| 室温磁制冷主动式磁蓄冷器数值模拟 |
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| 引用本文： | 曾国刚,陈云贵,唐永柏,陈湘,罗辉辉,巫江虹.室温磁制冷主动式磁蓄冷器数值模拟[J].低温与超导,2013,41(2):45-49,61. |
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| 作者姓名： | 曾国刚 陈云贵 唐永柏 陈湘 罗辉辉 巫江虹 |
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| 作者单位： | 1. 四川大学材料科学与工程学院,成都,610064
2. 华南理工大学机械与汽车工程学院,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(51176050) |
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| 摘 要： | 提出了一个研究工作参数、设计参数对主动式磁蓄冷器(AMR)制冷性能影响的数值模型。三个主要参数包括:质量流量m、频率f、蓄冷器孔隙率ε,被用来表征AMR的制冷能力。数值模拟的结果表明:对一个AMR而言,存在一个最佳孔隙率;在某一确定孔隙率条件下,AMR存在最佳换热流体质量流量和最佳工作频率;与高频相比,AMR在较低频率下有更好的制冷性能,一味提高频率并不一定能提高AMR的制冷量。模拟结果对磁制冷样机的设计、工作参数的选择有很大的指导意义。
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| 关 键 词： | 主动式磁蓄冷器(AMR) 数值模拟 制冷量 COP 传热 |
Numerical modeling of a room temperature active magnetic regenerator |
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| Zeng Guogang
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Chen Yungui
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Tang Yongbai
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Chen Xiang
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Luo Huihui
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Wu Jianghong.Numerical modeling of a room temperature active magnetic regenerator[J].Cryogenics and Superconductivity,2013,41(2):45-49,61. |
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| Authors: | Zeng Guogang Chen Yungui Tang Yongbai Chen Xiang Luo Huihui Wu Jianghong |
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| Institution: | 1.College of Material Science and Engineering,Sichuan University,Chengdu 610064,China; 2.School of Mechanical & Automobile,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | In this paper,a numerical model conceived for investigating the influence of the working and design parameters on the cooling performance of an active magnetic regenerator(AMR) was presented.Three main parameters,regenerator porosity ε,mass flow rate m and frequency f,were used to numerically characterize the cooling performance of an AMR.The numerical results indicate that,for an AMR,there exists optimal regenerator porosity and for certain porosity there exist optimal mass flow rate and optimal frequency.The numerical results also indicate that low frequencies always perform better than the high frequencies and the increase of frequency does not always have positive effect on the cooling capacity.The numerical results can be used to guide the magnetic refrigerator prototype design and the choosing of working parameters. |
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| Keywords: | AMR Numerical model Cooling capacity COP Heat transfer |
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