圆柱型活性蓄冷器换热性能的试验研究  

Experimental Study on Heat Transfer Performance of Cylinder Active Magnetic Regenerator

作　　者：王琪 刘斌[1] 李鹏[1] WANG Qi;LIU Bin;LI Peng(Tianjin Key Lab of Refrigeration Technology,Tianjin University of Commerce,Tianjin 300134,China)

机构地区：[1]天津市制冷技术重点实验室,天津商业大学,天津300134

出　　处：《流体机械》2018年第2期74-78,共5页Fluid Machinery

基　　金：天津市科技支撑项目(142CZDNC00016)。

摘　　要：基于磁热效应原理,采用颗粒Gd作为磁工质,水为换热流体,并结合活性蓄冷器的换热特点对往复式室温磁制冷系统的换热性能进行试验分析。试验工况包括:在室温18℃下,基于不同磁场移动速度(40,70,100,130和160 mm/s),研究不同"冷热吹"时间(500,600,700,800和900 ms)对圆柱型活性蓄冷器的换热性能的影响。测量了在不同工况条件下蓄冷器冷热端温度的变化,分析了圆柱型活性蓄冷器换热性能系数。研究表明,当磁场移动速度为160 mm/s时,"冷热吹"时间700ms所对应的冷端最低温度可达到5.2℃,且对应的活性蓄冷器的换热性能系数最大,趋近于0.55。Based on the principle of magnetocaloric effect,the particle Gd was used as the magnetic working fluid and the water was the heat transfer fluid.The heat transfer performance of the reciprocating room temperature magnetic refrigeration system was analyzed experimentally with the heat transfer characteristics of the active magnetic regenerator.Based on different magnetic field moving speeds(40,70,100,130 and 160 mm/s),The effects of different“hot and cold blowing”times(500,600,700,800and 900 ms)on the heat transfer performance of cylindrical active magnetic regenerator were studied.The temperature of the cold and hot end of the regenerator under different working conditions was measured,and the heat transfer performance coefficient of the cylindrical active cold accumulator was analyzed.The results show that when the magnetic field velocity is 160mm/s,“hot and cold blowing”time 700 ms corresponding to the cold end of the minimum temperature can reach 5.2℃,and the corresponding heat storage performance of the corresponding regenerator is the best,approaching 0.55.

关 键 词：磁制冷 活性蓄冷器 换热性能 

分 类 号：TH137[机械工程—机械制造及自动化] TB65[一般工业技术—制冷工程]