82%

Numerical analysis of active magnetic regenerators for hydrogen magnetic refrigeration between 20 and 77K

et al. 2011

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A model active magnetic regenerator refrigerator (AMR) with the Braytonlike operation cycle was analyzed by numerical cycle simulation in the temperature range between 20 and 77K. In order to study the performance using magnetic material with various transition temperatures T c , entropy of magnetic material with second order phase transition was calculated using mean field theory and Debye approximation. The cooling performance is shown to be high when the heat exhaust temperature is close to the transition temperature. It is shown that the optimized operation condition depends on both T c and operation temperatures. Multi-layered AMR beds were shown to improve the performance of AMR. Muti-stage AMR was also discussed.

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Test Results on a 50K Magnetic Refrigerator

Cited by 17 publications

References 1 publication

Analysis of room temperature magnetic regenerative refrigeration

Analysis of room temperature magnetic regenerative refrigeration

Giant and time-dependent magnetocaloric effect in high-spin molecular magnets

Numerical analysis of active magnetic regenerators for hydrogen magnetic refrigeration between 20 and 77K

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