Study on the Heating Performance of a Cascade Active Magnetic Regenerator Based on Numerical Simulation

Yu Haoxian Yuan Xiaoliang Wu Jianghong

doi:10.12465/issn.0253-4339.20250329001

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Study on the Heating Performance of a Cascade Active Magnetic Regenerator Based on Numerical Simulation

更新时间：2025-11-07

- Study on the Heating Performance of a Cascade Active Magnetic Regenerator Based on Numerical Simulation
- Journal of Refrigeration Pages: 1-8(2025)
- 作者机构：
  
  华南理工大学机械与汽车工程学院广州 510641
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(52276008)
- DOI：10.12465/issn.0253-4339.20250329001
  CLC： TB61⁺1;TB657.5
- CSTR：XXXXX.XX.XXX.20250329001
- Received：29 March 2025，
  
  Revised：2025-04-27，
  
  Accepted：13 May 2025，
  
  Published Online：07 November 2025，
- 稿件说明：
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余浩贤,苑晓亮,巫江虹.基于数值分析的复叠式主动磁回热器制热性能研究[J].制冷学报,

Yu Haoxian Yuan Xiaoliang Wu Jianghong.Study on the Heating Performance of a Cascade Active Magnetic Regenerator Based on Numerical Simulation[J].Journal of Refrigeration,
余浩贤,苑晓亮,巫江虹.基于数值分析的复叠式主动磁回热器制热性能研究[J].制冷学报, DOI：10.12465/issn.0253-4339.20250329001. CSTR： XXXXX.XX.XXX.20250329001.

Yu Haoxian Yuan Xiaoliang Wu Jianghong.Study on the Heating Performance of a Cascade Active Magnetic Regenerator Based on Numerical Simulation[J].Journal of Refrigeration, DOI：10.12465/issn.0253-4339.20250329001. CSTR： XXXXX.XX.XXX.20250329001.

摘要

为打破室温磁制冷与磁热泵系统在室温附近的应用瓶颈，建立了复叠式主动磁回热器一维数值模型，从制热性能的角度研究其关键影响参数。仿真结果表明：换热流体流量越大，热端温度越快达到稳态，且无负荷温跨随流量先增大后减小，制热量随流量的增大而增大。此外，缩短加退磁和流动时间可显著提升制热量及无负荷温跨，在1-1-1-1 s运行时序下，制热量及无负荷温跨最高分别可达55.2 W和29.9 K。当LaFeSiH居里温度间隔增大时，无负荷温跨先增大后减小，最大值在居里温度间隔为6 K时取得，为40.2 K。在4种填充长度比例中，制热性能最好的比例为2∶2∶2∶2∶7，其最大无负荷温跨为31.2 K，最大制热量可达64 W。

Abstract

To address the limitations of magnetic refrigeration and magnetic heat pump systems near room temperature， this study establishes a one-dimensional numerical model of a cascade active magnetic regenerator and examines the key parameters influencing heating performance. The simulation results indicate that a higher flow rate of the heat transfer fluid accelerates the attainment of a steady-state temperature at the hot end. Furthermore， as the flow rate increases， the no-load temperature span initially increases and then decreases， while the heating capacity increases. Reducing the （de）magnetization time and flow time can significantly enhance both the heating capacity and no-load temperature span， achieving values of up to 55.2 W and 29.9 K， respectively， under a 1-1-1-1 s operating sequence. When the Curie temperature interval of LaFeSiH increases， the no-load temperature span first increases and then decreases， reaching a maximum of 40.2 K at a Curie temperature interval of 6 K. Among the four filling length ratios， the optimal heating performance is achieved at a ratio of 2∶2∶2∶2∶7， resulting in a maximum no-load temperature span of 31.2 K and a maximum heating capacity of 64 W.

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references

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