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华南理工大学机械与汽车工程学院 广州 510641
巫江虹,女,教授,华南理工大学机械与汽车工程学院,13580467927,E-mail:pmjhwu@scut.edu.cn。研究方向:室温磁制冷,新能源汽车空调及热管理,热泵节能,人工智能在制冷系统的应用。
收稿:2025-03-29,
修回:2025-04-27,
录用:2025-05-13,
网络出版:2025-11-07,
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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.
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。
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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