斯特林型气体制冷机回热器的理论研究

A STUDY ON REGENERATOR THEORY FOR STIRLING CRYOCOOLERS

从熵的角度探索回热器的内部机制,首次给出了焓流损失与熵增之间的定量关系。提出了一种能综合描述回热器中气流换热与流动特性的理论模型,简化和分析求解了回热器基本偏微分方程组,得到了比较符合实际的气流压力、质量流和温度分布。

This paper makes research on internal mechanism of regenerator from the view of entropy. The quantitative relation between the loss and the entropy increase is first derived. A theoretical model is presented which can synthetically describe heat transfer and flow characteristics of gas in regenerator. The basic partial differential equations of regenerator are simplified and solved analytically, the pressure, mass flow and temperature distributions of gas in better agreement with real situation are obtained.