| 回热器流阻对脉管制冷机稳定特性的影响 |
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| 引用本文： | 蒋彦龙,陈国邦.回热器流阻对脉管制冷机稳定特性的影响[J].东南大学学报,2005,21(3):277-281. |
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| 作者姓名： | 蒋彦龙 陈国邦 |
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| 作者单位： | [1]南京航空航天大学航空宇航学院,南京210016 [2]浙江大学机械与能源工程学院,杭州310027 |
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| 摘 要： | 基于流体网络理论,研究了通过改变回热器流阻对由双向进气阀诱发的直流流动进行抑制的可行性,计算结果表明,增加回热器流阻可以有效地抑制直流,进而有望提高脉管制冷机在高温区的稳定性能.在此基础上,采用不同的回热器填料布置方式,对脉管制冷机的稳定特性开展实验研究,通过采用直径0.25 mm的铅丸代替回热器冷端(0.3回热器长度)247目不锈钢丝网的方法,实现了制冷机在80 K温区长时间稳定工作.该研究为解决脉管制冷机存在的高温区性能不稳定提供了新的途径.
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| 关 键 词： | 脉管制冷机 流阻 稳定性 |
| 收稿时间： | 12 8 2004 12:00AM |
Influence of regenerator flow resistance on stability of pulse tube cooler |
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| Jiang Yanlong,Chen Guobang.Influence of regenerator flow resistance on stability of pulse tube cooler[J].Journal of Southeast University(English Edition),2005,21(3):277-281. |
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| Authors: | Jiang Yanlong Chen Guobang |
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| Abstract: | Based on the fluid network theory,the possibility of utilizing regenerator flow resistance to suppress the direct current (DC) flow induced by the introduction of a double-inlet in a pulse tube cooler is investigated theoretically. The calculation results show that increasing regenerator flow resistance can lead to a smaller extent of DC flow.Therefore,a better stability performance of the cooler can be realized.On this basis,the stability characteristics of the cooler with various regenerator matrix arrangements are studied by experiments.By replacing 30% space of 247 screens of stainless steel mesh at the cold part of the regenerator by lead balls of 0.25 mm diameter,a long-time stable temperature output at 80 K region is achieved. This achievement provides a new way to obtain stable performance for pulse tube coolers at high temperature and is helpful for its application. |
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| Keywords: | pulse tube cooler flow resistance stability |
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