SET Proceedings 2978-4387 Caravel Press 10.65582/set.2010.019 2010.019 Investigation on the performance characteristics of Ericsson refrigeration cycles based on Gd5Si2Ge2, Gd and MnFeP0.45As0.55 ZhuangXiaoling ChenJincan LinGuoxing gxlin@xmu.edu.cn Department of Physics, Xiamen University, Xiamen 361005, P. R. of China 24082010 9 978-1-995850-04-7 1 7 24 August 2010 © 2010 Copyright WSSET 2010

Based on the experimental characteristics of the iso-field heat capacity and the magnetic entropy changing with temperature for the room-temperature magnetic refrigeration materials Gd5Si2Ge2, Gd and MnFeP0.45As0.55, the corresponding entropy versus temperature curves are presented and the Ericsson refrigeration cycles using these materials as the working substance are set up. The nonperfect regeneration quantity, net cooling quantity, released heat quantity, coefficient of performance and other parameters of the magnetic Ericsson refrigeration cycle are analyzed and calculated. Furthermore, the performance characteristics of the Ericsson refrigeration cycles employing the materials Gd5Si2Ge2, Gd and MnFeP0.45As0.55 as the working substance are evaluated and compared. Moreover, the influence of nonperfect regeneration on the performance of the magnetic Ericsson refrigeration cycle is revealed. The conclusions obtained may provide some theoretical references for the optimal design of room-temperature magnetic refrigerators.

 Room-temperature magnetic refrigeration Ferromagnetic material Ericsson refrigeration cycle Regeneration 24 to 27 August 2010 9th International Conference on Sustainable Energy Technologies SET2010 9 Shanghai, China