室温磁制冷蓄冷器的传热问题  

A SDTUDY ON THE HEAT CONDUCTIVITY IN THE ACTIVE MAGNETIC REGENERATOR

作　　者：吴海波[1] 卢定伟[1] 徐小农[1] 金新[1] 

机构地区：[1]南京大学物理系,南京210093

出　　处：《低温工程》2003年第6期35-40,共6页Cryogenics

基　　金：国家重点科技项目 (攻关 )计划资助 (专题号为 99-A - 30 - 0 1- 3)

摘　　要：对磁制冷中的关键部件主动式磁蓄冷器 (AMR)的漏热进行了数值计算 ,得到了漏热的组成关系 ,发现沿径向的热传导影响最大。如果能够有效减少AMR与磁体的接触面积或者做好径向外侧的绝热 ,则该系统的漏热问题将显著减少。The heat conductivity of the key unit AMR(active magnetic regenerator)in a room temperature magnetic refrigerator is calculated. The relation of all the heat leak factors is determined The result shows that the heat leak along the radial direction is much more than that along the axial direction. If the face contact between AMR and magnet is reduced and the radial direction is well insulated, the heat leak in the system will be improved greatly

关 键 词：AMR 热传导 主动式磁蓄冷器 制冷工质 巨磁热效应 

分 类 号：TB61[一般工业技术—制冷工程]