Reduction of convective heat losses in pulse tube refrigerators by additional DC flow

机译：通过额外的直流电减少脉冲管制冷机中的对流热损失

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The effectiveness of using an additional DC flow to improve cooling performance by reducing convective heat losses caused by gravity-driven secondary flow in inclined orifice pulse tube refrigerators was studied by visualization of flow and by measurement of gas temperatures at the cold and hot ends of the pulse tube. Results revealed that the gas temperature decreased at the cold end and increased at the hot end by decreasing the secondary flow to an optimal level in the core region. An additional DC flow thereby improved the cooling performance (temperature difference between hot and cold ends) by over 10%.

机译：通过可视化的流动以及在冷端和热端测量气体温度，研究了使用额外的直流电以减少倾斜孔脉冲管制冷机中重力驱动的二次流引起的对流热损失来改善冷却性能的有效性。脉冲管。结果表明，气体温度在冷端降低，而在热端升高，这是因为在芯区将二次流量降低到最佳水平。因此，额外的直流电将冷却性能（冷热端之间的温度差）提高了10％以上。

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《International Cryogenic Engineering Conference(ICEC 20)》|2004年|273-276|共4页
会议地点 Beijing(CN)
作者
Shiraishi M.; Fujisawa Y.; Murakami M.; Nakano A.;
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National Institute of AIST Tsukuba-East Namiki 1-2-1 Tsukuba Ibaraki 305-8564 Japan;

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1. Substantial reduction of the heat losses to ambient air by natural convection from horizontal in-tube flows: impact of an axial bundle of passive baffles [J] . A.Campo, C.Cortes Heat and mass transfer . 2000,第5期

机译：通过水平管内流动的自然对流，大大减少了周围空气的热损失：无源折流板轴向束的冲击
2. Reduction of the effects of asymmetrical convection in tilted pulse-tube refrigerators [J] . Scurlock RG., Beduz C. Cryogenics . 1998,第3期

机译：减少倾斜脉冲管制冷机中不对称对流的影响
3. Numerial Analysis of Heat n Fluid Flow in a Basic Pulse-Tube Refrigerator -Analysis on Het Exchange between the Tube Wall and the Working Gas- [J] . Takao Koshimizu, Hiromi Kubota, Yasuyuki Takata, 低温工学 . 2003,第7期

机译：基本脉冲管式制冷机中热量和流体流动的数值分析-管壁与工作气体之间的热交换分析-
4. Reduction of convective heat losses in pulse tube refrigerators by additional DC flow [C] . M. Shiraishi, Y. Fujisawa, M. Murakami, International Cryogenic Engineering Conference . 2005

机译：通过额外的DC流量减少脉管冰箱中的对流热损失
5. The Effect of Pulsed Flow On the Heat Transfer Coefficient of a Vertical Tube Suspended In a Fast Fluidized Bed. [D] . Curran, Tyler Jon. 2016

机译：脉冲流对悬浮在快速流化床中的垂直管的传热系数的影响。
6. Enhancement of heat transfer and entropy generation analysis of nanofluids turbulent convection flow in square section tubes [O] . Vincenzo Bianco, Sergio Nardini, Oronzio Manca 2011

机译：方形截面管中纳米流体湍流对流的传热增强和熵产生分析
7. Numerical Analysis of Heat and Fluid Flow in a Basic Pulse-Tube Refrigerator-Analysis on Heat Exchange between the Tube Wall and the Working Gas- [O] . Takao KOSHIMIZU, Hiromi KUBOTA, Yasuyuki TAKATA, 2003

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8. Thermodynamic Analysis and Optimization Based on Exergy Flow for a Two- Staged Pulse Tube Refrigerator. [R] . Razani, A., Fraser, T., Dodson, C., 2010

机译：基于（火用）流动的两级脉冲管制冷机热力学分析与优化。

Reduction of convective heat losses in pulse tube refrigerators by additional DC flow

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