不同倾角的脉管制冷机内自然对流影响的研究  

STUDY OF INFLUENCE OF NATURAL CONVECTION ON THE PERFORMANCE OF PULSE TUBE CRYOCOOLER AT DIFFERENT ORIENTATIONS

作　　者：何雅玲[1] 吴明[1] 陶文铨[1] 陈钟颀[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《工程热物理学报》2002年第3期271-273,共3页Journal of Engineering Thermophysics

基　　金：国家973重点基础研究发展规划资助项目(No.G2000026303);国防科技重点实验室基金资助项目(No.00JS65.4

摘　　要：本文通过对脉管内自然对流的数值模拟，讨论了当脉管冷端处在不同方向时，脉管内的自然对流对脉管制冷机性能的影响．数值模拟结果表明，当冷端在下时获得的制冷温度最低；当热端在下并与重力方向成３０°时制冷温度最高．结论与实验测量结果定性一致．所做的理论分析对实现脉管制冷机的良好运行有指导意义。The effect of the natural convection on pulse tube cryocooler performance was numerically investigated when the pulse tube was positioned at different orientations. It is found that when the cold end was positioned at lower place the temperature of the cold end was the lowest. While when the hot end was positioned at lower place, and the intersection angle between the pulse tube and the gravitation was 30 degrees, the cold end temperature reached its maximum. These numerical findings were agreeable with available test data.

关 键 词：脉管制冷机 自然对流 数值模拟 低温制冷技术 

分 类 号：TB651[一般工业技术—制冷工程]