旋转式室温磁制冷回热器二维多孔介质模型仿真

doi:10.3969/j.issn.1000-1093.2015.05.026

摘要/Abstract

摘要： 在考虑了主动式回热器（AMR）中单元小格内磁热性工质粒径的不同和位置分布随机性的情况下，建立了室温磁制冷机关键零部件——AMR的二维多孔介质模型，并对系统进行数值模拟计算优化。与实验结果对比表明，该模型的计算温度曲线与实验结果温度曲线具有相同的发展趋势，个别区域存在一定的计算误差，但其在可以接受的范围内。通过分析冷却流体流量、AMR转速以及磁场强度对室温磁制冷机性能的影响，结果表明：当换热流体流量增加时，有助于抵消AMR中残留液体对于性能的影响；转速的增加减少了换热流体与磁工质的换热时间，对于制冷机的性能存在不利影响，但是这一影响在冷却流体流量较大时会变小；增加磁场强度有助于减轻残留液体对于制冷量的影响，系统性能也有明显的提升。在考虑了主动式回热器（AMR）中单元小格内磁热性工质粒径的不同和位置分布随机性的情况下，建立了室温磁制冷机关键零部件——AMR的二维多孔介质模型，并对系统进行数值模拟计算优化。与实验结果对比表明，该模型的计算温度曲线与实验结果温度曲线具有相同的发展趋势，个别区域存在一定的计算误差，但其在可以接受的范围内。通过分析冷却流体流量、AMR转速以及磁场强度对室温磁制冷机性能的影响，结果表明：当换热流体流量增加时，有助于抵消AMR中残留液体对于性能的影响；转速的增加减少了换热流体与磁工质的换热时间，对于制冷机的性能存在不利影响，但是这一影响在冷却流体流量较大时会变小；增加磁场强度有助于减轻残留液体对于制冷量的影响，系统性能也有明显的提升。

关键词: 工程热物理, 磁制冷, 多孔介质, 数值模拟

Abstract: A novel two-dimensional porous model of active magnetic regenerator (AMR) is established in consideration of the different grain sizes and random distribution of magneto-caloric materials (MCMs) in the cross-section of AMR lattice. The active magnetic regenerator is numerically simulated. The simulated results are compared with the experimental results. The calculated temperature curve is similar to the experimental temperature curve. In some region, a calculation error exists , which is in a acceptable range. The effects of mass flow rate of heat transfer fluid (HTF), AMR's rotary speed and magnetic field intensity on cooling capacity are investigated. The simulation results show that the increase in the HTF's mass flow rate is helpful to neutralize the unfavorable influence of the residual HTF. With the increase in rotary speed, the heat transfer time between HTF and the MCM shortens, which is harmful to the refrigerator performance. However, this harmful influence can be weaken when the mass flow rate increases. The higher intensity of magnetic field is also useful to reduce the effect of the residual HTF on the cooling capacity.

Key words: engineering thermophysics, magnetic refrigeration, porous media, numerical simulation

中图分类号:

侯普秀，刘超鹏，巫江虹. 旋转式室温磁制冷回热器二维多孔介质模型仿真[J]. 兵工学报, 2015, 36(5): 938-945.

HOU Pu-xiu, LIU Chao-peng, WU Jiang-hong. Numerical Simulation on Porous Rotary Active Magnetic Regenerator in Room Temperature[J]. Acta Armamentarii, 2015, 36(5): 938-945.

参考文献

［1］ Tusek J, Kitanovski A, Prebil I, et al. Dynamic operation of an active magnetic regenerator (AMR): numerical optimization of a packed-bed AMR［J］. International Journal of Refrigeration, 2011, 2011,34(6): 1507-1517.
［2］ Bouchard J, Nesreddine H, Galanis N. Model of a porous regenerator used for magnetic refrigeration at room temperature［J］. International Journal of Heat and Mass Transfer, 2009, 52(5/6):1223-1229.
［3］ Liu M, Yu B F. Numerical investigations on internal temperature distribution and refrigeration performance of reciprocating active magnetic regenerator of room temperature magnetic refrigeration［J］. International Journal of Refrigeration, 2011, 34(3):617-627.
［4］ Li J, Numazawa T, Nakagome H, et al. Numerical modeling on a reciprocating active magnetic regenerator refrigeration in room temperature［J］. Cryogenics, 2011, 51(6):347-352.
［5］ Sarlah A, Kitanovski A, Poredos A, et al. Static and rotating active magnetic regenerators with porous heat exchangers for magnetic cooling［J］. International Journal of Refrigeration, 2006, 29(8): 1332-1339.
［6］ Pecharsky V K, Gschneidner Jr. K A. Giant magnetocaloric effect in Gd5 (Si2Ge2)［J］. Physical Review Letter, 1997, 78(23):4494-4497.
［7］ Yu B F, Liu M, Egolf P W, et al. A review of magnetic refrigerator and heat pump prototypes built before the year 2010［J］. International Journal of Refrigeration-Revue Internationale Du Froid, 2010,33:1029-1060.
［8］ Gatti J M, Vasile Muller C, Brumpter G, et al. Magnetic heat pumps-configurable hydraulic distribution for a magnetic cooling system［C］∥Fifth IIF-IIR International Conference on Magnetic Refrigeration at Room Temperature. Grenoble, France:Grenoble Electrical Engineering Laboratory, 2012: 17-20.
［9］ Cooltech Applications Company. The Magnetic refrigeration system: cooling and heating［EB/OL］. ［2014-07-24］: http:∥www.cooltech-applications.com/magnetic-refrigeration-system.html.
［10］ Rowe A, Tura A. Experimental investigation of a three material layered active magnetic regenerator［J］. International Journal of Refrigeration, 2006, 29(8): 1286-1293.
［11］ Vasile C, Muller C. Innovative design of a magnetocaloric system［J］. International Journal of Refrigeration, 2006,29(8): 1318-1326.
［12］ Zheng Z G, Yu H Y, Zhong X C, et al. Design and performance study of the active magnetic refrigerator for room-temperature application［J］. International Journal of Refrigeration, 2009, 32(1): 78-86.
［13］ Bohigas X, Molins E, Roig A, et al. Room-temperature magnetic refrigerator using permanent magnets［J］. IEEE Transactions on Magnetics, 2000, 36(3): 538-544.
［14］ Shir F, Mavriplis C, Bennett L H, et al. Analysis of room temperature magnetic regenerative refrigeration［J］. International Journal of Refrigeration, 2004, 28(4): 616-627.
［15］ Huang W N, Teng C C. A simple magnetic refrigerator evaluation model［J］. Journal of Magnetism and Magnetic Materials, 2004, 282: 311-316.
［16］ Dankov S Y, Tishin A M, Pecharsky V K, et al. Magnetic phase transitions and the magnetothermal properties of gadolinium［J］. Physical Review B, 1998, 57(6): 3478-3490.
［17］巫江虹，李程，肖飞，等.室温磁制冷机乙醇水溶液传热特性实验研究［J］.兵工学报，2010，31(7):892-895.
WU Jiang-hong, LI Cheng, XIAO Fei, et al. Experimental research on heat-transfer characteristics of ethanol solution at room temperature［J］. Acta Armamentarii, 2010,31(7): 892-895. (in Chinese)

[1]	张锦明，张合，戴可人，蔚达，杨本强. 多孔弹性复合材料研制及其吸能缓冲特性[J]. 兵工学报, 2022, 43(1): 159-168.
[2]	王革，李冬冬，韩万之，张莹. 基于水平集函数的固体火箭发动机瞬态内流场模拟方法研究[J]. 兵工学报, 2017, 38(8): 1520-1531.
[3]	梁志豪, 巫江虹, 金鹏, 李会喜. 电动汽车热泵空调系统结霜特性及除霜策略[J]. 兵工学报, 2017, 38(1): 168-176.
[4]	张世文, 龙建华, 贾宏志, 金山. 平面冲击波在有机玻璃中的衰减测试及数值模拟[J]. 兵工学报, 2016, 37(7): 1214-1219.
[5]	谈梦婷, 张先锋，何勇, 刘闯, 于溪, 郭磊. 长杆弹撞击装甲陶瓷的界面击溃效应数值模拟[J]. 兵工学报, 2016, 37(4): 627-634.
[6]	叶宏，张海涛. 周期性环境条件下围护结构热物性对系统能耗及目标热控效果的影响[J]. 兵工学报, 2015, 36(9): 1710-1721.
[7]	卢进军，李继新，孙阳，陈克新，乔梦华，李文超. 高原环境下某装甲车辆空气滤清器性能仿真分析与试验[J]. 兵工学报, 2015, 36(8): 1556-1561.
[8]	石智成, 刘昊, 张红光, 卢海涛. 基于快速压缩机的二甲醚燃烧特性研究[J]. 兵工学报, 2015, 36(7): 1340-1346.
[9]	赵养正，蒋胜矩，党明利，朱中根. 旋转弹体及减旋片滚转阻尼数值模拟[J]. 兵工学报, 2015, 36(7): 1176-1180.
[10]	巫江虹，李会喜，游少芳. 热泵热水器外盘微通道冷凝器与外盘铜管冷凝器特性比较[J]. 兵工学报, 2015, 36(6): 1147-1152.
[11]	蒋淑园，王浩，阮文俊. 高压弹射装置内弹道二维模型及发射腔内流场特性分析[J]. 兵工学报, 2015, 36(6): 1009-1014.
[12]	赵彬, 张敏弟, 剧冬梅. 基于动网格的两栖车航行姿态数值模拟[J]. 兵工学报, 2015, 36(3): 412-420.
[13]	黄孝龙，许桂阳，翁春生，李宁. 脉冲爆轰发动机爆轰噪声场区域划分及其数值模拟[J]. 兵工学报, 2015, 36(10): 1855-1860.
[14]	刘焜，余永刚，赵娜. 某空气雾化旋流喷嘴在受限空间内雾化特性的实验研究[J]. 兵工学报, 2015, 36(10): 1882-1887.
[15]	孔祥振，方秦，吴昊. 考虑靶体自由表面和开裂区影响的可变形弹体斜侵彻脆性材料的终点弹道分析[J]. 兵工学报, 2014, 35(6): 814-821.