Performance Analysis of the Regenerative Brayton Refrigeration Cycle Using Gd0.94Er0.06 as the Working Substance

Wang Yuan; Gildas Diguet; Guo Xing Lin; Jin Can Chen

doi:10.4028/www.scientific.net/AMR.631-632.318

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 631-632Performance Analysis of the Regenerative Brayton...

Performance Analysis of the Regenerative Brayton Refrigeration Cycle Using Gd_0.94Er_0.06 as the Working Substance

Abstract:

Based on the experimental data of entropy change varying with temperature, the regenerative Brayton refrigeration cycle using Gd_0.94Er_0.06 as the working substance is set up for magnetic field changes with 0-1T and 0-2T. By using thermodynamic analysis method, some parameters such as the non-perfect regeneration, net cooling quantity, coefficient of performance (COP), and so on, are analyzed and calculated. The effects of temperature of the heat reservoir, regeneration and external magnetic field are also discussed. The results obtained in the present paper show that the refrigeration cycle operating in T_C=T₀, T_H= T₀+7_K and 0-2T magnetic field change has not only maximum cooling quantity but also maximum COP in all the established magnetic refrigeration cycles, and can provide some new guide for the optimal design of real room-temperature magnetic refrigerators.

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Advanced Materials Research (Volumes 631-632)

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318-321

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.631-632.318

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Online since:

January 2013

Authors:

Wang Yuan, Gildas Diguet, Guo Xing Lin, Jin Can Chen

Keywords:

Cycle Performance, Magnetic Material, Non-Perfect Regeneration, Refrigeration

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