脉冲管制冷机调相机构的研究 第一部分 双向进气模式的研究

Investigation on phase shifters of pulse tube coolersPart 1: Investigation on the double-inlet mode

基于线性热声理论,通过数值计算定量分析了双向进气对脉冲管制冷机性能的影响,指出:在惯性管已经为脉冲管制冷机提供了所需的最佳阻抗时,双向进气不能提高脉冲管制冷机的性能,只有在惯性管没有为制冷机提供作需的最佳阻抗时,双向进气模式才能发挥积极的作用。

Based on linear thermoaeoustie theory, the influence of the double - inlet mode imposed on the pulse tube refrigerator is quantitatively presented by numerical simulation. It is pointed that the double - inlet mode can not improve the performanee of the pulse tube refrigerator if the inertanee tube offers the optimum impedance for the refrigerator. Otherwise the performanee will be deteriorated. A guide line to evaluate an inertanee tube is obtained.