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1.The results computed show that 9 5% of coefficient of performance( COP )AND 6 7% of cooling power at 80 K could be gained,if a mixture pair of 10% nitrogen and 90% helium is used instead of pure helium for the pulse tube refrigeration.
计算结果表明 ,如果用10 %氮与 90 %氦的混合工质对代替纯氦 ,脉管制冷机在 80K温度下的制冷系数和制冷量分别可以提高 9 5%和 6 7%。收藏指正
2.Performance Investigation on Liquid-Helium Temperature Two-Stage Pulse Tube Cryocooler with ～3He/～4He as Working Fluid
采用He3/He4工质液氦温区脉管制冷研究收藏指正
3.For our system, the magnet is immerged in a dewer and the upper surface of the dewer is thermally anchored to the second cold end of a two-stage pulse tube cooler with cooling power of 0.6W at 4.2K. During the cool-down process, helium gas is first liquefied by the pulse tube cooler and filled into the dewer.
本文磁体系统采用再冷凝方式冷却超导磁体，降温时利用脉管制冷机在4.2K具有0.6W的制冷量液化氦气，稳定运行时蒸发的氦气通过杜瓦法兰上的翅片换热液化，以达到系统液氦的零挥发。收藏指正
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