氢氦二元混合工质脉管制冷机实验研究

Experimental Study on Pulse Tube Refrigerator with Helium-Hydrogen Mixture

】首次采用氢氦二元混合工质在脉管制冷机中进行了实验研究。试验结果表明：在其它运行参数不变的情况下，采用氦氢二元混合工质可以提高脉管制冷机在８０Ｋ温区的制冷量，当氢的摩尔浓度为２０％时，其制冷量比纯质氦提高了约１０％。

The experimental study of pulse tube refrigerator using Helium-Hydrogen mixture has been carried out for the first time. The experimental results show that the cooling capacity of pulse tube refrigerator in 80K temperature region can be increased with Helium-Hydrogen mixture.When the cooling capacity using He-H 2 mixture the mole fraction of hydrogen is 20% in the mixture, is 10% higher than that using pure Helium.