斯特林制冷系数的传热温差敏感性研究  

Sensitivity Study of Stirling Refrigeration Coefficient with Heat Transfer Temperature Difference

作　　者：陈曦[1] 武卫东[1] 赵巍[1] 张华[1] 吴亦农[2] 

机构地区：[1]上海理工大学,上海200093 [2]中科院上海技术物理研究所,上海200083

出　　处：《流体机械》2008年第4期77-79,76,共4页Fluid Machinery

基　　金：上海市重点学科建设项目(T0503);上海高校选拔培养优秀青年教师科研专项基金(563102);上海理工大学博士启动基金(X718)

摘　　要：基于斯特林理想制冷循环，对斯特林制冷机冷热端的传热温差进行无量纲化，分析了传热温差对斯特林制冷系数的影响关系。结果表明传热温差增大制冷系数降低，冷端传热温差对制冷系数的影响较大，在中温区（120—220K），传热温差对制冷系数的影响相对较小。因此斯特林制冷机在中温区具有应用优势。Based Stirling ideal refrigeration cycle, the heat transfer temperature differences in the cold end and heat end of Stirling cooler were dealt with dimensionless method. The influence relations of the heat transfer temperature differences to refrigeration coefficient were detailedly analyzed. The analysis results indicated the refrigeration coefficient would decrease with heat transfer temperature differences increasing, and heat transfer temperature difference of cold end affects refrigeration coefficient much more. The heat transfer temperature differences affect refrigeration coefficient relative less in intermediate temperature area （120K - 220K）, So Stirling coolers have some application advantages in intermediate temperature area.

关 键 词：斯特林制冷机 无量纲 传热温差 制冷系数 

分 类 号：TB6[一般工业技术—制冷工程]