回热式机械制冷机的污染机理与控制技术分析  

Analysis of contamination mechanism and control technology of mechanical cryocooler

作　　者：杨宝玉[1] 府华[1] 吴亦农[1] 刘冬毓[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083

出　　处：《低温工程》2005年第6期37-41,共5页Cryogenics

基　　金：国家自然科学基金(50376069)

摘　　要：采用蒙特卡罗方法,对污染气体在制冷机管路复杂的传质扩散过程进行了建模计算,分析了污染气体对制冷机性能的影响机理。结合机理分析和实际经验对高温烘烤除气等一些必要的污染控制措施进行综述,对机械制冷机污染控制技术的系统化、标准化进行了展望。In order to clarify the contamination mechanism, the Monte Carlo method was used to simulate the complicated mass transfer process of gas contamination in the cooler. The performance degradation directly traceable to the gas contamination was analyzed. Subsequently, based on the theoretical study and practical experiences, some control procedures, including vacuum bake out, had been recommended. Furthermore, the systematization and standardization of cryocooler contamination control can be expected.

关 键 词：机械制冷机 污染 蒙特卡罗 传质 回热器 

分 类 号：TB651[一般工业技术—制冷工程]