Impact of the initial field on the thermodynamic performance of room-temperature magnetic refrigeration cycle

2013 ◽  
Vol 36 (8) ◽  
pp. 2395-2402 ◽  
Author(s):  
Gildas Diguet ◽  
Guoxing Lin ◽  
Jincan Chen
Keyword(s):  
Room Temperature ◽  
Magnetic Refrigeration ◽  
Refrigeration Cycle ◽  
Initial Field ◽  
Thermodynamic Performance ◽  
Room Temperature Magnetic Refrigeration

Performance Characteristics of a Magnetic Ericsson Refrigeration Cycle Using La(Fe0.88Si0.12)13H1 or Gd as the Working Substance

2013 ◽  
Vol 631-632 ◽  
pp. 322-325 ◽  
Author(s):  
Jun Yi Wang ◽  
Gildas Diguet ◽  
Guo Xing Lin ◽  
Jin Can Chen
Keyword(s):  
Numerical Calculation ◽  
Room Temperature ◽  
Magnetic Refrigeration ◽  
Performance Characteristics ◽  
Coefficient Of Performance ◽  
Refrigeration Cycle ◽  
Regenerative Heat ◽  
Heat Quantity ◽  
Room Temperature Magnetic Refrigeration

Based on the experimental characteristics of iso-field entropy varying with temperature for the room-temperature magnetic refrigeration material La(Fe0.88Si0.12)13H1 or Gd, the regenerative Ericsson refrigeration cycle using La(Fe0.88Si0.12)13H1 or Gd as the working substance is established and their thermodynamic performances are evaluated and analyzed. By means of numerical calculation, the influence of non-perfect regeneration on the main thermodynamic performances of the cycle is revealed and discussed. Furthermore, the coefficient of performance (COP), non-perfect regenerative heat quantity, and net cooling quantity of the Ericsson refrigeration cycle using La(Fe0.88Si0.12)13H1 or Gd as the working substance are compared. The results obtained show that it is beneficial to the cooling quantity of the cycles using La(Fe0.88Si0.12)13H1 or Gd as the working substance to operate in the region of Tcold >T0 and, at the condition of a same temperature span, the cooling quantity for La(Fe0.88Si0.12)13H1 is larger than that for Gd.

Modeling of Magnetic Refrigeration Device by Using Artificial Neural Networks Approach

2021 ◽  
Vol 10 (4) ◽  
pp. 68-76
Author(s):  
Younes Chiba ◽  
Yacine Marif ◽  
Noureddine Henini ◽  
Abdelhalim Tlemcani
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Room Temperature ◽  
Magnetic Refrigeration ◽  
Coefficient Of Performance ◽  
Refrigeration Cycle ◽  
Multiple Linear Regressions ◽  
Artificial Neural ◽  
Experimental Data Collection ◽  
Linear Regressions

The aim of this work is to use multi-layered perceptron artificial neural networks and multiple linear regressions models to predict the efficiency of the magnetic refrigeration cycle device operating near room temperature. For this purpose, the experimental data collection was used in order to predict coefficient of performance and temperature span for active magnetic refrigeration device. In addition, the operating parameters of active magnetic refrigerator cycle are used for solid magnetocaloric material under application 1.5 T magnetic fields. The obtained results including temperature span and coefficient of performance are presented and discussed.

scholarly journals Progress of room temperature magnetic refrigeration technology

2017 ◽  
Vol 66 (11) ◽  
pp. 110701
Author(s):  
Li Zhen-Xing ◽  
Li Ke ◽  
Shen Jun ◽  
Dai Wei ◽  
Gao Xin-Qiang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Magnetic Refrigeration ◽  
Room Temperature Magnetic Refrigeration

The Magnetic Entropy Changes in Gd1-xCrx Alloys

2005 ◽  
Vol 475-479 ◽  
pp. 2267-2270 ◽  
Author(s):  
Song Ling Huang ◽  
Dun Hui Wang ◽  
Zhi Da Han ◽  
S.K. Ren ◽  
Zheng Hua Su ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Room Temperature ◽  
Magnetic Refrigeration ◽  
Magnetic Entropy ◽  
Entropy Changes ◽  
Arc Melting ◽  
Magnetic Refrigerant ◽  
Room Temperature Magnetic Refrigeration ◽  
High Level ◽  
Curie Temperatures

A series of Gd1-xCrx (x=0.01,0.03,0.05 and 0.07) alloys have been prepared by arc melting. After introducing a small quantity of Cr into Gd, the Curie temperatures of these alloys increase. Magnetic entropy changes at the Curie temperature of Gd1-xCrx (x=0.01, 0.03, 0.05) alloys are nearly the same as that of Gd. However, compared with Gd, the magnetic entropy changes of Gd1-xCrx (x=0.01, 0.03, 0.05) alloys remain at a high level in a wider temperature range. So Gd1-xCrx (x=0.01, 0.03, 0.05) alloys are more suitable as magnetic refrigerant to be used in Ericsson Recycle for room temperature magnetic refrigeration. Our results and the fact that Cr is quite cheaper than Gd, suggest that Gd1-xCrx alloys maybe utilized as refrigerant in room temperature magnetic refrigeration.

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